Evolution of the dizincocene metal-metal bond in the series Zn2L2 where L = H, CH3, F, η5-C5H5

Michael R. Philpott, Yoshiyuki Kawazoe

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Ab initio plane-wave-based density functional calculations for the molecules Zn2L2 with the ligands L = H, CH3, F, η5-C5H5 (cyclopentadienyl Cp) show how the ZnZn and ZnL bonds evolve to dimetallocene from simple H to the electronically and spatially extended Cp ligand. The metal-metal bond distances (pm) decrease in the order: 240.2 (H), 239 (CH3), 230.4 (F), 230 (Cp) compared to distances: 266 (Zn metal), 246 (Zn22+), 230.5 (crystalline Zn2[C5(CH3)5]2). Analysis is supported by calculation of the total charge and partial charge density distributions and the electron localization function (ELF). In the dizinc region, the ELF consists of a separate ring (torus) and mid-bond axis basin. For molecules with the ligands H, CH3, and F, the mid-bond basin attractor appears on the bond axis at higher ELF followed at lower values by the ring. For Cp, the reverse is true. In the Cp compound, the bonding from ring to metal atom involves both sigma σ-contributions with s-, p-, and d-components and π-contributions with p- and d-components. In the Cp compound, the ELF shows some differentiation in the CC bonding within the C5 ring towards three single C-C and two double C{double bond, long}C bonds.

本文言語English
ページ(範囲)113-123
ページ数11
ジャーナルJournal of Molecular Structure: THEOCHEM
776
1-3
DOI
出版ステータスPublished - 2006 11 20

ASJC Scopus subject areas

  • 生化学
  • 凝縮系物理学
  • 物理化学および理論化学

フィンガープリント

「Evolution of the dizincocene metal-metal bond in the series Zn<sub>2</sub>L<sub>2</sub> where L = H, CH<sub>3</sub>, F, η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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