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  • Diphosphapropenes  (1)
  • Diphosphenyl complexes  (1)
  • 1990-1994  (2)
  • 1
    ISSN: 0009-2940
    Keywords: Diphosphapropenes ; CH insertion ; Diphosphiranes ; Chromium complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Rearrangements of the Metallodiphosphapropenes (η5-C5Me5)(CO)2FeP(SiMe3  -  P = C(R)(SiMe3) (R = SiMe3, Ph)Heating of a methylcyclohexane solution of (η5-C5Me5)-(CO)2FeP(SiMe3)  -  P = C(SiMe3)2 (1a) gives rise to the insertion of the P = C moiety into the CH bond of a ring methyl group with formation of the chelate complex η5-ηC5Me4CH2P-[CH(SiMe3)2]P(SiMe3)Fe(CO)2 (2) which is converted into the pentacarbonylchromium derivative [5-C5Me4CH2P[CH-(SiMe3)2]P(SiMe3)[Cr(CO)5]Fe(CO)2] (3). In contrast, a similar treatment of (5-C5Me5)(CO)2FeP(SiMe3)  -  P = C(Ph)(SiMe3) (1 b) furnishes the diphosphirane (5-C5Me5)(CO)2FeP  -  C(Ph)-SiMe3)  -  P (SiMe3) (5). By chromatography of its (CO)5Cr adduct 6, the P  -  Si bond is hydrolyzed to give the (diphosphirane)-chromium complex [(5-C5Me5)(CO)2FeP-C(Ph)(SiMe3)P(H)]-Cr(CO)5 (8). The molecular structures of 3 and 8 are determined by single-crystal X-ray analysis.
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  • 2
    ISSN: 0009-2940
    Keywords: Diphosphenyl complexes ; Fluoroaryl substituents ; Iron complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition-Metal-Substituted Diphosphenes. XIX. - On the Reactivity of Disilylphosphido Iron Complexes towards 2,4.6-(CF3)3C6H2PCl2 and 2.6-(CF3)2C6H3PCl2. Diphosphenyl Complexes with Fluoroaryl Substituents(η5-C5Me5)(CO)2Fe—P(SiMe3)2 (2a) and (η5-C5H5)(CO)(PPh3)-Fe—P(SiMe3)2 (2c) react with ArylPCl2 [3a: Aryl = 2,4,6-(CF)3-C6H2; b: Aryl = 2,6-(CF)2C6H3] to yield the thermolabile diphosphenyl complexes (η5-C5Me5)(CO)2Fe—P=P-Aryl (4a,b) and (η5-C5H5)(CO)(PPh3)Fe—P=P-Aryl (4c,d), respectively. The isolation of the pure compounds 4a-d failed. They are, however, intercepted as their (CO)5Cr adducts 5a-d by treatment with [(Z)-cyclooctene]Cr(CO)5- Complex (η5C5Me5)(CO)2Fe—P[Cr(CO)5]= P-C6H2(CF3)3-(2,4,6) (5a) is characterized by single-crystal X-ray diffraction analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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