Synthesis and Spectroscopy of Mononuclear and Dinuclear Copper-Complexes of a Pyrazolylcyclotriphosphazene - Crystal-Structure of an Unusual Cyclotriphosphazene-Bridged Dicopper Complex
by Thomas, K. R. J.; Chandrasekhar, V.; Scott, S. R.; Hallford, R.; Cordes, A. W.
The mononuclear copper(II) complexes [CuL(ClO4)(H2O)2]ClO4 and [CuL(bipy)(ClO4)]ClO4 [L = 2,2,4,4,6,6-hexakis(3,5-dimethylpyrazolyl)-2lambda5,4lambda5,6lambda5-cyclotriphosphaza-1,3,5-triene] have been prepared and characterized by optical, EPR and IR spectral data. The crystal structure of an unusual cyclophosphazene-bridged dicopper complex [H2dmpz][(CuCl2)2{N3P3O(dmpz)5}] (Hdmpz = 3,5-dimethylpyrazole) has been determined: space group P1bAR, a = 11.640(3), b = 14.497(14). c = 14.775(3), alpha = 77.62(6), beta = 82.10(2), gamma = 74.88(6)degrees, and Z = 2. The geometry around both copper atoms is a distorted trigonal bipyramidal with the axial positions occupied by pyrazolyl pyridinic nitrogens and the equatorial positions by one cyclophosphazene ring nitrogen and two chlorine atoms.
- Journal
- Journal of the Chemical Society-Dalton Transactions
- Issue
- 17
- Year
- 1993
- Start Page
- 2589-2594
- URL
- https://dx.doi.org/10.1039/dt9930002589
- ISBN/ISSN
- 1364-5447
- DOI
- 10.1039/dt9930002589