ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactions of Complex Ligands, XXIII. Bis(phosphino)indene Derivatives from Carbon Carbon Bond Formation between Arylcarbene Ligands and Bis(diphenylphosphino)acetylenePentacarbonyl(methoxyphenylcarbene) complexes of chromium and tungsten (1a, 2a) react with bis(diphenylphosphino)acetylene (3) via CO substitution to give binuclear alkyne bridged bis(carbene) complexes (CO)4[CH3O(C6H5) C]M-[(C6H5)2P-C ≡ C-P(C6H5)2]-M(CO)4[C(OCH3)C6H5](4a, 5a). The chromium compound 4a is cleaved on warming to yield the tetracarbonyl-[1,2-bis(phosphino)indene]chromium complex 6a and la. In a one-pot reaction the bis(phosphino)indene derivatives 6a-c are formed directly from arylcarbene chromium complexes (CO)5Cr[C(p-RC6H4)OCH3] (R=;H, CH3, CF3) (1a-c) and 3. The structure of 6c is established by X-ray analysis.
Notes:
Pentacarbonyl(methoxyphenylcarben)-Komplexe des Chroms und Wolframs (1a, 2a) reagieren mit Bis(diphenylphosphino)acetylen (3) unter CO-Substitution zu den zweikernigen alkin-verbrückten Bis(carben)-Komplexen (CO)4[CH3O(C6H5) C]M-[(C6H5)2P-C ≡ C-P(C6H5)2]-M(CO)4[C(OCH3)C65](4a, 5a). Die Chrom-Verbindung 4a wird beim Erwärmen in den Tetracarbonyl [1,2-bis(phosphino)inden]chrom-Komplex 6a und 1a gespalten. Aus den Arylcarben-Chrom-Komplexen (CO)5Cr[Cp-RC6H4)OCH3] (R=;H, CH3, CF3) (1a-c) und 3 entstehen direkt die 1,2-Bis(phosphino)inden-Derivate 6a-c. Der Molekülbau von 6c wird durch eine Röntgenstrukturanalyse belegt.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19831160622
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