New CpCrCl2(PR3) complexes:: physical properties and reduction chemistry

被引：4

作者：

Bender-Gresse, M

Collange, E

Poli, R

Mattamana, S

机构：

[1] Univ Bourgogne, Lab Synthese & Eletrosynthese Organomet, Fac Sci Gabriel, F-21100 Dijon, France

[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

POLYHEDRON | 1998年 / 17卷 / 07期

基金：

美国国家科学基金会;

关键词：

CpCrCl2; reduction chemistry; Curie-Weiss behavior;

D O I：

10.1016/S0277-5387(97)00496-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Compounds CpCrCl2L (L = PMe2Ph, 1; PMePh2, 2; PPh3, 3) have been prepared. Their magnetic moment is in accord with the presence of three unpaired electron and a variable temperature H-1 NMR investigation of 1 shows Curie-Weiss behavior. The H-1 NMR, EPR and UV-visible spectra are in agreement with those of other previously reported compounds of the same family. An electrochemical investigation shows the accessibility of an irreversible reduction process. A parallel sodium reduction investigation of complexes CpCrCl2L (L = PMe3 and eta(1)-dppe) suggests that the reduction process is followed by immediate chloride loss, and then by a ligand redistribution process to afford chromocene and unstable inorganic phosphine complexes of Cr(II). (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

收藏

页码：1115 / 1119

页数：5

相关论文

共 15 条

[1] INSTABILITY OF 15-ELECTRON CP(STAR)MOCL(2)L (L=2-ELECTRON DONOR) DERIVATIVES - X-RAY STRUCTURE OF CP(STAR)MOCL(2)(PME(2)PH)(2) AND [CP(STAR)MOCL(2)(PME(2)PH)(2)]ALCL4 [J].

ABUGIDEIRI, F ;

KEOGH, DW ;

KRAATZ, HB ;

PEARSON, W ;

POLI, R .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1995, 488 (1-2) :29-38

[2] EPR STUDY OF THE TOLUENE SOLUTION PROPERTIES OF THE CHROMIUM(III) ALKYL COMPLEXES [CPCRMECL]2, [CP-ASTERISK-CRRCL]2 (R = ME, ET, CH2SIME3), AND [CP-ASTERISK-CRMEBR]2 - DIMER MONOMER EQUILIBRIA IN SOLUTION [J].

BARRERA, JA ;

WILCOX, DE .

INORGANIC CHEMISTRY, 1992, 31 (10) :1745-1752

[3] Theoretical study of the 15- and 17-electron structures of cyclopentadienylchromium(III) and cyclopentadienylmolybdenum(III) complexes. Dichloride and dimethyl compounds [J].

Cacelli, I ;

Keogh, DW ;

Poli, R ;

Rizzo, A .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (50) :9801-9812

[4]

Cacelli I, 1997, NEW J CHEM, V21, P133

[5] Dissociative phosphine exchange for cyclopentadienylmolybdenum(III) systems. Bridging the gap between Werner-like coordination chemistry and low-valent organometallic chemistry [J].

Cole, AA ;

Fettinger, JC ;

Keogh, DW ;

Poli, R .

INORGANICA CHIMICA ACTA, 1995, 240 (1-2) :355-366

[6] CHEMISTRY OF POLYFUNCTIONAL LIGANDS .59. COMPLEXES OF CHROMIUM(II)-CHLORIDE AND SURFACE CHROMIUM(II) WITH POLYDENTATE P-LIGANDS AND AS-LIGANDS [J].

ELLERMANN, J ;

HAGEN, K ;

KRAUSS, HL .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1982, 487 (04) :130-140

[7] Stable mononuclear, 17-electron molybdenum(III) carbonyl complexes. Synthesis, structure, thermal decomposition, and Cl- addition reactions [J].

Fettinger, JC ;

Keogh, DW ;

Poli, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (15) :3617-3625

[8] Accessibility of 17-electron structures for cyclopentadienylchromium(III) compounds .1. Experimental studies on the dichloride and dimethyl compounds [J].

Fettinger, JC ;

Mattamana, SP ;

Poli, R ;

Rogers, RD .

ORGANOMETALLICS, 1996, 15 (20) :4211-4222

[9] UBER AROMATEN-KOMPLEXE VON METALLEN .66. UBER CYCYLOPENTADIENYL-HALOGEN-KOMPLEXE DES CHROMS [J].

FISCHER, EO ;

ULM, K ;

KUZEL, P .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1963, 319 (5-6) :253-265

[10] ALKYL, HYDRIDE, AND DINITROGEN 1,2-BIS(DIMETHYLPHOSPHINO)ETHANE COMPLEXES OF CHROMIUM - CRYSTAL-STRUCTURES OF CR(CH3)2(DMPE)2, CRH4(DMPE)2, AND CR(N2)2(DMPE)2 [J].

GIROLAMI, GS ;

SALT, JE ;

WILKINSON, G ;

THORNTONPETT, M ;

HURSTHOUSE, MB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (18) :5954-5956