S, X, Q and W band powder-EPR investigations on tetra-n-butylammonium-bis(1,2-dicyanoethylene-1,2-dithiolato)aurate(II), [(n-C4H9)(4)N](2)[Au-II(mnt)(2)]

Authors
Ihlo, L Stosser, R Hofbauer, W Bottcher, R Kirmse, R
Citation
L. Ihlo et al., S, X, Q and W band powder-EPR investigations on tetra-n-butylammonium-bis(1,2-dicyanoethylene-1,2-dithiolato)aurate(II), [(n-C4H9)(4)N](2)[Au-II(mnt)(2)], Z NATURFO B, 54(5), 1999, pp. 597-602
Citations number
32
Categorie Soggetti
Chemistry
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
ISSN journal
09320776 → ACNP
Volume
54
Issue
5
Year of publication
1999
Pages
597 - 602
Database
ISI
SICI code
0932-0776(199905)54:5<597:SXQAWB>2.0.ZU;2-C
Abstract
Powder-EPR studies at T = 295 K and T = 12 K on the unstable gold(II) compl ex [(n-C4H9)(5)N](2)[Au-II(mnt)(2)] diamagnetically diluted by the correspo nding Ni-II complex are reported. Due to (i) the small anisotropy of the g and the Au-197 hyperfine tensor A(Au), and (ii) the large Au-197 quadrupole interaction the powder spectra possess a very complex pattern. Using diffe rent EPR frequencies - S band (2.4 GHz), X band (9.5 GHz), Q band (35 GHz) and W band (94 GHz) - the spectra could be analyzed successfully. All spect ra were simulated with a computer program which diagonalizes the spin-Hamil tonian matrix exactly.