Organometallic thermochemistry. Metal hydrocarbyl, hydride, halide, carbonyl, amide, and alkoxide bond enthalpy relationships and their implications in pentamethylcyclopentadienyl and cyclopentadienyl complexes of zirconium and hafnium
作者:Liam J. R. McGeachie、Cameron L. Carpenter‐Warren、David B. Cordes、Michael Bühl、Steven J. Gray、Guoxiong Hua、Alexandra M. Z. Slawin、J. Derek Woollins
DOI:10.1002/zaac.202000238
日期:2020.11.30
to d‐block and main group NSO complexes is presented including the synthesis of the first antimony(V) complexes, (Ar3Sb(NSO)2), and copper examples [CuBipy(PPh3)NSO]. The structures of eight complexes are reported. The observed variation in M–N–S bond angles is due to the combination of orbital overlap (ligand‐to‐metal bonding) and the degree of ionicity of the bonding.
Bis(π-pentamethylcyclopentadienyl)metal-(η-s-cis-diene) complexes of zirconium and hafnium react with carbon monoxide under mild conditions to give mononuclear metal-endiolates 18–20 quantitatively. The corresponding isomeric trans-diene complexes react with carbon monoxide to give metallocene-dicarbonyls Cp★2 M(CO)2 (Cp★ C5(CH3)5), whereas in the case of M Hf a monocarbonyl-η2-butadiene complex
Synthesis and reactivity of alkenyl and alkynyl derivatives of permethylzirconocene and permethylhafnocene. Rearrangement of alkenyl derivatives involving β-H elimination from an sp2-hybridized carbon
作者:Christine McDade、John E. Bercaw
DOI:10.1016/0022-328x(85)87025-x
日期:1985.1
(η5-C5Me5)2M(H)(CHCHPh) and (η5-C5Me5)2M(CHCHPh)2 (M = Zr, Hf). To extend the study of the unsaturated carbon ligands, the bis(propynyl) complexes (η5-C5Me5)2M(CCCH3)2 (M = Zr, Hf) are prepared by treating (η5-C5Me5)2MCl2 with LiCCCH3. The reactivity of many of these complexes with carbonmonoxide and dihydrogen is surveyed.
First Mixed Fluoro−Chloro Group 4 Organometallics: Synthesis and Spectroscopic and Structural Characterization of [{(C<sub>5</sub>Me<sub>5</sub>)ZrF<sub>2</sub>Cl}<sub>4</sub>], [{(C<sub>5</sub>Me<sub>5</sub>)HfF<sub>2</sub>Cl}<sub>4</sub>], [(C<sub>5</sub>Me<sub>5</sub>)<sub>4</sub>Zr<sub>4</sub>(μ-F)<sub>2</sub>(μ-F<sub>2</sub>)<sub>2</sub>(μ-Cl)<sub>2</sub>Cl<sub>4</sub>], [(C<sub>5</sub>Me<sub>5</sub>)<sub>4</sub>Hf<sub>4</sub>(μ-F)<sub>2</sub>(μ-F<sub>2</sub>)<sub>2</sub>(μ-Cl)<sub>2</sub>Cl<sub>4</sub>], [(C<sub>5</sub>Me<sub>4</sub>Et)<sub>2</sub>ZrClF], and [(C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>HfClF]
作者:Eamonn F. Murphy、Thomas Lübben、Axel Herzog、Herbert W. Roesky、Alojz Demsar、Mathias Noltemeyer、Hans-Georg Schmidt
DOI:10.1021/ic950822a
日期:1996.1.1
[(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) react smoothly with Me(3)SiCl in CH(2)Cl(2) at room temperature to give [(C(5)Me(5))ZrF(2)Cl}(4)] (1) and [(C(5)Me(5))HfF(2)Cl}(4)] (2), respectively, in high yield. Treatment of [(C(5)Me(5))MF(3)}(4)] (M = Zr, Hf) with Me(2)AlCl in toluene gives mixtures of 1 and [(C(5)Me(5))(4)Zr(4)(&mgr;-F)(2)(&mgr;-F(2))(2)(&mgr;-Cl)(2)Cl(4)] (3), and 2 and [(C(5)Me(5))(4)Hf(4)(&mgr;