Structural Research of the Cluster Compounds of W2Cl4(OR)4(ROH)2 by EXAFS

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (12): 1651.

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Structural Research of the Cluster Compounds of W₂Cl₄(OR)₄(ROH)₂ by EXAFS

DUAN Yong-Heng, JIN Song-Lin, HONG Bo, MA Li-Dun

Centre for Analysis and Measurement, Chemistry Department, Fudan University, Shanghai, 200433

Received:1993-04-14 Revised:1993-07-25 Online:1993-12-24 Published:1993-12-24

Abstract

Abstract: Five cluster compounds of double tungsten nucleus W₂Cl₄(OR)₄(ROH)₂ have been investigated by EXAFSin which R- is Pr-, n-Bu, i-Bu, sec-Bu and n-Oct respcctivily.An in-lab EXAFSspectrometer-FXASwas used to collect the data of W LIedges.The backscattering amplitudes and the phase shifts of W, Cl and Oatoms were obtained from the standard W₂Cl₄(OCH₃)₄(CH₃OH)₂. The structural parameters of the clusters from the curve fitting are listed.The conclusion is that the structures of cluster nucleus of the five compounds do not obviously change with the change of the size and the structure of the group--ORin the compounds.The structural stability results from the double bond and two bridge oxygen bonds between the two tungsten atoms.

Key words: Binucleus clusters of tungsten, EXAFS, Structure

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DUAN Yong-Heng, JIN Song-Lin, HONG Bo, MA Li-Dun . Structural Research of the Cluster Compounds of W₂Cl₄(OR)₄(ROH)₂ by EXAFS[J]. Chem. J. Chinese Universities, 1993, 14(12): 1651.

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Structural Research of the Cluster Compounds of W₂Cl₄(OR)₄(ROH)₂ by EXAFS

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