SUSPENSION NMR-SPECTROSCOPY OF PHOSPHINES AND CARBONYLNICKEL COMPLEXES IMMOBILIZED ON SILICA

被引:18
作者
BEHRINGER, KD [1 ]
BLUMEL, J [1 ]
机构
[1] TECH UNIV MUNICH, INST ANORGAN CHEM, D-85747 GARCHING, GERMANY
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1995年 / 50卷 / 11期
关键词
P-31 SUSPENSION NMR SPECTRA; IMMOBILIZED BIFUNCTIONAL PHOSPHINES; IMMOBILIZED CARBONYL-NICKEL PHOSPHINE COMPLEXES; MODIFIED SILICA; P-31 CP/MAS NMR SPECTRA;
D O I
10.1515/znb-1995-1120
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The P-31 suspension NMR spectra of silica-immobilized bifunctional phosphines and their di- and tricarbonylnickel complexes were recorded using conventional high resolution NMR equipment. The practical advantages of suspension NMR spectroscopy, as compared to P-31 CP/MAS NMR spectroscopy, are discussed. General tendencies are demonstrated: The suspension NMR signals become broader with increasing solvent viscosity and decreasing solvent polarity. Phenyl groups as spacers lead to broader resonances than alkyl chains. The linewidths increase in the case of chelation.
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页码:1723 / 1728
页数:6
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