The title compound Cu(C6N4H10)2(NO3)2 crystallizes in space group P1 with a = 9.708(3), b = 5.464(2), c = 9.367(3) A, a = 92.99(3), B= 101.24(3) and y = 108.54(3)°, z = 1, gc = 1.66gm/cm3,µ = 2.05 mm-1. The structure was solved by heavy-atom technique and was refined by least-squares method to R = 0.056. The Cu atom on the centre of inversion displayed a distorted octahedral coordination. © by R. Oldenbourg Verlag, München 1986

A PODDER

J K DATTAGUPTA

N SAHA

A SAHA

Fulltext

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

Zeitschrift fur Kristallographie - New Crystal Structures

The coordination mode of the title ligand, DApPz (synthesized and characterized by mass, IR and PMR spectral parameters), is reported by solid-state isolation and physico-chemical identification of a host of bis complexes of nickel(II) with different counter-ions. Magnetic and electronic spectral features classify the reported species, [Ni(DApPz)2X2]· nH2O, as six-coordinate, pseudo-octahedral with appreciable tetragonal distortion. Vibrational spectral data have indicated a neutral bidentate (NN) function of DApPz through the pyrazolyl (tertiary) ring nitrogen and the aminophenyl nitrogen. In most cases, the counter-ion is coordinated to the nickel(II) ion, but in some cases the water molecules complete the octahedron. X-ray crystallographic studies of [Ni(DApPz)2(H2O)2]Cl2·H2O (monoclinic, P21/n) and [Ni(DApPz)2(NCS)2]·H2O (triclinic, P1) have unambiguously proved the octahedral environment of the nickel(II) ion; the ligand molecules are cis coordinated to the central nickel(II) ion in both cases. A cis configuration of the coordinated water molecules and the counter-ions (NCS) is established on the basis of an OwNiOw angle of 88.3° and an NNCSNiNNCS angle of 94°. © 1992.

Polyhedron

Synthesis and spectroscopic characterization of nickel(II) complexes with 3,5-dimethyl-1-(o-aminophenyl)pyrazole (DApPz): X-ray crystallographic studies of [Ni(DApPz)2(H2O)2]Cl2Â·H2O and [Ni(DApPz)2(NCS)2]Â·H2O

Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry

The crystal and molecular structure of hexapyrazolenickel(II) nitrate, Ni(C3H4N2)6(NO3)2

Crystal structure of bis(3,5-dimethyl-l-guanyl pyrazole) copper(II) nitrate

Journal	Zeitschrift fur Kristallographie - New Crystal Structures
Publisher	-
ISSN	1433-7266
Open Access	No