ISSN:
0044-2313
Keywords:
Tungsten complexes
;
phosphorus heterocycles
;
X-ray structure analysis
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Synthesis and Spectroscopic Characterization of some Pentacarbonyltungsten(0) Complexes with Various 1H-Phosphirene Ligands: Crystal Structures of , and The tungsten(0) complex 1 reacts upon heating with acetylene derivatives 2a-f in toluene to form benzonitrile and the complexes 4a-f (4a: R1 = Ph, R2 = H; 4b: R1 = Ph, R2 = CH3; 4c: R1 = OEt, R2 = H; 4d: R1 = Ph, R2 = CO2Et; 4e: R1, R2 = CO2Me; 4f: R1, R2 = SiMe3), which have been isolated by chromatography. Spectroscopic and mass spectrometric data are discussed. The crystal structures of the compounds 4a, b and d were determined by X-ray single crystal structure analysis (4a: space group P21/n, Z = 4, a = 937,5(2) pm, b = 2202,4(6) pm, c = 1266,3(4) pm, β = 108,94(4)°; 4b: space group P21/c, Z = 4, a = 1293,9(2) pm, b = 923,5(1) pm, c = 2223,4(3) pm, β = 92,385(6)°; 4d: space group P21/c, Z = 4, a = 955,2(2) pm, b = 3190,9(4) pm, c = 930,7(2) pm, β = 99,64(1)°).
Notes:
Der Wolfram(0)-Komplex 1 reagiert beim Erwärmen mit den Acetylenderivaten 2a-f in Toluol zu Benzonitril und den Komplexen 4a-f (4a: R1 = Ph, R2 = H; 4b: R1 = Ph, R2 = CH3; 4c: R1 = OEt, R2 = H; 4d: R1 = Ph, R2 = CO2Et; 4e: R1, R2 = CO2Me; 4f: R1, R2 = SiMe3), die chromatographisch gereinigt und isoliert wurden. Spektroskopische und massenspektrometrische Daten der Komplexe 4a-f werden angegeben und diskutiert. Die Strukturen der Komplexe 4a, b und d konnten durch Einkristall-Röntgenstrukturanalyse aufgeklärt werden (4a: Raumgruppe P21/n, Z = 4, a = 937,5(2) pm, b = 2202,4(6) pm, c = 1266,3(4) pm, β = 108,94(4)°; 4b: Raumgruppe P21/c, Z = 4, a = 1293,9(2) pm, b = 923,5(1) pm, c = 2223,4(3) pm, β = 92,385(6)°; 4d: Raumgruppe P21/c, Z = 4, a = 955,2(2) pm, b = 3190,9(4) pm, c = 930,7(2) pm, β = 99,64(1)°).
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19976231213
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