MAGNETIC STUDIES OF 2 NEW COPPER HIPPURATE DIMERS

被引：20

作者：

SHARROCK, P

THIBAUDEAU, CH

CAILLE, A

机构：

[1] UNIV SHERBROOKE,DEPT PHYS,SHERBROOKE J1K 2R1,QUEBEC,CANADA

[2] GRP RECH SEMICOND & DIELECTR,SHERBROOKE J1K 2R1,QUEBEC,CANADA

来源：

INORGANIC CHEMISTRY | 1979年 / 18卷 / 02期

关键词：

D O I：

10.1021/ic50192a068

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The EPR spectra and temperature-dependent magnetic susceptibility of two copper(II)-amino acid complexes have been determined. Results suggest a dimer structure for both the dimethyl sulfoxide and the dimethylformamide adducts of bis(N-benzoylglycinato)copper(II). The temperature variation of the magnetic susceptibility of these compounds shows a broad maximum near 265 K, indicating a strong antiferromagnetic interaction between the Cu2+ ions within the pairs. A superexchange mechanism via the bridging carboxylate groups is compatible with our results and suggests that N-substituted amino acids, or small peptides, can act as simple carboxylate ligands for copper(II), providing model complexes for the EPR-nondetectable copper in enzymes. © 1979, American Chemical Society. All rights reserved.

引用

页码：510 / 512

页数：3

共 29 条

[1] STATISTICAL MECHANICS OF ALTERNANT SPIN WAVES [J].

ABRAHAM, DB .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (09) :3795-+

[2] ONE-ELECTRON REDOX PROCESSES AT BINUCLEAR COPPER CENTERS [J].

ADDISON, AW .

INORGANIC & NUCLEAR CHEMISTRY LETTERS, 1976, 12 (12) :899-903

[3] MAGNETIC PROPERTIES OF POLYNUCLEAR TRANSITION METAL COMPLEXES [J].

BALL, PW .

COORDINATION CHEMISTRY REVIEWS, 1969, 4 (03) :361-&

[4] ANOMALOUS PARAMAGNETISM OF COPPER ACETATE [J].

BLEANEY, B ;

BOWERS, KD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1952, 214 (1119) :451-465

[5] ELECTRON SPIN RESONANCE STUDIES OF DIMER FORMATION BY CHELATES OF COPPER(2) WITH SOME AMINO-ACIDS [J].

BOAS, JF ;

PILBROW, JR ;

SMITH, TD .

JOURNAL OF THE CHEMICAL SOCIETY A -INORGANIC PHYSICAL THEORETICAL, 1969, (05) :723-&

[6] PHYSICAL PARAMETERS AND CRYSTAL STRUCTURE OF A UNIQUE PENTACOORDINATE COPPER(II) HIPPURATE DIMER [J].

BROWN, JN ;

EICHELBE.HR ;

SCHAEFFE.E ;

GOOD, ML ;

TREFONAS, LM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (23) :6290-&

[7] CRYSTAL AND MOLECULAR-STRUCTURE OF A PENTACOORDINATE COPPER(II) HIPPURATE DIMER [J].

BROWN, JN ;

TREFONAS, LM .

INORGANIC CHEMISTRY, 1973, 12 (08) :1730-1733

[8]

CATTERICK J, 1977, ADV INORG CHEM, V20, P291

[9] ELECTRON PARAMAGNETIC RESONANCE SPECTRUM OF BINUCLEAR COPPER BUTYRATE MONOHYDRATE [J].

CHASTEEN, ND .

INORGANIC CHEMISTRY, 1971, 10 (10) :2339-&

[10]

Doedens R.J., 1976, PROG, V21, P209

← 1 2 3 →