Isolation of two different Ni2Zn complexes with an unprecedented cocrystal formed by one of them and a "coordination positional isomer" of the other

Inorganic Chemistry
Lakshmi Kanta DasAshutosh Ghosh

Abstract

A new homometallic trinuclear Ni(II) complex [(NiL)2Ni(NCS)2] (1) and three heterometallic trinuclear Ni(II)-Zn(II)-Ni(II) complexes [(NiL)2Zn(NCS)2] (2), [(NiL)2Zn(NCS)2(CH3OH)2]·2CH3OH (3) and {[(NiL)2Zn(NCS)2(CH3OH)2]} {[(NiL)2Zn(NCS)2]} (4) have been synthesized by using the "complex as ligand" approach with the "metalloligand" [NiL] (H2L = N,N'-bis(salicylidene)-1,3-propanediamine) and thiocyanate in different ratios. All the complexes have been structurally and magnetically characterized. In the isomorphous complexes 1 and 2, the two terminal square planar Ni atoms and the central octahedral nickel atom (in 1) or zinc atom (in 2) are arranged in a bent structure where two cis κN-SCN(-) thiocyanate ions are coordinated to the central atom. The chemical composition of 3 is very similar to that of 2 but, in 3, the central Zn atom is tetrahedral and the κN-SCN(-) thiocyanate ions occupy an axial position of each terminal nickel atom (which now are octahedral with the sixth position occupied by a methanol molecule). Complex 4 consists of two closely related trinuclear units 4A and 4B. In 4A, the coordination environments of the metals are identical to those of 3 whereas 4B is a "coordination position isomer" of complex 2 with ...Continue Reading

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Aug 4, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Lakshmi Kanta DasAshutosh Ghosh

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Citations

Jan 23, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Alokesh HazariAshutosh Ghosh
Sep 20, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Prithwish MahapatraAshutosh Ghosh
Feb 14, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Prithwish MahapatraAshutosh Ghosh

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