TY - JOUR
T1 - Binuclear ten-membered ring cyclometallated complexes of digold(I) and their reactions with iodine and bromine
AU - Bennett, Martin A.
AU - Bhargava, Suresh K.
AU - Hockless, David C.R.
AU - Mohr, Fabian
AU - Watts, Kellie
AU - Welling, Lee L.
AU - Willis, Anthony C.
PY - 2004
Y1 - 2004
N2 - The cyclometallated digold(I) complexes [Au2(μ-2-C 6H4CH2PPh2)2] (10) and [Au 2(μ-2-CH2 C6H4PPh 2)2] (11) have been synthesized by the reaction of Li[2-C6H4CH2PPh2] and Li[2-CH 2 C6H4PPh2], respectively, with [AuBr(PEt3)]. 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-C6H 4CH2PPh2)2AuI2] (14a) and [Au(μ-2-CH2C6H4PPh2) 2AuI2] (17), which isomerize to the corresponding salts [Au(κ2-P,C-C6H4CH2PPh 2)2][AuI2] (13a) and [Au(κ2-P, C-CH2 C6H4PPh2)2] [AuI2] (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 [AuBr2(κ2-P, C-C6H4CH 2PPh2)] (15) has been isolated and structurally characterized.
AB - The cyclometallated digold(I) complexes [Au2(μ-2-C 6H4CH2PPh2)2] (10) and [Au 2(μ-2-CH2 C6H4PPh 2)2] (11) have been synthesized by the reaction of Li[2-C6H4CH2PPh2] and Li[2-CH 2 C6H4PPh2], respectively, with [AuBr(PEt3)]. 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-C6H 4CH2PPh2)2AuI2] (14a) and [Au(μ-2-CH2C6H4PPh2) 2AuI2] (17), which isomerize to the corresponding salts [Au(κ2-P,C-C6H4CH2PPh 2)2][AuI2] (13a) and [Au(κ2-P, C-CH2 C6H4PPh2)2] [AuI2] (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 [AuBr2(κ2-P, C-C6H4CH 2PPh2)] (15) has been isolated and structurally characterized.
KW - Cyclometallated Complexes
KW - Goid(I)
KW - Phosphine Complexes
UR - http://www.scopus.com/inward/record.url?scp=12544251998&partnerID=8YFLogxK
U2 - 10.1515/znb-2004-11-1229
DO - 10.1515/znb-2004-11-1229
M3 - Article
SN - 0932-0776
VL - 59
SP - 1563
EP - 1569
JO - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
JF - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
IS - 11-12
ER -