A. Escuer et al., Dinuclear nickel(II) complexes with a tridentate nitrito bridge and terminal thiocyanato ligands. Crystal structure and magnetic properties, J CHEM S DA, (17), 1999, pp. 3115-3119
Citations number
19
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
The mu-(eta(1)-N : eta(2)-O,O)-nitrito dinuclear compounds [Ni-2(mu-NO2)(NC
S)(3)(Medpt)(2)]. H2O 1 and [Ni-2(mu-NO2)(NCS)(3)(dpt)(2)] 2, and the monon
uclear nitrito compounds [Ni(NO2)(NCS)(Medpt)] 3 and [Ni(NO2)(NCS)(Medien)]
4, where Medpt = bis(3-aminopropyl)methylamine, dpt = bis(3-aminopropyl)am
ine and Medien = bis(2-aminoethyl)methylamine, have been synthesized and ch
aracterised. The crystal structures of 1-4 have been determined by single-c
rystal X-ray analysis. The thiocyanate ligand appears to stabilise the trid
entate co-ordination mode of the nitrito ligand. The magnetic behaviour of
the dinuclear compounds 1 and 2 was recorded between 300 and 4 K, showing a
ntiferromagnetic coupling in both cases. The magnetic susceptibility data w
ere fitted by the expression for a dinuclear nickel(II) compound giving the
parameters J = -12.8 cm(-1), g = 2.17 and J = -12.2 cm(-1), g = 2.27 for 1
and 2 respectively.