Structures and bonding of homoleptic bis(2,3-dihydro-1,3-diborole) complexes of nickel and platinum

• Verfasst von: Wadepohl, Hubert [VerfasserIn]
• Verfasst von: Krüger, Carl [VerfasserIn]
• Verfasst von: Siebert, Walter [VerfasserIn]
• Titel: Structures and bonding of homoleptic bis(2,3-dihydro-1,3-diborole) complexes of nickel and platinum
• Verf.angabe: Hubert Wadepohl, Carl Krüger, Walter Siebert
• E-Jahr: 2015
• Jahr: 22 June 2015
• Umfang: 6 S.
• Fussnoten: Gesehen am 26.06.2020
• Titel Quelle: Enthalten in: Journal of organometallic chemistry
• Ort Quelle: New York, NY [u.a.] : Elsevier, 1963
• Jahr Quelle: 2015
• Band/Heft Quelle: 798(2015), Seite 146-151
• ISSN Quelle: 1872-8561
• DOI: doi:10.1016/j.jorganchem.2015.06.014
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Boron heterocycle
• Sach-SW: C-H agostic
• Sach-SW: MO calculations
• Sach-SW: Nickel
• Sach-SW: Platinum
• Sach-SW: Sandwich complexes
• K10plus-PPN: 1702643409

Abstract

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.