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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >The Influence of Substituents at C-2 Carbon of Thiosemicarbazones on the Bonding Pattern of Bis(diphenylphopshano)alkanes in Palladium(II) Complexes
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The Influence of Substituents at C-2 Carbon of Thiosemicarbazones on the Bonding Pattern of Bis(diphenylphopshano)alkanes in Palladium(II) Complexes

机译:硫代半氨基甲酮的C-2碳上的取代基对钯(II)配合物中双(二苯基磷山)烷烃键合模式的影响

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摘要

Reactions of trans-PdCl2(PPh3)(2) with acetone thiosemicarbazone (Hactsc) and benzaldehyde thiosemicarbazone (Hbtsc) in a 1:1 molar ratio in the presence of Et3N yielded the neutral complexes [Pd(eta(2)-N-3,S-actsc)(PPh3)Cl] (1) and [Pd(eta(2)-N-3,S-btsc)(PPh3)Cl] (2) respectively. In contrast, reactions of cis-PdCl2(dppe) (dppe = bis(diphenylphosphanyl)ethane) and cis-PdCl2(dppp) (dppp = bis(diphenylphosphanyl)propane) with Hbtsc gave the ionic complexes [Pd(eta(2)-N-2,S-btsc)(eta(2)-dppe)]Cl (3) and [Pd(eta(2)-N-3,S-btsc)(eta(2)-dppp)]Cl (4) because of the chelation effect. The reaction of salicylaldehyde thiosemicarbazone (H(2)stsc) with cis-PdCl2(dppm) (dppm = bis(diphenylphosphanyl)methane)- and cis-PdCl2(dppp) yielded the dinuclear complexes [Pd-2(eta(3)-O,N-3,S-stsc)(2)(mu-dppm)] (5) and [Pd-2(eta(3)-O,N-3,S-stsc)(2)(mu-dppp)] (6). Complexes 1-6 were characterized with spectroscopic techniques [IR, H-1, P-31{H-1} NMR], and single-crystal X-ray crystallography The ligands are negative bidentate in complexes 1-4 and di-negative tridentate (O, N-3, S) in complexes 5 and 6. Diphosphanes exhibited both chelating (eta(2); 3, 4) as well as bridging (mu; 5, 6) modes.
机译:在Et3N存在下,摩尔比为1:1的反式PdCl2(PPh3)(2)与丙酮硫代半碳carb(Hactsc)和苯甲醛硫代半碳((Hbtsc)的反应生成中性络合物[Pd(eta(2)-N-3 ,[S-actsc](PPh3)Cl](1)和[Pd(eta(2)-N-3,S-btsc)(PPh3)Cl](2)。相反,顺式PdCl2(dppe)(dppe =双(二苯基膦烷基)乙烷)和顺式-PdCl2(dppp)(dppp =双(二苯基膦基)丙烷)与Hbtsc的反应生成了离子络合物[Pd(eta(2)- N-2,S-btsc)(eta(2)-dppe)] Cl(3)和[Pd(eta(2)-N-3,S-btsc)(eta(2)-dppp)] Cl(4 ),因为有螯合作用。水杨醛硫半碳酮(H(2)stsc)与顺式PdCl2(dppm)(dppm =双(二苯基膦基)甲烷)-和顺式PdCl2(dppp)的反应产生了双核络合物[Pd-2(eta(3)- O,N-3,S-stsc)(2)(mu-dppm)](5)和[Pd-2(eta(3)-O,N-3,S-stsc)(2)(mu-dppp )](6)。配合物1-6用光谱技术[IR,H-1,P-31 {H-1} NMR]和单晶X射线晶体学表征。配合物在配合物1-4中为负二齿,二齿为三负(O,N-3,S)在配合物5和6中。二膦烷既具有螯合(eta(2); 3,4)模式,又具有桥接(μ; 5,6)模式。

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