Coordination of bis(azol-1-yl)methane-based bisphosphines towards Ru<sup>II</sup>, Rh<sup>I</sup>, Pd<sup>II</sup> and Pt<sup>II</sup>: synthesis, structural and catalytic studies
作者:Sajad A. Bhat、Madhusudan K. Pandey、Joel T. Mague、Maravanji S. Balakrishna
DOI:10.1039/c6dt04094b
日期:——
modes. Bisphosphine 1 showed a preference for the κ2-P,P mode of coordination, whereas bisphosphines 2 and 3, besides the κ2-P,P mode also showed a head-to-tail κ2-P,N coordination mode resulting in the formation of binuclear complexes [Rh2(COD)2(CH2(1,2-C3H2N2PPh2)2)-κ2P,N}][BF4]2 (14), [Rh2(COD)2(CH2(1,2,4-C2HN3PPh2)2)-κ2P,N}][BF4]2 (15), [Pd2(η3-C3H5)2(CH2(1,2-C3H2N2PPh2)2)-κ2P,N}][BF4]2 (21) and
在双(azol-1-yl)甲烷的五元杂环平台上组装的双膦配体的配位化学。:双(2-二苯基膦基咪唑-1-基)甲烷(1),双(5-二苯基膦基吡唑-1-基)甲烷(2)和双(5-二苯基膦基-1,2,4-三唑-1-基)甲烷(3)描述了Ru II,Rh I,Pd II和Pt II。双膦1–3与元素硒反应,生成相应的双硒烯基衍生物4–6。1–3的反应与过渡金属衍生物产生的络合物具有不同的配位模式。双膦1显示出对κ偏好2 - P,P协调的模式,而双膦2和3中,除了κ 2 - P,P模式也呈头-尾κ 2 - P,Ñ协调模式导致双核络合物的形成[Rh 2(COD)2 (CH 2(1,2-C 3 H 2 N 2 PPh 2)2)-κ 2 P, Ñ }] [BF 4 ] 2( 14),的[Rh 2(COD) 2 (CH 2(1,2,4-C 2 HN 3 PPH 2) 2)-κ 2 P, ñ }] [BF 4 ]