Inorganica Chimica Acta, Volume 262, Issue 1, 30 September 1997, Pages 21-32
F. Albert Cottona, *, Evgeny V. Dikareva, N. Nawarb and Wai-Yeung Wonga
W2Cl4(NR2)2(PR′3)2 molecules 6. New triply-bonded ditungsten complexes with bis(diphenylphosphino)methane or bis(diphenylphosphino)amine as a bridging ligand. Crystal structures of cis,cis-W2Cl4(NR2)2(dppm) (R=Et, Bun) and W2Cl3(NHCMe3)2(NH2CMe3)(PPh2NPOPh2)
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http://dx.doi.org/10.1016/S0020-1693(97)05492-3Большое спасибо!