In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 54, No. 9 ( 1999-9-1), p. 1103-1108
Abstract:
Paramagnetic hexaborate clusters with mixed halide, halide/alkyl or halide/hydride substitution were prepared from oxidizable dianionic precursors and were characterized by cyclic voltammetry, EPR, vibrational and UV-VIS spectroscopy. The EPR studies reveal increasing g anisotropy and EPR linewidths on replacing Cl by Br and especially by I substituents; on the other hand, the replacement of one halide by one alkyl (CH 3 or CH 2 CN) or hydride substituent in [B 6 Hal 5 R] ∙- causes decreasing radical persistence and g anisotropy. These results indicate a fairly uniform participation of the cluster core and the substituent sphere in the spin distribution as a major factor for the stability of these non-π radicals.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-1999-0902
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1999
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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