Carbametallic Boron Hydride Derivatives. I. Apparent Analogs of Ferrocene and Ferricinium Ion

Syntheses, Structures and Electronic Properties of Zwitterionic Iron(II) and Cobalt(II) Complexes Featuring Ambidentate Tris(pyrazolyl)methanide Ligands

“…[16] These collaborative studies on the chemistry of the Me Tpmd ligand were recently extended to the first sandwich and half-sandwich derivatives [17] of two representative divalent metals, namely Mg and Zn. [18] Most of the aforementioned complexes are well-defined four-or six-coordinate monomeric zwitterions featuring k 3 N-coordinated Me Tpmd ligands with "naked", formally sp 3 -hybridised, apical carbanions. So far, only the Au I compounds have been shown to be coordinated by the apical carbanion of R Tpmd to form a linear, two-coordinate complex containing a covalent AuÀC bond.…”

Isomeric commo‐Ferracarboranes: meso‐, dd/ll‐[PPh3R][commo‐Fe(2,4‐closo‐C2B8H10)2] and Their Bimetal Ferra–Copper Zwitterion Derivatives

“…[1] This initiated the development of the chemistry of commocarborane transition-metal complexes, in which the metal atom is a common vertex of two carborane ligands. At the present time, {C 2 B 9 } ligand-based complexes are the largest group of ferracarboranes.…”

Metallacarboranes: New Synthetic Strategies and Structural Patterns

“…The former is the oldest and most cited, but the latter is not far behind [2]. The original, and current, interest in these compounds stems from the recognition in 1965 by Hawthorne and coworkers that the filled frontier orbitals on the C 2 B 3 open face of [nido-C 2 B 9 H 11 ] 2-were quite similar to the primary metal bonding orbitals in the cyclopentadienide [C 5 H 5 ] -(Cp) ion [4]. This similarity has been verified, both theoretically and experimentally; a number of mixed-, full-and half-sandwich complexes involving this ligand have been synthesized and characterized [2].…”