M. Hvastijova et al., Crystallographic and spectroscopic evidence of O-bonding in 3d-metal dicyanomethanidonitrite complexes, Z NATURFO B, 56(1), 2001, pp. 100-104
Citations number
21
Categorie Soggetti
Chemistry
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
The coordination of the dicyanomethanidonitrite group through the nitroso o
xygen atom in the tetrakis(pyridine) complexes [M{ONC(CN)(2)}(2)(py)(4)]. M
= Ni, Co, Cu, and in the bis(pyridine) complex [Cu{ONC(CN)(2)}(2)(py)(2)]
was proved by X-ray crystallography of the Ni-II complex and re-evaluated i
nfrared spectra. The Ni-II and Co-II complexes exhibit almost octahedral st
ructures composed of four pyridine nitrogen atoms and two oxygen atoms of d
icyanomethanidonitrite ions. Both copper(II) complexes display a considerab
le axial distortion of the pseudooctahedral arrangement. In the bis(pyridin
e) Cu-II complex the ONC(CN)(2) groups are involved in the bridging functio
n by use of the oxygen and nitrile nitrogen atoms.