A new class of binucleating tetratertiaryphosphine ligands. The synthesis and crystallographic characterization of the chiral diastereomer of a rhodium(I) dimer: Rh2Cl2(CO)2(eLTTP) (eLTTP = (Et2PCH2CH2)(Ph)PCH2P(Ph)(CH2CH2PEt2))
Separating the Racemic and Meso Diastereomers of a Binucleating Tetraphosphine Ligand System through the Use of Nickel Chloride
作者:David A. Aubry、Scott A. Laneman、Frank R. Fronczek、George G. Stanley
DOI:10.1021/ic010035f
日期:2001.9.1
allowing facile isolation of each bimetallic complex. Subsequent reaction with more than 250 equiv of NaCN in H(2)O/MeOH releases the et,ph-P4 ligand and [Ni(CN)(4)](2-). The rac,trans- and meso,trans-Ni(CN)(2)(eta(2.5)-et,ph-P4) form as intermediates in the cyanolysis of rac- and meso-Ni(2)Cl(4)(et,ph-P4). These have been characterized by X-ray crystallography. The unusual partial isomerization of the
The facile reaction of water with a bimetallic nickel tetrachloride tetraphosphine: A tale of two chelates
作者:William J. Schreiter、Alexandre R. Monteil、Ryan A. Johnson、Ciera D. Gasery、Ekaterina Kalachnikova、Ranelka G. Fernando、Frank R. Fronczek、George G. Stanley
DOI:10.1016/j.poly.2019.02.018
日期:2019.5
meso-Ni2Cl4(P4-Ph) complexes based on the much stronger chelating tetraphosphine ligand with 1,2-phenylene chelate rings also react readily with water to form a hydroxide-bridged bimetallic complex, but further reaction and fragmentation chemistry is inhibited by the much stronger chelate effect present. [Ni2(μ-OH)Cl2(meso-P4-Ph)]+ has been crystallographically and spectroscopically characterized along with some