Synthesis and crystal structure of thiocyanato or azido bridged one- or two-dimensional polymeric complexes of cadmium(II)

Citation
N. Mondal et al., Synthesis and crystal structure of thiocyanato or azido bridged one- or two-dimensional polymeric complexes of cadmium(II), J CHEM S DA, (18), 2000, pp. 3218-3221
Citations number
32
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
ISSN journal
1470479X → ACNP
Issue
18
Year of publication
2000
Pages
3218 - 3221
Database
ISI
SICI code
1470-479X(2000):18<3218:SACSOT>2.0.ZU;2-K
Abstract
Four new polymeric complexes [Cd(dmen)(SCN)(2)](n) 1, [Cd(deen)(SCN)(2)](n) 2, [Cd(dmen)(N-3)(2)](n) 3 and [Cd(deen)(N-3)(2)](n) 4 (dmen=N,N-dimethyle thylenediamine and deen=N,N-diethylethylenediamine) have been synthesized a nd characterized by single crystal X-ray diffraction. The various arrangeme nts of thiocyanate anions give a 2-D polynuclear chain of pseudo sixteen me mbered rings for 1 and a 1-D polynuclear chain of eight membered rings for 2. The 2-D polymeric sheets of complexes 3 and 4 involve the formation of t wo different rings, one a twenty membered zigzag ring and the other a four membered square ring. The co-ordination environment of the cadmium atom in all the complexes is distorted octahedral. In the azido-bridged complexes t he cadmium(II) ions are linked both by end-on and end-to-end co-ordination, whereas in the thiocyanato-bridged complexes the cadmium(II) ions are brid ged only by end-to-end co-ordination.