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Chemical bonding in methylidyne complexes Neutron diffraction study on a single crystal of BrW3 (CH(dmpe-d)12)2 at 100 K and 293 K.

Abstract : Carbyne complexes have been extensively studied but only a few of them contain the M[triple bond, length as m-dash]C–H moiety (M = transition metal). In order to contribute to the debate about the linearity of this fragment, two neutron diffraction experiments on single crystal have been performed at 100 and 293 K on the trans-W(CH)(dmpe)2Br (dmpe = 1,2-bis(dimethylphosphino)ethane) (1). The results point, without ambiguity, to the linearity of the fragment. The specific behaviour of the dmpe ligand is modelled and interpreted.
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C. Ménoret, Anne Spasojevic - de Biré, Q.D. Nguyen, A. Cousson, Jean-Michel Kiat, et al.. Chemical bonding in methylidyne complexes Neutron diffraction study on a single crystal of BrW3 (CH(dmpe-d)12)2 at 100 K and 293 K.. Journal of the Chemical Society, Dalton Transactions, 2002, pp.3731-3736. ⟨10.1039/b204383a⟩. ⟨hal-02296844⟩

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