کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1323259 | 977276 | 2015 | 5 صفحه PDF | دانلود رایگان |
The compounds (dmpe)Ni{κ2-2,2′-[1-(1′-1′,2′-closo-C2B10H10)-1,2-closo-C2B10H10]} (1) and (dppe)Ni{κ2-2,2′-[1-(1′-1′,2′-closo-C2B10H10)-1,2-closo-C2B10H10]} (2) have been synthesised and fully characterised, including crystallographic studies. In all three structures studied (1, 2 and 2·2THF) the metal atom is slightly distorted from square-planar towards tetrahedral (τ4 values [Houser et al., 2007] of 0.30, 0.33 and 0.11, respectively). Consideration of these molecular structures together with those of related species in the literature allows us to tentatively conclude that, in square-planar NiII compounds, the structural trans effect (trans influence) of σ-bonded carborane is greater than that of Cl and sp2 N but less than that of sp2 C and sp3 C.
Two compounds are reported in which an approximately square-planar NiII centre is ligated by doubly-deprotonated 1,1′-bis(ortho-carborane) and a chelating diphosphine. The Structural Trans Effect of σ-bonded carborane in this environment is assessed.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 798, Part 1, 1 December 2015, Pages 36–40