Metal-metal double bond formation via steric design. Synthesis and x-ray crystal structure of [Rh(.mu.-tert-Bu2P)(CO)(PMe3)]2(Rh:Rh)

1983 ◽  
Vol 2 (12) ◽  
pp. 1842-1845 ◽  
Author(s):  
Richard A. Jones ◽  
Thomas C. Wright





2000 ◽  
Vol 43 (21) ◽  
pp. 3837-3851 ◽  
Author(s):  
Aleem Gangjee ◽  
Jianming Yu ◽  
John J. McGuire ◽  
Vivian Cody ◽  
Nikolai Galitsky ◽  
...  


1991 ◽  
Vol 46 (12) ◽  
pp. 1625-1628 ◽  
Author(s):  
Stefan Vogler ◽  
Werner Massa ◽  
Kurt Dehnicke

The reaction of tungsten hexachloride with Se4N2 leads to [WCl4(NSeCl)]2, which reacts with pyridine to form [WCl4(NSeCl)Py], and with tetraphenylphosphonium chloride to form PPh4[WCl5(NSeCl)], which was characterized by an X-ray structure determination. Space group P21, Z = 2, 1657 observed unique reflections, R = 0.074, wR = 0.061. Lattice dimensions at —80 C: a = 710.7(1), b = 2217.9(4), c = 953.6(2) pm; β = 111.93(3) . The [WCl5(NSeCl)]- ion possesses an almost linear WNSe group with bond lengths WN = 188 pm, corresponding to a double bond, and NSe = 200 pm.





1993 ◽  
Vol 12 (8) ◽  
pp. 2888-2890 ◽  
Author(s):  
Daniel Miguel ◽  
Julio A. Perez-Martinez ◽  
Victor Riera ◽  
Santiago Garcia-Granda




1992 ◽  
Vol 47 (6) ◽  
pp. 814-818 ◽  
Author(s):  
Karin Ruhlandt-Senge ◽  
Alfred Dirk Bacher ◽  
Gertraude Koellner ◽  
Birgit Siewert ◽  
Ulrich Müller

Reaction of VC14 with (Me3Si)2S in CH2C12 yields an insoluble product with the approximate composition VSC12. Its reaction with PPh4Cl in CH2Cl2 affords (PPh4)3[V2Cl9] · 7 CH2Cl2, whereas PPh4[VOCl4] is formed in the presence of oxygen. According to an X-ray crystal structure analysis, (PPh4)3[V2Cl9] · 7 CH2Cl2 contains [V2C19]3- ions having two face-sharing coordination octahedra but no significant metal-metal bonding (V-V distance 327.5 pm). Crystal data: a = 1386.4(7), b = 1405.6(7), c = 2710(2) pm, α = 95.800(5), β = 95.370(5), γ = 118.11(3)°, triclinic, Ρ 1̄, Ζ = 2; R = 0.066 for 8779 observed reflexions. PPh4[VOCl4] is isotypic with AsPh4[VOCl4] and contains tetragonal-pyramidal [VOCl4]- ions; tetragonal, P4/n, Z = 2, a = 1264.5(2), c = 772.0(2) pm; R = 0.050 for 654 observed reflexions.



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