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Preparation of (Nb(eta/sup 5/-C/sub 5/Me/sub 5/)Cl/sub 2/)/sub 2/ and Nb(eta/sup 5/-C/sub 5/Me/sub 5/)(3-hexyne)Cl/sub 2/

Journal Article · · Inorg. Chem.; (United States)
DOI:https://doi.org/10.1021/ic00183a033· OSTI ID:6492764
; ; ;

NbMe/sub 2/(dimethyl)Cl/sub 3/, prepared from NbCl/sub 3/ and ZnMe/sub 2/, reacts well with LiC/sub 5/Me/sub 5/ to yield Nb(eta/sup 2/-C/sub 5/Me/sub 5/)Me/sub 2/Cl/sub 2/. This substance reacts relatively rapidly with molecular hydrogen to produce a green crystalline compound which is similar to (Ta(eta/sup 5/-C/sub 5/Me/sub 5/)ClH)/sub 2/ in color and form. Evidence is presented to suggest that the Nb product is not in the hydride form and is (Nb(eta/sup 5/-C/sub 5/Me/sub 5/)Cl/sub 2/)/sub 2/. The ir spectrum and the /sup 1/HNMR signal do not show the presence of the hydride. The mass spectrum of the product prepared in a reaction in which H/sub 2/ was used and one in which D/sub 2/ was used each exhibits only a parent ion consistent with (Nb(eta/sup 5/-C/sub 5/Me/sub 5/)Cl/sub 2/)/sub 2/. The dimer formulation is supported by experimental results, as well. The dimer reacts with 3-hexyne to prouce a purple analogue of the Ta acetylene complexes, NB(eta/sup 5/-C/sub 5/Me/sub 5/)(3-hexyne)Cl/sub 2/. 17 references.

Research Organization:
Massachusetts Inst. of Tech., Cambridge
DOE Contract Number:
AC02-78ER04949
OSTI ID:
6492764
Journal Information:
Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 23:15; ISSN INOCA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
ALKYNES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COMPLEXES
DATA
DIMERS
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
LIGANDS
MASS SPECTROSCOPY
NIOBIUM COMPLEXES
NMR SPECTRA
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES