Alkoxy and aryloxy derivatives of (pentamethylcyclopentadienyl)ruthenium. X-ray crystal structures of [(.eta.5-C5Me5)Ru(.mu.-OMe)]2, [(.eta.5-C5Me5)(CO)Ru(.mu.-OEt)]2, and (.eta.5-C5Me5)Ru(.eta.5-2,6-tBu2C6H3O) and molecular orbital analysis of [(.eta.5-C5H5)Ru(.mu.-OMe)]2

Abstract

ChemInform Abstract The alkoxide-bridged Ru dimers (IIIa) (space group C2/c, Z = 8) and (IIIb) are prepared according to the scheme. The ethoxide dimer (IIIb) reacts with CO (IV) to form the adduct (V) (P421c, Z = 8). An analogous adduct of (IIIa) is observed by 1H NMR but is unstable. Reaction of the 2,6-di-tert.-butylphenoxide (VI) with the tetramer (I) gives the η5-oxocyclohexadienyl complex (VII) ( P21/n, Z=4). The electronic structure of ((η5-C5H5)Ru(µ-OMe))2 is investigated by using Fenske-Hall MO calculations.

Fluorine as a ligand substituent in organometallic chemistry: A second chance and a second research career

“…Fortunately I had served on the Ph.D. examination committee of one of Dave Lemal's students, Rick Soelch, who had educated me that hexafluoro-2,4-cyclohexadienone could be persuaded to extrude CO under flash vacuum pyrolysis (FVP) conditions to afford hexafluorocyclopentadiene [40]. My organometallic literature background also equipped me with the knowledge that the Cp*Ru fragment would bind to the p-face of almost any arene [41][42][43], including phenoxide anions [44,45]. This confluence of information led me to ask Owen Curnow, a postdoc from New Zealand, to do the reaction of [Cp*RuCl] 4 with the thallium salt of pentafluorophenol.…”

Phenolat‐Komplexe von Eisen(II) in unterschiedlichen Spinzuständen

“…M= Li oder Na. [10] und [Mn(C 6 H 5 O)(CO) 3 ] 21.38 [11] ). Die Struktur von 3 a erweckt den Eindruck, dass ein dritter Alkylsubstituent in der para-Position des Phenolats notwendig ist, um die für 2 a gefundene s-Koordination des Phenolats zu stabilisieren.…”

“…Die Struktur von 3 a erweckt den Eindruck, dass ein dritter Alkylsubstituent in der para-Position des Phenolats notwendig ist, um die für 2 a gefundene s-Koordination des Phenolats zu stabilisieren. Von den erwähnten Oxocyclohexadienyl-Liganden wurden die Ir-, [7] Rh- [8] und Ru-Derivate [9,10] aus Phenolat-Ionen in direkter Reaktion erhalten. Für Cyclopentadienyleisen-Komplexe mit OxocyclohexadienylLiganden mussten indirekte Synthesewege entwickelt werden.…”

Structure and Reactivity of Coordinatively Unsaturated Half‐Sandwich Iron, Ruthenium and Osmium Complexes

“…Although they do not fall specifically within the scope of this review, we should mention here a number of binuclear 16-electron complexes of the type [(Cp*Ru) 2 (µ-RX) 2 ] {RX ϭ OMe, [43,44] OPh, [45] OCH 2 CF 3 , [28] PhNH, [46] S(2,6-Me 2 C 6 H 3 ) [47] }, which are useful precursors for the preparation of further unsaturated complexes. These compounds display ''folded'' structures in the solid state and have been prepared by reaction of [(Cp*RuCl) 4 ] [24] [25] represented in Figure 3.…”