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Synthesis and X‐ray Structure of [{(Cp′ 2 Nb) 2 WTe 4 }⋅W(CO) 4 ]·1.5C 7 H 8 , the First Organometallic Derivative of the WTe 4 2− Anion, and of [Cp′ 4 Nb 2 Te 2 ] (Cp′ = η 5 ‐ t BuC 5 H 4 )
Author(s) -
Brunner Henri,
Wachter Joachim,
Wanninger Robert,
Zabel Manfred
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200105)2001:5<1151::aid-ejic1151>3.0.co;2-#
Subject(s) - chemistry , crystal structure , crystallography , ion , derivative (finance) , decane , tetrahedron , x ray crystallography , x ray , stereochemistry , diffraction , physics , organic chemistry , financial economics , economics , quantum mechanics , optics
Reaction of [Cp′ 2 NbTe 2 H] ( 1 ) (Cp′ = η 5 ‐ t BuC 5 H 4 ) with [W(CO) 6 ] in decane at 140 °C gives red [{(Cp′ 2 Nb) 2 WTe 4 }⋅W(CO) 4 ] ( 2 ), whereas in the reaction of 1 with [Cr(CO) 6 ] green‐black [Cp′ 4 Nb 2 Te 2 ] ( 3 ) is formed. The crystal structures of 2 and 3 have been determined. The structure of 2 contains a slightly distorted WTe 4 tetrahedron to which two niobocene fragments and one W(CO) 4 group are coordinated. The crystal structure determination of 3 reveals the presence of two Cp′ 2 Nb units bridged by two Te atoms. Complex 2 represents the first example of an organometallic derivative of the unknown WTe 4 2− anion.