三核锇簇作为一氧化碳还原化学中间体的模型。1. 在 Os3Cluster 面上逐步将 CO 还原为 μ-CH2Ligand
摘要:
Le traitement de Os 3 (CO) 12 avec K[BH(Oi-Pr) 3 ] a 0°C donne un complexe formyl instable K[Os 3 (CO) 11 (CHO)] dont l'acidification avec H 3 PO 4 donne le nouvel agregat Os 3 (CO) 11 (μ-CH 2 )。Production de CH 4 quand ce dernier complexe est chauffe dans une大气 de H 2
Selective reductions. 33. Potassium triisopropoxyborohydride as a selective reducing agent in organic synthesis. Reaction with selected organic compounds containing representative functional groups
have been developed. Convenient methods available for the preparation of R2BX via the hydroboration of alkenes with monohaloborane complexes (H2BX · SMe2) make this approach valuable for the preparation of various dialkylboranes, R2BH, many of which are not available by direct hydroboration of alkenes with borane itself. The suitability of various hydriding agents, such as borane derivatives, complex
Reaction of carbon monoxide with the coordinately unsaturated metal dimer (.mu.-H)2Rh2[P(O-i-C3H7)3]4 with retention of dimeric form. Crystal and molecular structure of Rh2(.mu.-CO)2[P(O-i-C3H7)3]4
作者:R. R. Burch、E. L. Muetterties、A. J. Schultz、E. G. Gebert、Jack M. Williams
DOI:10.1021/ja00408a039
日期:1981.9
30-electron complex, (..mu..-H)/sub 2/Rh/sub2/(..mu..-CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/. Reaction was rapid to give HRh(CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 3/ and HRh(CO)/sub2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub2/. The chemical and dynamic solution properties of these two mononuclear species is described; the properties of HRh(CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 3/ diverge sharply for uranium
Transient formyl derivatives of rhenium carbonyls. The facile ligand dissociation of halorhenate species
作者:B.A. Narayanan、J.K. Kochi
DOI:10.1016/s0020-1693(00)81272-4
日期:1986.12
Borohydride reduction of halopentacarbonylrhenium(I) affords the corresponding formyl complex I, e.g., BrRe(CO)4CHO−, which differs from that of many other formylmetals in that its stability is unaffected by tin hydrides. This unusual behavior is attributed to the facile loss of the halide from I to afford the coordinatively unsaturated formyl species Re(CO)4CHO which can either rearrange to the hydride
halopentacarbonylrhenium的硼氢化物还原(I)得到相应的甲酰基复杂我,例如,BrRe(CO)4 CHO - ,其中之处在于它的稳定性是通过氢化锡不受影响许多其他formylmetals的不同。这种不寻常的行为归因于卤化物从I易失,从而提供了配位不饱和的甲酰基物种Re(CO)4 CHO,它可以重排为氢化物配合物HRe(CO)5或氧化氢化锡。还描述了对诸如膦,一氧化碳和甲基异氰酸酯的配体的行为。尽管无法分离出氢化锡加合物,但在水后处理中会得到μ-氧-二锡亚锡产物,该产物的新颖结构通过X射线晶体学确定。讨论了甲yl物种分解的途径。
Triphosphine-Ligated Copper Hydrides for CO<sub>2</sub> Hydrogenation: Structure, Reactivity, and Thermodynamic Studies
作者:Christopher M. Zall、John C. Linehan、Aaron M. Appel
DOI:10.1021/jacs.6b05349
日期:2016.8.10
hydrogenation of CO2 to formate, reacts with H2 in the presence of a base to form a cationic dicopper hydride, [(LCu)2H]PF6. [(LCu)2H](+) is also an active precursor for catalytic CO2 hydrogenation, with equivalent activity to that of LCu(MeCN)(+), and therefore may be a relevant catalytic intermediate. The thermodynamic hydricity of [(LCu)2H](+) was determined to be 41.0 kcal/mol by measuring the equilibrium
Formation of bridging acylium and nitrilium complexes by reaction of carbon monoxide and tert-butyl isocyanide with a bridging diiron methylidyne complex. Evidence for strong electron donation from the Fe2C core onto the .mu.-CHC.tplbond.O and .mu.-CHC.tplbond.NR ligands
作者:Charles P. Casey、Mark. Crocker、Gerald P. Niccolai、Paul J. Fagan、Mark S. Konings
DOI:10.1021/ja00226a023
日期:1988.8
Structure cristalline du complexe [C 5 H 5 (CO)Fe] 2 (μ-CO)[μ-CHCNC(CH 3 ) 3 ] + PF 6 − , obtenu par reaction du complexe [C 5 H 5 (CO)Fe] 2 (μ-CO)(μ-CH) + PF 6 − avec CNC(CH 3 ) 3
结构 cristalline du complexe [C 5 H 5 (CO)Fe] 2 (μ-CO)[μ-CHCNC(CH 3 ) 3 ] + PF 6 - , obtenu par reaction du complexe [C 5 H 5 (CO)Fe] 2 (μ-CO)(μ-CH) + PF 6 − avec CNC(CH 3 ) 3