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]

被引：19
作者：
Balakrishna, MS [1 ]
Panda, R
Mague, JT
机构：
[1] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India
[2] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA
来源：
POLYHEDRON | 2003年 / 22卷 / 04期
关键词：
bis(phosphino)amines; ruthenium; octahedral complexes; crystal structures; cyclic voltarnmetry;
D O I：
10.1016/S0277-5387(02)01422-5
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The synthesis, characterization and X-ray crystal study of the monomeric neutral complexes of general formula trans[RuCl2{Ph2PN(R)PPh2-kappaP,kappaP}(2)] (R = H 1, Me 2, Et 3, Pr-n 4, Pr-i 5, Bu-n 6, Ph 7) is described. The analogous cis complexes, cis[RuCl2 {Ph2PN(R)PPh2-kappaP,kappaP}(2)] (R = H 8, Me 9), have also been synthesized and are characterized, The trans [RuCl2{Ph2PN(Me)PPh2-kappaP,kappaP}(2)] complex reacts with Ag2SO4 to give a cis neutral complex, [Ru (SO4)-kappaO,kappaO} {Ph2PN(Me)PPh2-kappaP,kappaP}(2)] (10) in good yield. Cyclic voltammograms of the complexes show two one-electron oxidation waves, one being quasi-reversible (Ru-III/ Ru-II) and the other chemically irreversible (Ru-IV/Ru-III) with E-1/2(Ru-III/Ru-II)(cis) > E-1/2(Ru-III/Ru-II)(trans). The more positive (Ru-III/ Ru-II) potential for the cis isomer compared to that of trans isomer is consistent with stabilization of the dpi levels in the cis compared to the trans complex. (C) 2003 Elsevier Science Ltd. All rights reserved.
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页码：587 / 593
页数：7
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