In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 59, No. 11-12 ( 2004-12-01), p. 1563-1569
Abstract:
The cyclometallated digold(I) complexes [Au 2 (μ-2-C 6 H 4 CH 2 PPh 2 ) 2 ] (10) and [Au 2 (μ-2-CH 2 C 6 H 4 PPh 2 ) 2 ] (11) have been synthesized by the reaction of Li[2-C 6 H 4 CH 2 PPh 2 ] and Li[ 2 -CH 2 C 6 H 4 PPh 2 ], respectively, with [AuBr(PEt 3 )]. A single crystal X-ray structure analysis of 10 shows the linearly coordinated gold(I) atoms to be separated by 3.0035(9) Å in a puckered ten-membered ring. Both complexes add one mol equivalent of iodine to form initially gold(I)-gold(III) complexes [Au(μ-2-C 6 H 4 CH 2 PPh 2 ) 2 AuI 2 ] (14a) and [Au(μ-2-CH 2 C 6 H 4 PPh 2 ) 2 AuI 2 ] (17), which isomerize to the corresponding salts [Au(κ 2 -P,C-C 6 H 4 CH 2 PPh 2 ) 2 ][AuI 2 ] (13a) and [Au(κ 2 -P,C-CH 2 C 6 H 4 PPh 2 ) 2 ][AuI 2 ] (16). In 13a the gold(III) cation is planar coordinated by a pair of chelate P-C donor ligands, the phosphorus and carbon atoms being, separately, mutually cis, as shown by X-ray structural analysis. From the reaction of 10 with 2 mol equivalents of bromine, the neutral chelate complex [AuBr 2 (κ 2 -P,C-C 6 H 4 CH 2 PPh 2 )] (15) has been isolated and structurally characterized.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-2004-11-1229
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2004
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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