EFFECTS OF THE MODULATION OF MAGNETIC EXCHANGE INTERACTIONS ON THE ELECTRON-PARAMAGNETIC-RESONANCE SPECTRA OF SOME CARBOXYLATE-BRIDGED OXOVANADIUM(IV) DIMERS

被引：8

作者：

COLLISON, D ^{[1
]}

MABBS, FE ^{[1
]}

TURNER, SS ^{[1
]}

机构：

[1] UNIV MANCHESTER,DEPT CHEM,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 20期

关键词：

D O I：

10.1039/ft9938903705

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The fluid solution EPR spectra of [VO(L)(mu-L1)VO(L)(dmpz)].2C6H5Me (I), [{VO(L)(dmpz)}2(mu-L2)].2MeCN.2H2O (II) and [{VO(L)(dmpz)}2(mu-L3)].1.2C6H5Me (III) [L = hydrotris(3,5-dimethylpyrazolyl)borato, H2L1 = malonic acid, H2L2 = acetylenedicarboxylic acid H2L3 = benzene-1,4-dicarboxylic acid, dmpz = 3,5-dimethypyrazole] in CH2Cl2, CH2Cl2-toluene, CH2Cl2-MeCN and CH2Cl2-MeOH mixtures, at X-band frequency, and over the temperature range 300-240 K are reported. The spectra are consistent with the dimeric formulations wherein there is an exchange interaction with \J\/\A\ > 1. In addition, the spectra exhibit unusual amplitude variations of the lines which are attributed to fluctuations in the exchange interactions.

引用

页码：3705 / 3709

页数：5

共 30 条

[21]

MORE KM, 1981, INORG CHEM, V20, P3356

[22]

MORE KM, 1981, CAN J CHEM, V60, P1392

[23] EVIDENCE FOR SLOW EXCHANGE IN ESR-SPECTRA OF NITROXIDE BIRADICALS [J].

PARMON, VN ;

KOKORIN, AI ;

ZHIDOMIROV, GM ;

ZAMARAEV, KI .

MOLECULAR PHYSICS, 1973, 26 (06) :1565-1569

[24] METAL-NITROXYL INTERACTIONS .21. CONFORMATIONAL EFFECTS ON SPIN-SPIN INTERACTION IN 3 SPIN-LABELED COPPER PORPHYRINS [J].

SAWANT, BM ;

BRADEN, GA ;

SMITH, RE ;

EATON, GR ;

EATON, SS .

INORGANIC CHEMISTRY, 1981, 20 (10) :3349-3354

[25] METAL NITROXYL INTERACTIONS .24. ELECTRON-SPIN DELOCALIZATION IN VANADYL AND COPPER(II) BIS(BETA-DIKETONATES) [J].

SAWANT, BM ;

SHROYER, AL ;

EATON, GR ;

EATON, SS .

INORGANIC CHEMISTRY, 1982, 21 (03) :1093-1101

[26]

SLICHTER CP, 1990, PRINCIPLES MAGNETIC, P193

[27]

SO H, 1987, B KOR CHEM SOC, V8, P384

[28]

SO H, 1987, B KOR CHEM SOC, V8, P111

[29] AN EPR, MAGNETIC AND ELECTROCHEMICAL STUDY OF ELECTRON EXCHANGE AND INTERMETALLIC INTERACTION THROUGH POLYENE BRIDGES [J].

THOMAS, JA ;

JONES, CJ ;

MCCLEVERTY, JA ;

COLLISON, D ;

MABBS, FE ;

HARDING, CJ ;

HUTCHINGS, MG .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (24) :1796-1798

[30] ESR LINEWIDTHS IN SOLUTION .I. EXPERIMENTS ON ANISOTROPIC AND SPIN-ROTATIONAL EFFECTS [J].

WILSON, R ;

KIVELSON, D .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (01) :154-&

← 1 2 3 →