The syntheses and structures of a [2×1+1×2] cocrystal [{Cu IIL1NaI (H2O) 2}{Cu IIL1}2](NO3) (1) and [3×1+5×1] cocrystal [{(CuIIL1) 2KI}(NO3)] · [{(CuIIL 1)3KI 2 (μ-NO3)} (NO3)] · 0.2H2O (2) derived from the hexadentate Schiff base compartmental ligand N, N′-ethylenebis(3- ethoxysalicylaldimine) (H2L1) are described. Compounds 1 and 2 crystallize in triclinic P1 and monoclinic P21/c systems, respectively. The structure of 1 consists of the [CuIIL 1?aI (H2O) 3]+ cation and two mononuclear [CuIIL1] moieties. In the dinuclear [CuIIL1?aI (H2O) 3] + cation, the metal centers are doubly bridged by the two phenolate oxygen atoms. Each of the two coordinated water molecules of the dinuclear unit is encapsulated in the O4 cavities of the two mononuclear [Cu IIL1] moieties resulting in the formation of a [2×1+1×2] cocrystal. In compound 2, one trinuclear double-decker system [{(CuIIL1)2KI}(NO 3)] and one pentanuclear triple-decker system [{(Cu IIL1)3KI 2 (μ-NO 3)}(NO3)] are cocrystallized. Evidently, compound 2 is a [3×1+5×1] cocrystal. Structural resemblance of 3d metal ions with Na(I) and a rare example of double-decker-triple-decker cocrystal are the major outcomes of the present investigation. © 2009 American Chemical Society.

SASANKA MOHANTA

Chemistry

S HAZRA

R KONER

M NAYAK

H A SPARKES

J A K HOWARD

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

Crystal Growth and Design

Syntheses and structures of heterometallic M (V, Cr, Co, Ni, Cu, Zn or W)-tin(II/IV) systems derived from compartmental Schiff bases (salen type) are reviewed. Majority of such compounds were prepared following the metalloligand strategy while recent studies revealed that they can be prepared by self-assembly approach. Traditional approaches, for example, inert atmosphere (under N-2) synthesis resulted mainly addition products while varieties of compounds including multi-components systems such as salts, cocrystals and salt cocrystals were isolated in unfamiliar open atmosphere synthesis. Structural diversity was predominantly observed in latter cases and several noncovalent interactions (O-H center dot center dot center dot O/ O-H center dot center dot center dot Cl/ O-H center dot center dot center dot Br/ N-H center dot center dot center dot O/ N-H center dot center dot center dot Cl/M center dot center dot center dot O/ M center dot center dot center dot Cl/ Sn center dot center dot center dot M/ M center dot center dot center dot pi/ pi center dot center dot center dot pi/ halogen or tetrel bonding) play crucial roles in their solid-state stabilization. Their future prospects in catalysis and biology are also discussed. (C) 2019 Elsevier B.V. All rights reserved.

Coordination Chemistry Reviews

Metal-tin derivatives of compartmental Schiff Bases: Synthesis, structure and application

Syntheses and structures of heterometallic M (V, Cr, Co, Ni, Cu, Zn or W)–tin(II/IV) systems derived from compartmental Schiff bases (salen type) are reviewed. Majority of such compounds were prepared following the metalloligand strategy while recent studies revealed that they can be prepared by self-assembly approach. Traditional approaches, for example, inert atmosphere (under N2) synthesis resulted mainly addition products while varieties of compounds including multi-components systems such as salts, cocrystals and salt cocrystals were isolated in unfamiliar open atmosphere synthesis. Structural diversity was predominantly observed in latter cases and several noncovalent interactions (O–H⋯O/ O–H⋯Cl/ O–H⋯Br/ N–H⋯O/ N–H⋯Cl/ M⋯O/ M⋯Cl/ Sn⋯M/ M⋯π/ π⋯π/ halogen or tetrel bonding) play crucial roles in their solid-state stabilization. Their future prospects in catalysis and biology are also discussed. © 2019 Elsevier B.V.

Metalâ€“tin derivatives of compartmental Schiff Bases: Synthesis, structure and application

The work in this investigation deals with syntheses, crystal structures and ESI-MS positive of five compounds of composition [(Cu II L) 2 Na I ](ClO 4 ) (1), [(Cu II L) 2 K I ](ClO 4 ) (2), [{Cu II L(H 2 O)}Ca II (Cu II L)](ClO 4 ) 2 (3), [(Cu II L)(µ-ClO 4 )Sr II {Cu II L(MeOH) 0.6 }](ClO 4 )·1.2MeOH (4) and [(Cu II L)(µ-ClO 4 )Ba II {Cu II L(MeOH)}](ClO 4 )·MeOH (5), where H 2 L = N,N′-bis(3-ethoxysalicylidene)-1,4-butanediamine. The s-block metal ion in all of these five compounds occupies an O 8 (four phenoxo and four ethoxy) site provided by two L 2− ligands. While Na I , K I and Ca II are eight-coordinated, Sr II and Ba II are nine-coordinated due to additional coordination by an oxygen atom of a bridging perchlorate ligand. In all of 1–5, the two Cu II and M I/II are positioned in almost linear way (Cu II –M I/II –Cu II angle range = 168.24–175.39°). The geometries of the coordination environments have been understood from SHAPE analyses. A disagreement has been observed for the first time between the results of SHAPE analyses and Addison geometric parameter for the pentacoordinated environment. Some interesting structural features regarding composition, metal-ligand bond lengths and twisting of the aromatic rings have been observed. UV-Vis spectra indicates two d-d absorption of copper(II) centers in each of the five compounds. ESI-MS positive reveals the appearance of some tri/di/mononuclear ions. © 2018 Elsevier B.V.

Fulltext

Inorganica Chimica Acta

Linear trinuclear copper(II)-alkali/alkaline earth metal compounds derived from a compartmental ligand

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)

Cocrystallized dinuclear-mononuclear CuII3Na I and double-decker-triple-decker CuII5K I3 complexes derived from N, Nâ€²-ethylenebis(3- ethoxysalicylaldimine)

Journal	Crystal Growth and Design
Publisher	-
ISSN	1528-7483
Open Access	No