In:
Australian Journal of Chemistry, CSIRO Publishing, Vol. 43, No. 11 ( 1990), p. 1919-
Abstract:
Bis ( ligand ) complexes of the diimine 3,3′-bipyridazine (L) with bivalent copper, palladium and platinum are described. Green and violet forms of [CuL2] [BF4] 2 were obtained, and the electronic and vibrational spectra suggest coordinated fluoroborate groups in the violet species. In the green complex a tetragonal structure is indicated. Coordination of perchlorate in [PdL2] [ClO4]2 is also indicated but not in [PtL2] [ClO4]2. Structure determination of the latter complex reveals a strictly planar PtN4 moiety, and in fact the whole complex cation is approximately planar. Reduced interligand repulsions, compared to those operative in bis ( ligand ) complexes of 2,2?-bipyridine, are believed to allow the essentially planar conformation. The structure of [PtL2] [ClO4]2 was determined at 295 K by single-crystal X-ray diffraction methods, and was refined to a residual of 0.033 for 1942 'observed' independent reflections. Crystal data: [PtL2] [ClO4]2 monoclinic, space group P21/c (C5/2h, No. 14), a 7.919(2), b 13.086(3), c 10.313(3)Ǻ, β 107.16(2)°.
Type of Medium:
Online Resource
ISSN:
0004-9425
Language:
English
Publisher:
CSIRO Publishing
Publication Date:
1990
