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Synthesis, structures, spectroscopic and electrochemical studies of Ru(II) complexes containing bis(phosphino)amine ligands. Crystal and molecular structures of trans-[RuCl2{Ph2PN(Me)PPh2-κP,κP}2] and trans-[RuCl2{Ph2PN(iPr)PPh2-κP,κP}2]

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Title Synthesis, structures, spectroscopic and electrochemical studies of Ru(II) complexes containing bis(phosphino)amine ligands. Crystal and molecular structures of trans-[RuCl2{Ph2PN(Me)PPh2-κP,κP}2] and trans-[RuCl2{Ph2PN(iPr)PPh2-κP,κP}2]
 
Creator BALAKRISHNA, MS
PANDA, RASHMISHREE
MAGUE, JOEL T
 
Subject bis(phosphino)amines
octahedral complexes
crystal structure
cyclic voltammetry
 
Description The synthesis, characterization and X-ray crystal study of the monomeric neutral complexes of general formula trans-[RuCl2{Ph2PN(R)PPh2-κP,κP}2] (R = H 1, Me 2, Et 3, nPr 4, iPr 5, nBu 6, Ph 7) is described. The analogous cis complexes, cis-[RuCl2{Ph2PN(R)PPh2-κP,κP}2] (R = H 8, Me 9), have also been synthesized and are characterized. The trans-[RuCl2{Ph2PN(Me)PPh2-κP,κP}2] complex reacts with Ag2SO4 to give a cis neutral complex, [Ru{(SO4)-κO,κO}{Ph2PN(Me)PPh2-κP,κP}2] (10) in good yield. Cyclic voltammograms of the complexes show two one-electron oxidation waves, one being quasi-reversible (RuIII/RuII) and the other chemically irreversible (RuIV/RuIII) with E1/2(RuIII/RuII)cis > E1/2(RuIII/RuII)trans. The more positive (RuIII/RuII) potential for the cis isomer compared to that of trans isomer is consistent with stabilization of the dπ levels in the cis compared to the trans complex.
 
Publisher Elsevier
 
Date 2009-03-20T05:58:25Z
2011-11-25T19:50:23Z
2011-12-26T13:07:40Z
2011-12-27T05:55:42Z
2009-03-20T05:58:25Z
2011-11-25T19:50:23Z
2011-12-26T13:07:40Z
2011-12-27T05:55:42Z
2003
 
Type Article
 
Identifier Polyhedron 22(4), 587-593
0277-5387
http://dx.doi.org/10.1016/S0277-5387(02)01422-5
http://hdl.handle.net/10054/1028
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1028
 
Language en_US