Mono- and bimetallic chromium(III) complexes containing 2,3,5,6-tetrakis-(α-pyridyl)pyrazine as a tridentate ligand:: synthesis and spectroscopic characterization

被引：6

作者：

Bitzer, R

Filgueiras, CAL

Lopes, JGS

Santos, PS

Herbst, MH

机构：

[1] Univ Fed Rio de Janeiro, Inst Quim, Dept Quim Inorgan, BR-21945970 Rio De Janeiro, Brazil

[2] Univ Sao Paulo, Inst Quim, Inst Milenio Mat Complexos, Lab Espectroscopia Mol, BR-05513970 Sao Paulo, Brazil

[3] Univ Fed Rio de Janeiro, Inst Fis, Dept Fis Solidos, BR-21945970 Rio De Janeiro, Brazil

来源：

TRANSITION METAL CHEMISTRY | 2005年 / 30卷 / 05期

关键词：

D O I：

10.1007/s11243-005-6737-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We have investigated the reactions between 2,3,5,6-tetrakis(alpha-pyridyl)pyrazine (TPP) and CrCl3 center dot 6H(2)O in 1:2 and 2.6:1 (Cr-III:TPP) stoichiometric ratios. The resulting products, [Cr(TPP)Cl-3] (1) and [(CrCl3)(2)-mu-TPP] (2), respectively, have been characterized by elemental and thermogravimetric analyses, molar conductivities, vibrational and electronic spectroscopy, and powder e.p.r. spectroscopy at room temperature. In both (1) and (2), TPP behaves as a tridentate ligand. Whereas (1) is a monometallic species with three uncoordinated nitrogen atoms, (2) is bimetallic with TPP as a bridging ligand.

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页码：636 / 642

页数：7

相关论文

共 40 条

[1] ELECTRON-SPIN RESONANCE ON POWDERS OF CHROMIUM(III) COMPLEXES OF TYPE [CR(NH3)5X]Z AND CIS-[CR(NH3)4XY]Z [J].

ANDRIESSEN, WTM ;

MEULDIJK, J .

INORGANIC CHEMISTRY, 1976, 15 (09) :2044-2047

[2] MONOMERIC AND OLIGOMERIC COMPLEXES OF RUTHENIUM AND OSMIUM WITH TETRA-2-PYRIDYL-1,4-PYRAZINE (TPPZ) [J].

ARANA, CR ;

ABRUNA, HD .

INORGANIC CHEMISTRY, 1993, 32 (02) :194-203

[3] 1ST-ROW TRANSITION-METAL COMPLEXES OF THE HEXADENTATE MACROCYCLE 1,4,7-TRIS(5-TERT-BUTYL-2-HYDROXYBENZYL)-1,4,7-TRIAZACYCLONONANE (LH3) - CRYSTAL-STRUCTURES OF [LTI(IV)]BPH4, [LCR(III)], [LFE(III)], AND [(LH)2FE(III)2](CLO4)2.2H2O [J].

AUERBACH, U ;

WEYHERMULLER, T ;

WIEGHARDT, K ;

NUBER, B ;

BILL, E ;

BUTZLAFF, C ;

TRAUTWEIN, AX .

INORGANIC CHEMISTRY, 1993, 32 (05) :508-519

[4] Coupling dirhodium units through terpyridine bridges:: synthesis and structure of a novel molecular rectangle [J].

Bera, JK ;

Campos-Fernández, CS ;

Clerac, R ;

Dunbar, KR .

CHEMICAL COMMUNICATIONS, 2002, (21) :2536-2537

[5] TERNARY CHROMIUM(III) NUCLEOTIDE AMINO-ACID COMPLEXES - L-METHIONINE, L-SERINE AND GLYCINE DERIVATIVES [J].

CALAFAT, AM ;

FIOL, JJ ;

TERRON, A ;

MORENO, V ;

GOODGAME, DML ;

HUSSAIN, I .

INORGANICA CHIMICA ACTA, 1990, 169 (01) :133-139

[6]

Campos-Fernández CS, 2001, ISRAEL J CHEM, V41, P207, DOI 10.1092/YWHR-R8BE-2PLF-7FNN

[7] Crystal structures and magnetic properties of 2,3,5,6-tetrakis(2-pyridyl)pyrazine (tppz)-containing copper(II) complexes [J].

Carranza, J ;

Brennan, C ;

Sletten, J ;

Clemente-Juan, JM ;

Lloret, F ;

Julve, M .

INORGANIC CHEMISTRY, 2003, 42 (26) :8716-8727

[8]

CARRANZA J, 2004, J CHEM SOC DA, P3997

[9] Mixed valence aspects of diruthenium complexes [{(L)ClRu}2(μ-tppz)]n+ incorporating 2-(2-pyridyl)azoles (L) as ancillary functions and 2,3,5,6-tetrakis(2-pyridyl)pyrazine (Tppz) as bis-tridentate bridging ligand [J].

Chanda, N ;

Sarkar, B ;

Kar, S ;

Fiedler, J ;

Kaim, W ;

Lahiri, GK .

INORGANIC CHEMISTRY, 2004, 43 (16) :5128-5133

[10] SYNTHESES OF CHROMIUM AND COPPER-COMPLEXES OF HEXAAZAMACROCYCLES - CRYSTAL-STRUCTURES OF CHROMIUM(III) COMPLEXES OF 1,4,7,10,13,16-HEXAAZACYCLOOCTADECANE AND 1,4,7,11,14,17-HEXAAZACYCLOEICOSANE [J].

CHANDRASEKHAR, S ;

FORTIER, DG ;

MCAULEY, A .

INORGANIC CHEMISTRY, 1993, 32 (08) :1424-1429

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