Article ID Journal Published Year Pages File Type
1323275 Journal of Organometallic Chemistry 2015 6 Pages PDF
Abstract

•Homoleptic sandwich complexes [M12] (M = Ni, Pt; 1 = 2,3-dihydro-1,3-diborole) are described.•X-ray crystal structure analyses reveal different coordination modes for M = Ni (18 VE) and Pt (14 VE).•DFT MO calculations of [M12] are presented.

Homoleptic metal complexes of the boron heterocycle 2,3-dihydro-1,3-diborole {(R1C)2(R2B)2R3(H)C} 1 are described. X-Ray crystal structure determinations of two nickel and platinum derivatives are presented. In the nickel complex [Ni(1d)2] 6d (R1 = R2 = R3 = Et) the essentially coplanar heterocycles attain a pentahapto coordination mode with a gauche orientation with respect to one another. An 18 VE count is attained. In contrast, in the 14 VE platinum complex [Pt(1a)2] 4a (R1 = R2 = Et, R3 = Me) the ligands are strongly folded and adopt a tetrahapto coordination. The molecule is centrosymmetric in the crystalline state. DFT MO calculations are presented to establish the relative stabilities of these coordination modes for nickel and platinum, respectively.

Graphical abstractIn the homoleptic sandwich complexes [M12] (M = Ni, Pt) two different coordination modes are adopted by the boron heterocycle 2,3-dihydro-1,3-diborole 1, resulting in an 18 valence electron count for M = Ni whilst only 14 valence electrons are reached for M = Pt.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
Authors
, , ,