ORBITAL SYMMETRY CONTROL AND G-FACTOR ANISOTROPY IN A LOW-SPIN MACROCYCLIC COBALT(II) COMPLEX

被引：17

作者：

CEULEMANS, A ^{[1
]}

DEBUYST, R ^{[1
]}

DEJEHET, F ^{[1
]}

KING, GSD ^{[1
]}

VANHECKE, M ^{[1
]}

VANQUICKENBORNE, LG ^{[1
]}

机构：

[1] CATHOLIC UNIV LOUVAIN,CHIM INORGAN & NUCL LAB,B-1348 LOUVAIN LA NEUVE,BELGIUM

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 01期

关键词：

D O I：

10.1021/j100364a016

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 single-crystal EPR spectrum of the tetraimine macrocyclic Co(II) complex [Co(C10H20N8)]Cl2, diluted in the analogous Ni(II) complex, and the crystal structure of the host have been determined. [Ni(C10H20N8)]Cl2 crystallizes in the space group P1, with a = 7.523 (2) Å, b = 9.502 (2) Å, c = 11.447 (4) Å, α = 95.82 (2)°, β = 108.01 (2)°, γ = 98.62 (3)°, and Z = 2. The EPR spectrum is anisotropic with gx = 2.217, gy = 2.681, gz = 1.966 and Ax = 44, Ay = 105, Az = 115 G. Superhyperfine interactions with one axial chlorine nucleus are observed along the z-direction. The spatial orientation of the molecular g tensor in this complex is controlled by orbital symmetry. The observed orientational selectivity is reminiscent of the stereochemical selection rules for carbocyclic reactions. © 1990 American Chemical Society.

引用

页码：105 / 113

页数：9

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