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  • Electronic Resource  (2)
  • Metal hydride  (1)
  • Silylene complexes  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cluster science 7 (1996), S. 629-641 
    ISSN: 1572-8862
    Keywords: Metal hydride ; cryptate ; phosphine ; carbonyl ; metal-metal bond ; X-ray structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The reactions of RuH3[P(C6H5)3] 3 − with Cr(CO)3(CH3CN)3, Mo(CO)3 (diglyme), or W(CO)3(C3H2CN)3 resulted in the formation of the appropriate [(H5C6)3P]3Ru(μ-H)3 M(CO) 3 − complexes, which have been characterized analytically, spectroscopically, and in one case (M = Cr) by an X-ray diffraction study of the K [N(C2H4OC2H4OCH3)3]+ salt. This complex crystallizes in the triclinic space group Pl witha = 13.666(6),b= 13.7901(7),c = 18.147(8) A,a = 93.23(3)°, β = 94.07(4)° γ = 90.43(4)°, andV = 3405.6 A3 for Z = 2. Final discrepancy indices ofR = 0.048 and Rù = 0.056 were obtained. The hydride ligands, all of which could be located and their positional coordinates refined, completed local pseudo-octahedral coordination about both the ruthenium and thechromium centers. The Ru-H bonds are significantly shorter than the Cr-H ones, 1.65(4) vs. 1.92(4) A, and the Ru-Cr bond distance is 2.5474(9) A.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0009-2940
    Keywords: Rhenium complexes ; Silylene complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of (η5-C5H5)Re(NO)(PPh3)(SiMe2H) (1) and CHCl3, CBr4, and CHI3 give halosilyl complexes (η5-C5H5)Re(NO)-(PPh3)(SiMe2X) [X = Cl (2), Br (3), I (4); 66-84%]. Addition of Me3SiOTf to 2 gives triflate (η5-C5H5)Re(NO)(PPh3)(SiMe2OTf) (5; 97%), which in turn reacts with (Me2N)3S⊕ [SiMe3F2]⊖ to give (η5-C5H5)Re(NO)(PPh3)(SiMe2F) (6; 77%). Reaction of 5 and pyridine gives the base-stabilized silylene complex [(η5-C5H5)Re(NO)(PPh3){SiMe2(NC5H5)}]⊕ TfO⊖ (7; 84%). CH2Cl2 solutions of (η5-C5H5)Re(NO)(PPh3)(CH3) (8) or 2 and Lewis acids are studied by IR and NMR. As assayed by IR, 8/ECl3 solutions (E = B, Al) show ReNO-ECl3 (major) and Re-ECl3 (minor) adducts. Solutions of 2/BCl3 show analogous adducts (-78°C), and in the presence of excess BCl3 (η5-C5H5)Re-(NO-BCl3)(PPh3)(SiMe2Cl) (11) crystallizes. Solutions of 2/AlCl3 show uncomplexed 2 and Re-AlCl3 (major) and ReNO-AlCl3 (minor) adducts. In contrast to 2-7 and 2/BCl3, 1H- and 13C-NMR spectra of 2/AlCl3 suggest an equilibrium with the base-free silylene complex [(η5-C5H5)Re(NO)(PPh3)-( = SiMe2)]⊕ X⊖.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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