The present work reports syntheses, crystal structures and variable-temperature magnetic properties of three copper(II)-iron(II/III) compounds [{CuIIL1}{FeIIIL1(H 2O)2}](ClO4) (1), [{CuIIL 1FeII(H2O)3}{CuIIL 1}2](ClO4)2 (2) and [{Cu IIL2FeII(H2O)3}{Cu IIL2}2](ClO4)2· H2O·CH3COCH3 (3), where H 2L1 = N,N′-ethylenebis(3-ethoxysalicylaldimine) and H2L2 = N,N′-o-phenylenebis(3-ethoxysalicylaldimine). Compounds 2 and 3 are tetrametallic [2 × 1 + 1 × 2] cocrystals of one diphenoxo-bridged dinuclear CuIIFeII and two mononuclear CuII moieties, while compound 1 is a dimetallic [1 × 1 + 1 × 1] cocrystal of one mononuclear FeIII and one mononuclear CuII moieties. The overall topology of 1 is one-dimensional. Tetrametallic (in 2 and 3) and one-dimensional (in 1) self-assemblies are generated due to weak noncovalent interactions. Variable-temperature magnetic susceptibility measurements reveal that iron(II) or iron(III) centers in 1-3 remain in high-spin state. Compounds 2 and 3 exhibit weak antiferromagnetic interaction; the J values in the dinuclear core are -22.5 and -13.7 cm-1, respectively, compound 1 exhibits very weak antiferromagnetic interaction (J = -0.25 cm-1) propagated through the weak noncovalent bonds. © 2011 Elsevier B.V.

SASANKA MOHANTA

Chemistry

A JANA

R KONER

T WEYHERMUELLER

M GHOSH

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Inorganica Chimica Acta

This paper presents the syntheses, crystal structures and electrospray ionization mass spectra (ESI-MS) of four copper(II)–s-block metal ion compounds of composition [{CuIILNaI(H2O)2}(CuIIL)](ClO4) (1), [(CuIIL)2CaII](ClO4)2·2CH3CN·H2O (2), [CuIILSrII(ClO4)2(H2O)]n (3) and [CuIILBaII(ClO4)2(H2O)]n (4), where H2L is the compartmental acyclic Schiff base ligand, obtained on [2 + 1] condensation of 3-ethoxysalicylaldehyde and trans-1,2-diaminocyclohexane. Compound 1 is a [2 × 1 + 1 × 1] cocrystal of one dinuclear [CuIILNaI(H2O)2]+ moiety and one mononuclear [CuIIL] moiety; the reason of cocrystallization is the hydrogen bonding interaction of a coordinated water molecule of the dinuclear unit with the O(phenoxo)2O(ethoxy)2 compartment of the mononuclear unit. [(CuIIL)2CaII](ClO4)2·2CH3CN·H2O (2) is a trinuclear, non-sandwiched compound where the second metal ion (CaII) is situated in between two O(phenoxo)2O(ethoxy)2 compartments of two [CuIIL] moieties. [CuIILSrII(ClO4)2(H2O)]n (3) and [CuIILBaII(ClO4)2(H2O)]n (4) are isomorphous and dinuclear CuIIMII (M = Sr or Ba) based one-dimensional systems, where polymerization takes place through the perchlorate ligands. A number of peaks are observed in the ESI-MS and those are well assigned. Although the compositions of 1, 2 and 3/4 are different, the ESI-MS of all the four compounds reveal the appearance of trinuclear, dinuclear and mononuclear ions. The peculiar/interesting aspects of the four compounds are discussed. © 2017 Elsevier B.V.

Syntheses, crystal structures and ESI-MS of mononuclearâ€“dinuclear, trinuclear and dinuclear based one-dimensional copper(II)â€“s block metal ion complexes derived from a 3-ethoxysalicylaldehydeâ€“diamine ligand

This work presents the syntheses, crystal structures, lone pair functionality and electrospray ionization spectra in positive mode (ESI-MS positive) of two trinuclear CuIIPbIICuIIcompounds [(CuIIL1)2PbII(ClO4)2] (1) and [(CuIIL2)2PbII(NO3)2] (2), one dimer of trinuclear (CuIIPbIICuII)2compound [{(CuIIL2)2PbII}2(μ-adipate)](ClO4)2·2H2O (3) and one trinuclear CuIIPbIICuII–based one-dimensional (1D) compound [(CuIIL2)2PbII(μ1,5-dicyanamide)2]n(4), where H2L1and H2L2are the [2+1] condensation products of salicylaldehyde and, respectively, 1,3-diaminopropane and 2,2'-dimethyl-1,3-diaminopropane. The four compounds have been synthesized by treating the corresponding copper(II) metallo-ligand with a PbIIsalt (for 1 and 2) or with a PbIIsalt and a secondary bridging ligand (adipic acid for 3 and sodium dicyanamide for 4). In the trinuclear CuIIPbIICuIImoiety in all of 1–4, the PbIIcenter resides in between two [CuIIL1]/[CuIIL2] moieties and copper(II) and lead(II) for each of the two CuIIPbIIpairs are diphenoxo bridged. Two trinuclear units are interlinked by an adipate to form the dimeric hexanuclear compound 3. The neighbouring trinuclear units are interlinked by two dicyanamides, forming one-dimensional coordination polymer 4. ESI-MS positive spectra reveal the existence of mono/di/trinuclear and even unusual tetranuclear star type gaseous positive ions; the observed and simulated isotopic distribution patterns are nicely matched. The existence of stereochemically active/inactive lone pair of electrons of lead(II) has been explored. Salient and interesting features in the structures and ESI-MS have been discussed. © 2016 Elsevier B.V.

Syntheses, crystal structures, lone pair functionality and electrospray ionization mass spectral properties of trinuclear, dimer of trinuclear and trinuclear-based one-dimensional systems of copper(II) and lead(II)

The work in this report describes the syntheses and crystal structures of nine copper(II)-silver(I) compounds derived from some single-compartment N(imine)2O(phenoxo)2 or double-compartment N(imine) 2O(phenoxo)2-O(phenoxo)2O(methoxy/ethoxy) 2 acyclic Schiff base ligands. The nine compounds are [{Cu II(ClO4)Lsal-enAgI} 2{CuII(ClO4)Lsal-enAg I(H2O)}]n (1), [CuIIL sal-pnAgI(ClO4)]n (2), [{Cu IILsal-pnAgI(NO3)}2] (3), [(CuIILacpn-en)2AgI(MeCN) 2](ClO4) (4), [{CuIILOMe-enAg I(NO3)}2] (5), [{CuIIL OMe-pnAgI(NO3)}2] (6), [{Cu IILOMe-pnAgI(NO3)} 2]·2H2O (7), [{CuIIL OEt-enAgI(NO3)}2] (8) and [{Cu IILOEt-opAgI(MeOH)}2](ClO 4)2 (9), where the superscripts in the ligand symbols mean the following: (i) sal, acpn, OMe and OEt indicate that the aldehyde counterpart is salicylaldehyde, 2-hydroxyacetophenone, 3-methoxysalicylaldehyde and 3-ethoxysalicylaldehyde, respectively; (ii) en, pn and op indicate that the diamine counterpart is ethylenediamine, 1,3-diaminopropane and o-phenylenediamine, respectively. Copper(II) in all these compounds occupies a N2O2 compartment and the two phenoxo oxygen atoms in all cases bridge one copper(II) and one silver(I) centers. Compound 4 is a trinuclear CuIIAgICuII system. Compounds 3 and 5-9 are dimer-of-dinuclear compounds, in which the dimerization takes place due to interdinuclear Cu-O(nitrate) and Ag⋯Ag interactions in 3, 5 and 6 and due to Ag-π (η1-/η2-) bonds in 7-9. Compounds 2 and 1 are one-dimensional coordination polymers due to Ag-π (η2-)/Ag-π (η3-) bonds. CSD search/analysis reveals some definite significant aspects in both the Ag-π and Ag⋯Ag bonded systems in the present investigation. © 2014 Elsevier B.V. All rights reserved.

Exploration of heterometallic systems containing silver(I) in acyclic Schiff base ligands: Finite and infinite self-assemblies as a result of silver(I)-carbon bond and silver(I)â‹¯silver(I) interaction

The work in this paper deals with five new complexes of composition [Cu II (MeCN)L(U VI O 2 )(NO 3 ) 2 ] MeCN (1), [(Cu II L) 3 Cd II ](ClO 4 ) 2 (2) and [(Cu II L) 2 M II (μ 1,5 -dicyanamide) 2 ] n (M = Co (3), M = Ni (4) and M = Zn (5)) derived from a single-compartment Schiff base ligand H 2 L, which is the [2 + 1] condensation product of salicylaldehyde and 1,4-diaminobutane. Single crystal X-ray structures of all the five complexes have been determined. Compound 1 is a diphenoxo-bridged Cu II (U VI O 2 ) system, compound 2 is a star-shaped tetranuclear system where the cadmium(II) center is encapsulated in between three [Cu II L] moieties and the three isomorphous compounds 3-5 are trinuclear Cu II M II Cu II -based (M = Co, Ni, Zn) two-dimensional, square-grid systems where the trinuclear units are bridged by μ 1,5 -dicyanamide ligands. In addition to the exploration of much less investigated Schiff base ligand family having four carbon atoms between the two imine nitrogen atoms, the types of structures presented here either have some novelties or are new examples and therefore deserves importance. The d-d spectra of copper(II)-diamagnetic metal ion complexes (1, 2 and 5) and the corresponding mononuclear copper(II) compound have been recorded with the aim to shed light on the correlation of d-d band position with the displacement of copper(II) from the least-squares basal plane, revealing excellent correlation. © 2014 Elsevier B.V. All rights reserved.

Dinuclear, star-shaped tetranuclear and trinuclear-based two-dimensional metal complexes derived from a less investigated Schiff base ligand: Syntheses, crystal structures and spectroscopic correlation

With the aim of checking whether the O(phenoxo)2O(methoxy) 2 compartment of 3-methoxysalicylaldehyde-diamine ligands can interact with an aquated proton, the work in this investigation presents the syntheses, characterization, crystal structures and diffuse reflectance spectra of the products obtained from the reactions of three mononuclear copper(II) compounds derived from three H2LOMe ligands (H 2LOMe-en, H2LOMe-op and H 2LOMe-hex) with perchloric acid in DMF, MeOH and MeOH-MeCN, where 'en', 'op' and 'hex' in the superscripts of the ligand symbols indicate that the diamine functionality comes from ethylenediamine, o-phenylenediamine and trans-1,2-diaminocyclohexane, respectively. From these reactions, the following six compounds have been isolated: [{Cu IILOMe-en}(Me2NH2)](ClO 4) (1), [{CuIILOMe-op}(Me2NH 2)](ClO4) (2), [{CuIILOMe-hex} (Me2NH2)](ClO4) (3), [{CuIIL OMe-en}2(enH2)](ClO4)2 (4, where enH2 means diprotonated ethylenediamine), [{Cu IILOMe-op}2(opdaH2)](ClO 4)2·2H2O (5, where opdaH2 means diprotonated o-phenylenediamine) and [{CuIIL OMe-hex}(MeOH2)](ClO4) (6). The Me 2NH2+ moiety in 1-3, NH3+ sites in 4 and 5 and MeOH2+ moiety in 6 interact with the O4 compartment by forming bifurcated hydrogen bonds. Interestingly, compound 6 is an unprecedented type of host-guest system. The individual units in 1-6 are self-assembled by non-covalent interactions to generate one, two and three-dimensional self-assemblies. A spectroscopic correlation has been enlightened. © 2014 Elsevier Masson SAS. All rights reserved.

Polyhedron

Surprising difference between two closely similar O(phenoxo) 2O(ether)2 compartments as hosts for an aquated proton and a novel type of host-guest system

The syntheses, characterization and crystal structures of four copper(ii)/nickel(ii)⋯uranyl(vi) self-assemblies of composition [{Ni IIL1}2·{(UVIO 2)(NO3)2(H2O)2}] (1), [{CuIIL2}2·{(UVIO 2)(NO3)2(H2O)2}] ·0.68H2O (2), [{NiIIL2} 2·{(UVIO2)(NO3) 2(H2O)2}] (3) and [{CuIIL 3}·{(UVIO2)(NO3) 2(H2O)2}]n (4) are described in this investigation (H2L1, H2L2 and H2L3 are the Schiff base ligands obtained on condensing 3-ethoxysalicylaldehyde with ethylenediamine, o-phenylenediamine and trans-1,2-diaminocyclohexane, respectively). Compounds 1 and 4 crystallized in the monoclinic P21/n and C2/c space groups, respectively, while compounds 2 and 3 crystallized in the triclinic space group P1. Two water molecules of the [(UVIO2)(NO3) 2(H2O)2] moiety in 1-4, have a linear H 2O-U-OH2 arrangement. Each of these two water molecules in 1-3 interacts with the O(phenoxo)2O(ethoxy)2 compartment of a mononuclear copper(ii) or nickel(ii) moiety due to the formation of bifurcated hydrogen bonds between each of the two water hydrogen atoms and a pair of one phenoxo and one ethoxy oxygen atoms resulting in the interlinking of the two mononuclear 3d units by the [(UVIO2)(NO 3)2(H2O)2] synthon and therefore these three compounds may be considered as supramolecular dimers. Compounds 1-3 are also two component [1 × 2 + 1 × 1] co-crystals consisting of two mononuclear copper(ii) or nickel(ii) units and one [(UVIO 2)(NO3)2(H2O)2] moiety. On the other hand, in 4, two water molecules, from two different [(U VIO2)(NO3)2(H2O) 2] moieties, interact with one O(phenoxo)2O(ethoxy) 2 compartment resulting in the formation of a self-assembled one-dimensional topology. Again, since one mononuclear copper(ii) unit and one [(UVIO2)(NO3)2(H2O) 2] moiety exist in a single crystal in 4, this compound is a two component [1 × 1 + 1 × 1] co-crystal. The outcomes of the present study utilize [(UVIO2)(NO3)2(H 2O)2] synthon to derive 3d⋯5f co-crystals, provide the first observation of the interaction of two water molecules with one O(phenoxo)2O(ethoxy)2 compartment, demonstrate the formation of supramolecular dimers and show the first example of a one-dimensional self-assembly resulting from water⋯O4 compartment hydrogen bonds, and the first example of [1 × 2 + 1 × 1] co-crystals in 3-ethoxysalicylaldehyde-diamine ligand system. © 2011 The Royal Society of Chemistry.

CrystEngComm

Bis(nitrate)diaquauranyl(vi) synthon to generate [1 Ã— 2 + 1 Ã— 1] and [1 Ã— 1 + 1 Ã— 1] co-crystalized 3dâ‹¯5f self-assemblies

Reaction of [CuIIL⊂(H2O)] (H2L = N,N′-ethylenebis(3-ethoxysalicylaldimine)) with nickel(II) perchlorate in 1:1 ratio in acetone produces the trinuclear compound [(CuIIL) 2NiII(H2O)2](ClO4) 2 (1). On the other hand, on changing the solvent from acetone to methanol, reaction of the same reactants in same ratio produces the pentametallic compound [(CuIIL)2NiII(H 2O)2](ClO4)2·2[Cu IIL⊂(H2O)]·2MeOH (2A), which loses solvated methanol molecules immediately after its isolation to form [(Cu IIL)2NiII(H2O)2](ClO 4)2·2[CuIIL⊂(H2O)] (2B). Clearly, formation of 1 versus 2A and 2B is solvent dependent. Crystal structures of 1 and 2A have been determined. Interestingly, compound 2A is a [3 × 1 + 1 × 2] cocrystal. The cryomagnetic profiles of 1 and 2B indicate that the two pairs of copper(II)···nickel(II) ions in the trinuclear cores in both the complexes are coupled by almost identical moderate antiferromagnetic interaction (J = -22.8 cm-1 for 1 and -26.0 cm-1 for 2B). © 2010 Elsevier B.V. All rights reserved.

Syntheses, crystal structures and magnetic properties of trinuclear and [3 Ã— 1 + 1 Ã— 2] pentanuclear complexes derived from a compartmental ligand: Role of solvent on nuclearity and number of components

Syntheses, characterization and crystal structures of heterotetranuclear [2 × 1 + 1 × 2] co-crystals [{CuIILZnII(H 2O)2}{CuIIL}2](ClO4) 2 (1) and [{CuIILCdII(H2O) 2(CH3CN)}{CuIIL}2](ClO 4)2 (2), dinuclear compound [CuIILHg II(CH2COCH3)](ClO4) (3) and heterotrinuclear [2 × 1 + 1 × 1] co-crystal [{Cu IILAgI(H2O)}{CuIIL}](ClO 4) (4) derived from N,N′-ethylenebis(3-ethoxysalicylaldimine) (H2L) are reported herein. Compounds 3 and 4 crystallize in the orthorhombic Pbca and monoclinic P21/c systems, respectively, while the space group of compounds 1 and 2 is monoclinic C2/c. The structure of 3 consists of a monophenoxo-bridged CuIIHgII dinuclear core in which the mercury(ii) centre is dicoordinated by the bridging phenoxo oxygen atom and the CH2 carbon atom of the mono-deprotonated acetone anion. The coordination environment of HgII in this compound is almost linear. In the CuII2AgI compound 4, one diphenoxo-bridged [CuIILAgI(H2O)]+ cation is co-crystallized with one mononuclear [CuIIL] moieties. On the other hand, the structures of the CuII3MII compounds 1 (M = Zn) and 2 (M = Cd) consist of one diphenoxo-bridged dinuclear CuIIMII unit and two mononuclear [CuIIL] moiety; the composition of the dinuclear unit being [CuIILZn II(H2O)2]2+ and [Cu IILCdII(H2O)2(CH3CN)] 2+ for 1 and 2, respectively. The AgI (in 4), Zn II (in 1) and CdII (in 2) ions in the diphenoxo-bridged dinuclear cores are tri-, tetra- and heptacoordinated, respectively. The metal ions are coordinated to two bridging phenoxo oxygen atoms, with the silver(i) and zinc(ii) centres being additionally coordinated to one and two water molecules, respectively. While in the case of cadmium(ii), the additional five coordination positions are occupied by two ethoxy oxygen atoms, two water oxygen atoms and one acetonitrile nitrogen atom. The coordination environment of silver(i) in 4 is pyramidal with a scalene O3 triangle as the base, whereas those of zinc(ii) and cadmium(ii) in 1 and 2 are distorted tetrahedral and distorted pentagonal bipyramidal, respectively. The coordinated water molecule in 4 and each of the two coordinated water molecules in 1 and 2 are encapsulated into the O4 compartment of a [CuIIL] moiety resulting in the [2 × 1 + 1 × 1] (for 4) or [2 × 1 + 1 × 2] (for 1 and 2) cocrystallization and self-assemblies. Clearly, the encapsulation of the coordinated water molecule(s) is the governing force for the formation of dinuclear-mononuclear co-crystals in 1, 2 and 4. In addition all four compounds 1-4 have π-π stacking interactions which form dimers between pairs of adjacent molecules in the structure of 3 consisting of Cu IIHgII dimers, while one-dimensional stacks are formed in the CuII3ZnII (1), CuII 3CdII (2) and CuII2AgI (4) complexes. The compositions of the title compounds are compared with the related systems derived from the same ligand. The [2 × 1 + 1 × 1] co-crystal, 4, is a new type of system in terms of the number of components. Again, in spite of the tri-, tetra- and hepta-coordinated nature of the second metal ion in the dinuclear cores, co-crystallization in 1, 2 and 4, respectively, are new observations. The accommodation/coordination of varieties of metal ions by the O4 compartment of H2L has also been highlighted in the present investigation. © 2011 The Royal Society of Chemistry.

Syntheses and crystal structures of dinuclear, trinuclear [2 Ã— 1 + 1 Ã— 1] and tetranuclear [2 Ã— 1 + 1 Ã— 2] copper(ii)-d 10 complexes (d10 â‡’ ZnII, CdII, HgII and AgI) derived from N,Nâ€²-ethylenebis(3- ethoxysalicylaldimine)

Syntheses, characterization, and magnetic properties of a series of diphenoxo-bridged discrete dinuclear MIILnIII complexes (M = Cu or Ni, Ln = Ce-Yb) derived from the compartmental Schiff base ligand, H2L, obtained on condensation of 3-ethoxysalicylaldehyde with trans-1,2-diaminocyclohexane, are described. Single crystal X-ray structures of eight CuIILnIII compounds (Ln = Ce (1), Pr (2), Nd (3), Sm (4), Tb (7), Ho (9), Er (10), and Yb (12)) and three NiIILn III (Ln = Ce (13), Sm (16), and Gd (18)) compounds have been determined. Considering the previously reported structure of the Cu IIGdIII (6) compound (Eur. J. Inorg. Chem. 2005, 1500), a total of twelve structures are discussed/compared in this study. Four types of composition are observed in the CuIILnIII complexes: [CuIILLnIII (NO3)3(H2O)] (1-3: Ln = Ce-Nd), [CuIILSmIII(NO3) 3]·CH3COCH3 (4), [CuII(H 2O)LLnIII(NO3)3] (5: Ln = Eu; 6: Ln = Gd), and [CuIILLnIII(NO3)3] (4A: Ln = Sm; 7-12: Ln = Tb-Yb). On the other hand, the NiIILn III complexes are characterized to have two types of composition: [NiIILLnIII(H2O)(NO3)3] (13-15: Ln = Ce-Nd) and [NiIILLnIII(NO3) 3]·0.5CH3COCH3 (16-24: Ln = Sm-Yb). Among twelve X-ray structures, seven belong to three different isomorphous sets (CuIICeIII (1), CuIIPrIII (2), CuIINdIII (3), and NiIICeIII (13); CuIITbIII (7), CuIIHoIII (9), CuIIErIII (10), and CuIIYbIII (12); NiIISmIII (16) and NiIIGdIII (18)), whereas space group/unit cell parameters of two others (CuIISm III (4) and CuIIGdIII (6)) are of different types. The lanthanide(III) centers in CuIICeIII (1), CuIIPrIII (2), CuIINdIII (3), and NiIICeIII (13) complexes are eleven-coordinated, while the lanthanide(III) centers in other compounds are ten-coordinated. As evidenced from the dihedral angle (σ) between the CuO(phenoxo)2 and LnO(phenoxo)2 planes, variation in the extent of planarity of the bridging moiety in the CuIILnIII compounds takes place; the ranges of σ values are 0.8-6.2° in the 4f1-7 analogues and 17.6-19.1° in the 4f8-13 analogues. The Cu IIGdIII (6) compound exhibits ferromagnetic interaction (Eur. J. Inorg. Chem. 2005, 1500). The nature of the magnetic exchange interaction in the CuIILnIII complexes has been understood by utilizing the empirical approach; the NiIILnIII complexes have been used as references. The metal centers in the Eu III complex are uncorrelated, while other 4f1-6 analogues (CeIII, PrIII, NdIII, and SmIII) exhibit antiferromagnetic interaction. Among the higher analogues (4f 7-13), only YbIII exhibits antiferromagnetic interaction, while interaction in other analogues (GdIII, TbIII, DyIII, HoIII, ErIII, and TmIII) is ferromagnetic. An important aspect of the present study is the measurement of the magnetic susceptibility of the unblocked samples as well as on blocking the samples with grease to avoid powder reorientation, if any. Comparison of the two sets of data reveals significant difference in some cases. © 2010 American Chemical Society.

Inorganic Chemistry

Syntheses, structures, and magnetic properties of diphenoxo-bridged Cu IILnIII and NiII(low-spin)LnIII compounds derived from a compartmental ligand (Ln = Ce-Yb)

The synthesis, characterization and structure of a [3 × 1 + 2 × 1 + 1 × 2] cocrystal [(NiIIL1)2Na I(NO3)]·[{NiIIL1Na I(H2O)2}{NiIIL1} 2(NO3)] derived from the hexadentate Schiff base compartmental ligand N,N′-ethylenebis(3-ethoxysalicylaldimine) (H 2L1) are described. The compound crystallizes in the monoclinic system (space group C2/c). The structure consists of one trinuclear double-decker [(NiIIL1)2NaI] + cation, one dinuclear [NiIIL1Na I(H2O)2]+ cation and two mononuclear [NiIIL1] moieties. Each of the two coordinated water molecules of the dinuclear unit is encapsulated in the O4 cavities of the two mononuclear [NiIIL1] moieties resulting in the formation of a tetranuclear self-assembly, which is further interlinked with the trinuclear sandwich species due to Ni⋯Ni interaction to result in an overall one-dimensional topology in the title compound. A unique example of a three component cocrystal of metal complexes, existence of NaI in two entirely different environments in spite of being surrounded by the same blocking ligand and structural resemblance of sodium(i) with 3d metal ions are the major outcomes of the present investigation. © 2010 The Royal Society of Chemistry.

A unique example of a three component cocrystal of metal complexes

Syntheses, crystal structures and magnetic properties of [2 Ã— 1 + 1 Ã— 2] heterotetrametallic and [1 Ã— 1 + 1 Ã— 1] heterodimetallic cocrystals of copper(II) and iron(II/III)

Journal	Inorganica Chimica Acta
Publisher	-
ISSN	0020-1693
Open Access	No