202289-10-9Relevant articles and documents
Synthesis, structure, spectroscopic properties, electrochemistry, and DFT correlative studies of trans-[Ru(P-P)2Cl2] complexes
Al-Noaimi, Mousa,Warad, Ismail,Abdel-Rahman, Obadah S.,Awwadi, Firas F.,Haddad, Salim F.,Hadda, Taibi B.
, p. 110 - 119 (2013)
Five trans-[Ru(P-P)2Cl2] complexes were prepared by reacting RuCl2(PPh3)3 with P-P ligands {P-P = 3-hexyl-1,3-bis(diphenylphosphino)propane (hdppp) (1); = 1,3- bis(diphenylphosphino)propane (dppp) (2); = 1,2-bis(diphenylphosphino)ethane (dppe) (3); 1.1′-bis(diphenylphosphino)methane (dppm) (4); 1,2-bis(diphenylphosphino)ethylene (depe) (5)}. The complexes were characterized by an elemental analysis, IR, 1H, 13C and 31P{1H}NMR, FAB-MS and TG/DTA. These Ru(II) complexes showed Ru(III)/Ru(II) quasireversible redox couple. The molecular structures of the complexes 1 and 3 were determined by X-ray crystallography, and their spectroscopic properties were studied. Another polymorph of 3 was reported in literature, the reported polymorph of 3 in this work crystallizes in P1 space group, whereas, the previously reported polymorph crystallizes in C2/c space group. The two complexes adopt a distorted trans octahedral coordination and ruthenium(II) ions are located on a crystallographic centre of symmetry. Based on the optimized structures, computational investigations were carried out in order to determine the electronic structures of the complexes. The electronic spectra of 1 and 1+ in dichloromethane were calculated with the use of time-dependent DFT methods, and the electronic spectra of the transitions were correlated with the molecular orbitals of the complexes.
OCTAHEDRAL AND TRIGONAL-BIPYRAMIDAL COMPLEXES OF RUTHENIUM(II) WITH BIDENTATE PHOSPHINE LIGANDS
Briggs, Josie C.,McAuliffe, Charles A.,Dyer, Geoffrey
, p. 423 - 428 (2007/10/02)
Six- and five-co-ordinate complexes of ruthenium(II) with the unsymmetrical diphosphine ligand Ph2P(CH2)3PMe2 have been prepared.Phosphorus-31 n.m.r. spectroscopy indicates that octahedral complexes , , and ClO4 (P-P = diphosphine ligand) have the all-trans arrangement with Me2P trans to Me2P and Ph2P trans to Ph2P.The five-co-ordinate complexes BPh4, where X = Cl or H, are not fluxional at room temperature and have a trigonal-bipyramidal structure with axial PMe2 groups and equatorial PPh2 groups.Similar structures are proposed for analogous complexes of Ph2P(CH2)3PMePh and of Ph2P(CH2)3PPh2.