Coupling of organometallic reaction centers through the non-planar bridging ligand 2,3-bis(2-pyridyl)pyrazine

被引:4
作者
Berger, S
Scheiring, T
Fiedler, J
Kaim, W
机构
[1] Univ Stuttgart, Inst Anorgan Chem, D-70550 Stuttgart, Germany
[2] J Heyrovsky Inst Phys Chem & Electrochem, CR-18223 Prague, Czech Republic
来源
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2004年 / 630卷 / 13-14期
关键词
crystal structure; eletrochemistry; iridium; rhodium; UV/vis-spectroscopy;
D O I
10.1002/zaac.200400133
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The widely used ligand 2,3-bppz = 2,3-bis(2-pyridyl)pyrazine and the complexes [(2,3-bppz){(C5Me5)ClM}(11)](PF6)(n), M = Rh or Ir and n = 1 or 2, were investigated by cyclic voltammetry and UV/VIS-spectroelectrochemistry. For both the mononuclear and, unusually, the dinuclear complexes we observed only chloride-dissociative two-electron reduction processes. One of the precursor complexes, [(2,3-bppz)(C5Me5)ClIr]Cl.2H(2)O, was structurally characterized and found to contain a considerably nonplanar 2,3-bppz ligand.
引用
收藏
页码:2409 / 2417
页数:9
相关论文
共 51 条
[11]   Multistep redox sequences of azopyridyl (L) bridged reaction centres in stable radical complex ions {(μ-L)[MCl(η5-C5Me5)]2}•+, M = Rh or Ir:: spectroelectrochemistry and high-frequency EPR spectroscopy [J].
Frantz, S ;
Reinhardt, R ;
Greulich, S ;
Wanner, M ;
Fiedler, J ;
Duboc-Toia, C ;
Kaim, W .
DALTON TRANSACTIONS, 2003, (17) :3370-3375
[12]  
Glöckle M, 2001, Z ANORG ALLG CHEM, V627, P1441, DOI 10.1002/1521-3749(200107)627:7<1441::AID-ZAAC1441>3.0.CO
[13]  
2-R
[14]   Cp*Ir(dab) (dab=1,4-bis(2,6-dimethylphenyl)-1,4-diazabutadiene): A coordinatively unsaturated six-pi-electron metallaheteroaromatic compound? [J].
Greulich, S ;
Kaim, W ;
Strange, AF ;
Stoll, H ;
Fiedler, J ;
Zalis, S .
INORGANIC CHEMISTRY, 1996, 35 (13) :3998-4002
[15]   Qualitatively different reactivities of hydride reagents toward [(α-diimine)(η5-C5Me5)ClIr]+ cations:: Substitution, electron transfer (reduction), or stepwise hydrogenation [J].
Greulich, S ;
Klein, A ;
Knödler, A ;
Kaim, W .
ORGANOMETALLICS, 2002, 21 (04) :765-769
[16]   Syntheses, crystal structures and magnetic properties of copper(II) polynuclear and dinuclear compounds with 2,3-bis(2-pyridyl)pyrazine (dpp) and pseudohalide as ligands [J].
Grove, H ;
Julve, M ;
Lloret, F ;
Kruger, PE ;
Törnroos, KW ;
Sletten, J .
INORGANICA CHIMICA ACTA, 2001, 325 (1-2) :115-124
[17]   Chains and channels in polynuclear copper(II) complexes with 2,3-bis(2-pyridyl)pyrazine (dpp) as bridging ligand; syntheses, crystal structures and magnetic properties [J].
Grove, H ;
Sletten, J ;
Julve, M ;
Lloret, F ;
Lezama, L .
INORGANICA CHIMICA ACTA, 2000, 310 (02) :217-226
[18]   STRUCTURE OF 2,3-BIS(2-PYRIDYL)PYRAZINE [J].
HUANG, NT ;
PENNINGTON, WT ;
PETERSEN, JD .
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1991, 47 :2011-2012
[19]  
HUHEEY J, 1995, J ELECTROANAL CHEM, P347
[20]  
HUHEEY JE, 1995, ANORGAN CHEM, P347