Stable gold(I) complexes with chelate rings: solution studies of bis(phosphino)ethane complexes and X-ray crystal structure of bis[1,2-bis(diphenylphosphino)ethane]gold(I) hexafluoroantimonate–acetone (1/1)
Stable gold(I) complexes with chelate rings: solution studies of bis(phosphino)ethane complexes and X-ray crystal structure of bis[1,2-bis(diphenylphosphino)ethane]gold(I) hexafluoroantimonate–acetone (1/1)
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具有螯合环的稳定金 (I) 配合物：双(膦基)乙烷配合物的溶液研究和双[1,2-双(二苯基膦)乙烷]金 (I) 六氟锑酸盐-丙酮 (1/1) 的 X 射线晶体结构
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发表时间：
1984
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通讯作者：
P. Sadler
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作者：
S. Berners‐Price;M. Mazid;P. Sadler
1，2-双（二苯基膦基）乙烷（dppe）和1，2-双（二乙基膦基）乙烷（depe）的双螯合四配位金（I）膦配合物在室温下在固态和溶液中均表现出非常高的热力学和动力学稳定性。用电导率和~（31）P核磁共振谱研究了它们在溶液中的形成。滴定。合成并表征了[Au（depe）2]+和[Au（dppe）2]+配合物。这些物质甚至在Au：双（膦）配体比为1：0.75时也存在于溶液中。混合物种[Au（depe）（dppe）]+表现出反式金31 P-31 P核磁共振谱52 Hz的耦合。标题配合物经结晶和X-射线晶体学证实含有金（I），具有扁平的四面体（接近D2 d）配位几何构型（P-Au-P，85-130°），被两个Au-P键长为2.39-2.42的dppe配体螯合。晶体为单斜晶系，空间群P21/n。其中a= 18.685（2），B= 19.414（2），c= 15.096（1）A，β= 91.69（1）°，Z= 4; 4811个反射被细化至R 0.062。
Bis-chelated four-co-ordinate gold(I)–phosphine complexes of 1,2-bis(diphenylphosphino)ethane (dppe) and 1,2-bis(diethylphosphino)ethane (depe) exhibit exceptionally high thermodynamic and kinetic stability both in the solid state and in solution at ambient temperatures. Their formation in solution has been studied by conductivity and 31P n.m.r. titrations. Complexes of [Au(depe)2]+ and [Au(dppe)2]+ have been prepared and characterized. These species exist in solution even at Au : bis(phosphine) ligand ratios of 1 : 0.75. The mixed species [Au(depe)(dppe)]+ exhibited a trans-gold 31P–31P n.m.r. coupling of 52 Hz. The title complex was crystallized and shown by X-ray crystallography to contain gold(I) with a flattened tetrahedral (closely D2d) co-ordination geometry (P–Au–P, 85–130°) chelated by two dppe ligands with Au–P bond lengths of 2.39–2.42 A. Crystals are monoclinic, space group P21/n. with a= 18.685(2), b= 19.414(2), c= 15.096(1)A, β= 91.69(1)°, and Z= 4; 4 811 reflections refined to R 0.062.