Synthesis, characterization and electrocatalytic H2 production of phosphine-substituted CpFe complexes
摘要:
Reaction of Ph2P(Se)CSNHPh with Cp2Fe2(CO)(4) in refluxing toluene affords complexes CpFe(CO)(k(2)P,S-Ph2PC(S)=NPh) (1) and CpFe(CO)(2)(kP-P(=Se)Ph-2) (2). Further, reactions of 2 with 1 equiv of PPh2R in the presence of Me3NO generate complexes CpFe(CO)(kSe-SeP(=Se)Ph-2)(L) (3, L = PPh3; 4, L = PPh2Py). Unlike 2, reactions of CpFe(CO)(2)(kP-P(=S)Ph-2) with PPh2R under the same conditions give the corresponding phosphine-substituted complexes CpFe(CO)(kp-p(=S)Ph-2)(L) (5, L= PPh3; 6, L = PPh2Py). All the new compounds have been characterized by elemental analyses, IR, H-1 NMR, C-13 NMR and P-31 NMR spectroscopy and structurally determined by X-ray crystallography. Electrochemical studies indicate that using HOAc or TFA as a proton source complexes 1-6 can catalyze H-2 evolution. (C) 2018 Published by Elsevier Ltd.
Insertion Reactions and Catalytic Hydrophosphination of Heterocumulenes using α-Metalated <i>N</i>,<i>N</i>-Dimethylbenzylamine Rare-Earth-Metal Complexes
作者:Andrew C. Behrle、Joseph A. R. Schmidt
DOI:10.1021/om300807k
日期:2013.3.11
dimethylbenzylamine) was probed through a series of stoichiometric insertion and catalytic hydrophosphination reactions. Both rare-earth-metal species inserted 3 equiv of various carbodiimides to form the corresponding homoleptic amidinates. α-La(DMBA)3 was also found to be a useful precatalyst for the room-temperature hydrophosphination of heterocumulenes to form phosphaguanidines, phosphaureas, and phosphathioureas
Reactions of isocyanates with primary and secondary phosphines without solvent at room temperature afforded the corresponding phosphinecarboxamide (RN(H)COPR'2) in excellent yields. This reaction system is applicable for isothiocyanates. The compounds newly obtained were fully characterized using multielement NMR spectroscopy. In addition, the molecular structure of Cl(CH2)2N(H)COPPh2 was studied by
Hydroamination and Hydrophosphination of Isocyanates/Isothiocyanates under Catalyst‐Free Conditions
作者:Xiancui Zhu、Mengchen Xu、Jinrong Sun、Dianjun Guo、Yiwei Zhang、Shuangliu Zhou、Shaowu Wang
DOI:10.1002/ejoc.202100932
日期:2021.10.7
Various ureas, thioureas, phosphathioureas and their chiral analogues were synthesized in good to excellent yields by the hydroamination and hydrophosphination of isocyanates/isothiocyanates under catalyst-free conditions.
Phosphinsubstituierte chelatliganden I. Mangan- und rheniumcarbonyl-komplexe mit phosphino-(thio)formamid- und -dithioformiat-liganden
作者:U. Kunze、A. Antoniadis、M. Moll
DOI:10.1016/s0022-328x(00)80129-1
日期:1981.7
of the appropriate metal carbonyl halides with the free ligands or their silyl intermediates. The silyl method yields both cis-(CO)4ML and fac-(CO)3M(X)L (X Cl, Br) complexes by controlled addition of water. Analytical, spectroscopic and crystallographic data of the ambidentate thioformamide ligands result in a P,S-coordination in all complexes. The 13C NMR spectra of several selected compounds were
[MnBr(CO)5] reacts with the potassium diorganylphosphino-dithioformates or -thioformamides KS(X)CPR2 (X = S, NPh: R = Ph, Cy; Cy = cyclo-C6H11), respectively, to give the monomeric tetracarbonylmanganese(I) complexes [MnS(X)CPR2}(CO)4] (IaId), whereas with the thioureas R′2NC(S)NPhH (R′ = Me, Et) dinuclear carbonylthioureidomanganese(I) complexes of the type [Mn[μ-S(NPh)CNR′2](CO)3}2] are obtained