REACTIVITY OF THE 1ST TRANSITION ROW METALLOCENES IN THERMAL-DECOMPOSITION REACTION

被引:65
作者
DYAGILEVA, LM
MARIN, VP
TSYGANOVA, EI
机构
[1] NI LOBACHEVSKII STATE UNIV,CHEM RES INST,GORKI,USSR
[2] ACAD SCI USSR,INST CHEM,GORKI,USSR
关键词
D O I
10.1016/S0022-328X(00)82299-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The thermal decomposition of vanadium, chromium, manganese, iron, cobalt and nickel metallocenes in vacuum has been studied. Kinetic parameters of the process have been calculated. It was established that the thermal stability of the electron-deficient π-complexes of metals to the left of the Periodic System changes in parallel with the thermodynamic functions of the metalring bond dissociation and decreases in the order: Cp2V > Cp2Cr > Cp2Mn. Thermal stability of metallocene analogues of iron-triad, governed more by electronic structure than thermodynamic factors, decreases in the order: Cp2Fe > Cp2Co > Cp2Ni. It has been found that metallocene pyrolysis in a closed system is a homogeneous-heterogeneous process occurring both in a volume and on a surface. The catalytic activity of solid decomposition products has been observed. © 1979.
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页码:63 / 72
页数:10
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