Weber, Lothar; Kirchhoff, Ralf; Boese, Roland; Stammler, Hans Georg; Neumann, Beate:

Transition metal substituted diphosphenes. 31. Preparation of the (h1-1,2-Diphosphaallyl)iron complex (h5-C5Me5)(CO)2FeP(SiMe3)P:C(SiMe3)2 and reaction with (Z-cyclooctene)Cr(CO)5. Formation and structures of the first h3-ferradiphosphaallyl and h5-1,2-diphospholyl complexes.

In: Organometallics, Jg. 12 (1993) ; Nr. 3, S. 731-737
ISSN: 0276-7333
Zeitschriftenaufsatz / Fach: Chemie
Abstract:
Reaction of equimolar amts. of (h5-C5Me5)(CO)2FeP(SiMe3)2 with ClP:C(SiMe3)2 furnished the h1-diphosphaallyl complex (h5-C5Me5)(CO)2FeP(SiMe3)P:C(SiMe3)2 (6) in addn. to small amts. of the diphosphirane [(h5-C5Me5)(CO)2FeP]2C(SiMe3)2 (7). The isomerization of 6 to the metallodiphosphene (h5-C5Me5)(CO)2FeP:PC(SiMe3)3 (10) was accomplished by catalytic amts. of (Z-C8H14)Cr(CO)5 whereas an excess of the chromium reagent gave rise to the generation of the h3-ferradiphosphaalyl complex h3-[(h5-C5Me5)(CO)2FeP:PC(SiMe3)3]Cr(CO)4 (8) and a few crystals of the 1,2-diphosphaferrocene (h5-C5Me5)h5-{1-[(CO)5Cr]-3,4-(Me3SiO)2-5-(Me3Si)P2C3}Fe (9). The mol. structures of 7, 8, 9, and 10 were elucidated by single-crystal x-ray diffraction anal.

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