Synthesis of α,ω-bis(diphenylphosphino)alkane and α,ω-bis(diphenylphosphino)(poly)ether ligands and complexes of rhodium(I)
作者:D.Harry M.W. Thewissen、Klaas Timmer、Jan G. Noltes、Jan W. Marsman、Richard M. Laine
DOI:10.1016/s0020-1693(00)86576-7
日期:1985.2
α,ω-Bis(diphenylphosphino)alkane and α,ω-bis(diphenylphosphino)(poly)ether ligands can be prepared in very high yields via reaction of the appropriate dihalide with two equivalents of LiPPh2. For the [Rh(COD)(P P)][ClO4] complexes of these ligands, the P P ligands with five or less atoms in the alkane or ether bridge form monomeric complexes via η2-coordination. In general the ligands with eight or
sp Carbon Chains Surrounded by sp3 Carbon Double Helices: A Class of Molecules that are Accessible by Self-Assembly and Models for “Insulated” Molecular-Scale Devices We thank the Deutsche Forschungsgemeinschaft (SFB 583), Johnson Matthey PMC (platinum loan), the Spanish Ministerio de Educación y Ciencia, and the Fulbright Commission (Fellowships, J.M.M.-A.) for support, and Dr. A. M. Arif for assistance with the analysis of one crystal structure.
作者:Jürgen Stahl、James C. Bohling、Eike B. Bauer、Thomas B. Peters、Wolfgang Mohr、José M. Martín-Alvarez、Frank Hampel、John A. Gladysz
Syntheses and Structures of Diplatinum Hexatriynediyl Complexes, in Which the sp Carbon Chains Are Shielded by sp<sup>3</sup> Carbon Chains
作者:Gareth R. Owen、Jürgen Stahl、Frank Hampel、J. A. Gladysz
DOI:10.1021/om0493558
日期:2004.12.1
When trans, trans-(C6F5)(p-tol(3)P)(2)Pt(Cequivalent toC(3))Pt-(P-p-tol(3))(2)(C6F5) and Ar2P(CH2)(m)PAr2 (m /Ar = 8 / p-tol, 10/ Ph, 11 / Ph, 12 / Ph, 14 / p-tol) are reacted, P-tol(3)P is displaced to give products in which the diphosphines span the platinum end groups. One crystal structure (m = 14) shows a double-helical conformation in which the sp(3) carbon chains twist around the sp chain, and others (m = 10, 11) show nonhelical conformations with lateral shielding of the sp chain.
Factors influencing the formation of cis and trans isomers in long-chain bis(phosphine) complexes of platinum(II)
作者:William E. Hill、David M. A. Minahan、John G. Taylor、Charles A. McAuliffe