作者:Igor O. Koshevoy、Yi-Chih Lin、Antti J. Karttunen、Pi-Tai Chou、Pirjo Vainiotalo、Sergey P. Tunik、Matti Haukka、Tapani A. Pakkanen
DOI:10.1021/ic801987t
日期:2009.3.2
The reactions between the diphosphino−alkynyl goldcomplexes (XC6H4C2Au)PR2−C6H4−PR2(AuC2C6H4X) with Cu+ lead to the formation of a family of heterometallic clusters of the general formula [Au3Cu2(C2C6H4X)6}Au3(PR2C6H4PR2)3][PF6]2 (X = NO2, H, OMe, NMe2; R = C6H5, NC4H4). These complexes adopt the same structural pattern and consist of a heterometallic alkynyl cluster [Au3Cu2(C2C6H4X)6]− “wrapped”
二膦基炔基金络合物(XC 6 H 4 C 2 Au)PR 2 -C 6 H 4 -PR 2(AuC 2 C 6 H 4 X)与Cu +之间的反应导致形成杂金属簇族[Au 3 Cu 2(C 2 C 6 H 4 X)6 } Au 3(PR 2 C 6 H 4 PR 2)3的通式] [PF 6] 2(X = NO 2,H,OMe,NMe 2; R = C 6 H 5,NC 4 H 4)。这些配合物采用相同的结构模式,并由杂金属炔基簇[Au 3 Cu 2(C 2 C 6 H 4 X)6 ] -包裹着阳离子[Au 3(PR 2 C 6 H 4 PR 2)” 3 ] 3+“腰带”。通过NMR光谱和ESI-MS测量来表征新化合物。对它们的发光特性的系统研究表明,在溶液中有效的室温磷光具有明显弱的分子氧猝灭作用。光物理实验表明,炔基配体的电子给体能力的提高和二膦的吸电子特性导致发射最大值的红移(在576-686
Synthesis, Structural Characterization and Luminescence Studies of Di- and Trinuclear Gold(I) Alkynyl-phosphine Complexes
作者:Igor O. Koshevoy、Laura Koskinen、Ekaterina S. Smirnova、Matti Haukka、Tapani A. Pakkanen、Alexei S. Melnikov、Sergey P. Tunik
DOI:10.1002/zaac.200900503
日期:2010.4
the diphosphine complexes 1-4 display dual emission corresponding to ligand centered transitions (lambda(em) = 360-375 nm) along with weaker contribution from MLCT excited states at ca 490 nm The long wavelength component of the emission plays a dominant role in the solid state luminescence spectra of complexes 1, 3 and 4 (460, 544, 520 nm, respectively) whereas the triphosphine complex 2 shows dual luminescence
addition, mononuclear complexes [(AuC≡CR′)(Im-R2)], where Im-R2= N,N′-dimethylimidazol-2-ylidene and R′ = SiMe3 or Im-R2 = N,N′-dibenzylimidazol-2-ylidene and R′ = tBu, have been prepared by method 2 or 3, respectively. A dinuclearcomplexcontaining two AuCl units connected by an acyclic dicarbene ligand results from the attack of N,N′-diethylpropylenediamine to the isocyanide ligand of [AuCl(CNtBu)].
Reactions of Gold(I) Acetylides with 1,1′-Diisocyanoferrocene: From Orthodox to Unorthodox Behavior
作者:Ulrich Siemeling、Dag Rother、Clemens Bruhn
DOI:10.1021/om8005992
日期:2008.12.22
1,1′-Diisocyanoferrocene (1) reacts with the gold(I) acetylides [Au(C≡C-p-C6H4R)]n (2a R = CF3, 2b R = H, 2c R = OMe, 2d R = NMe2) to afford the respective dinuclear gold complexes [Au(C≡C-p-C6H4R)}2(μ-1)] (3), whose aurophilic aggregation in the solid state depends on the nature of the substituent R. The product of the reaction of 1 with [Au(C≡C-Fc)]n (2e, Fc = ferrocenyl) is the hexanuclear gold
1,1'- Diisocyanoferrocene(1)反应使用金(I)乙炔化物[AU(C≡C- p -C 6 H ^ 4 R)] Ñ(2A R = CF 3,2b中R = H,2c中R = OME ,2d R = NMe 2)得到相应的双核金络合物[Au(C≡C- p -C 6 H 4 R)} 2(μ- 1)](3),其固态的嗜酸性聚集取决于1与[Au(C≡C-Fc)] n的反应产物(2E,FC =二茂铁)是六核金簇[(FC-C≡C-Au的C≡NC 5 ħ 4)的Fe C 5 ħ 4 -N = C(Au)的-C≡C-Fc的}]图3由三个亚单元4组成,并显示出不寻常的金原子排列。(4)3的形成基于两个化学等效的1官能团与2e的不同特异性反应,即配位和1,1-插入。这种“类精神”行为显然是诱导的反应不对称性的新变体,并在化学中构成了新现象。2e的反应用1,1'-双(二苯基膦烷基)二茂铁(
Some insights into the gold-catalysed A 3 -coupling reaction
作者:Gregory A. Price、Alan K. Brisdon、Simon Randall、Edward Lewis、Daniel M. Whittaker、Robin G. Pritchard、Chris A. Muryn、Kevin R. Flower、Peter Quayle
DOI:10.1016/j.jorganchem.2017.06.019
日期:2017.10
application to A3-coupling reactions is presented. Gold(III) complexes were found to be particularly effective catalysts for the coupling in a range of solvents, however no asymmetric induction was obtained when using chiral gold complexes and the rate of product formation was found to be similar even when using different ligand systems. In-situ NMR analysis of these reactions indicates that decomposition