SPECTROSCOPIC CHARACTERIZATION OF TRANS-FE(CO)3L2 COMPLEXES (L = PHOSPHINE OR PHOSPHITE)

被引：0

作者：

INOUE, H

TAKEI, T

HECKMANN, G

FLUCK, E

机构：

[1] MAX PLANCK GESELL,GMELIN INST ANORGAN CHEM & GRENZGEBIETE,VARRENTRAPPSTR 40-42,W-6000 FRANKFURT,GERMANY

[2] KEIO UNIV,DEPT APPL CHEM,YOKOHAMA,KANAGAWA 223,JAPAN

[3] UNIV STUTTGART,INST ANORGAN CHEM,W-7000 STUTTGART 80,GERMANY

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1991年 / 46卷 / 05期

关键词：

BIPHOSPHINETRICARBONYLIRON; BIPHOSPHITETRICARBONYLIRON; IR SPECTRA; P-31 NMR SPECTRA; FE-57 MOSSBAUER SPECTRA;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of disubstituted trans-Fe(CO)3L2 complexes (L = phosphine or phosphite) have been characterized by infrared, Fe-57 Mossbauer, and P-31 NMR spectroscopy. The triple-bond nature of the carbonyl ligands of trans-Fe(CO)3L2 is strengthened with increasing iron-to-phosphorus pi back-donation. A linear correlation between the isomer shifts and the quadrupole splittings has demonstrated that the phosphorus-to-iron sigma donation is offset by the iron-to-phosphorus pi back-donation. The linear dependence of the coordination shifts on the isomer shifts has revealed that the iron-to-phosphorus pi back-donation plays an important role in the Fe-P bond. There exists a strong interaction between trans phosphorus ligands through the d-pi orbitals associated with the P-Fe-P bond.

引用

页码：682 / 686

页数：5

共 50 条

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