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Germylene and (Diazomethyl)germylene Complexes – Potential Precursors for a Transition‐Metal–Germa‐Alkyne Complex
Author(s) -
Bonnefille Eric,
SaffonMerceron Nathalie,
Couret Claude,
Mazières Stéphane
Publication year - 2012
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/ejic.201200891
Subject(s) - chemistry , alkyne , trimethylsilyl , tetrahydrofuran , moiety , germanium , tungsten , yield (engineering) , transition metal , metal , lithium (medication) , salt (chemistry) , photodissociation , nuclear magnetic resonance spectroscopy , medicinal chemistry , photochemistry , polymer chemistry , crystallography , stereochemistry , catalysis , organic chemistry , medicine , materials science , solvent , silicon , metallurgy , endocrinology
The synthesis and characterization of chlorogermylenes and (diazomethyl)germylenes involving the germanium atom coordinated to a tungsten pentacarbonyl group are reported. Treatment of chlorogermylene 1 with pentacarbonyl(tetrahydrofuran) tungsten led to chlorogermylene complex 2 in good yield. A similar reaction with (diazomethyl)germylene 3 gave complex 4 , which rapidly lost the trimethylsilyl moiety to generate tungsten complex 5 . Otherwise, complex 5 was obtained directly by reaction of the lithium salt of trimethylsilyldiazomethane with complex 2 . Complexes 2 and 5 were fully characterized by NMR spectroscopy, mass spectrometry, and X‐ray crystallography. The photolysis of 5 was studied with the aim of generating a germa‐alkyne complex.
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