Journal ArticleDOI
X-Ray crystal structure of a cationic rhodium hydride complex with a cis-chelating diphosphine ligand [{Rh(dipp)H}2(µ-H)2(µ-ClO4)]ClO4{dipp = Pri2P[CH2]3PPri2}
Kazuhide Tani,Tsuneaki Yamagata,Yoshitaka Tatsuno,Taro Saito,Yuriko Yamagata,Noritake Yasuoka +5 more
TLDR
An X-ray crystallographic study of a rhodium hydride complex containing a cis-chelating diphosphine, isolated from the reaction of a cationic Rhodium(I) hydrogenation catalyst precursor [Rh(dipp)(nbd)]ClO4[dipp = Pri2PC3H6PPri2, nbd = norbornadiene] with H2, has revealed the structure as [{Rh(Dipp)H}2(µ-H)2 (µ)-ClO 4] as mentioned in this paper.Abstract:
An X-ray crystallographic study of a rhodium hydride complex containing a cis-chelating diphosphine, isolated from the reaction of a cationic rhodium(I) hydrogenation catalyst precursor [Rh(dipp)(nbd)]ClO4[dipp = Pri2PC3H6PPri2, nbd = norbornadiene] with H2, has revealed the structure as [{Rh(dipp)H}2(µ-H)2(µ-ClO4)]ClO4, suggesting the presence of a rhodium cis-dihydride species [Rh(dipp)(H)2S2]+(S = solvent), as an intermediate.read more
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Journal ArticleDOI
Aqueous rhodium(III) hydrides and mononuclear rhodium(II) complexes
TL;DR: Reactions of Rh(II) with organic and inorganic radicals and with molecular oxygen are fast and produce long-lived intermediates, such as alkyl, superoxo and hydroperoxo complexes, all of which display rich and complex chemistry of their own.
Journal ArticleDOI
Formation of Trinuclear Rhodium-Hydride Complexes [{Rh(PP*)H}3- (μ2-H)3(μ3-H)][anion]2—During Asymmetric Hydrogenation?
Christina Kohrt,Wolfgang Baumann,Anke Spannenberg,Hans-Joachim Drexler,I. D. Gridnev,Detlef Heller +5 more
TL;DR: Evidence is provided that the presence of multinuclear rhodium-hydride complexes should be taken into account when discussing the mechanism of rhodia-promoted asymmetric hydrogenation.
Journal ArticleDOI
Structural exploration of rhodium catalysts and their kinetic studies for efficient parahydrogen-induced polarization by side arm hydrogenation
TL;DR: In this paper, rhodium complexes with electron-donating bisphosphine ligands, with a dicyclohexylphosphino group, appear to be more effective than conventional rhodIUM catalysts.
Journal ArticleDOI
Synthesis and Reactivity of Rhodium Mono- and Bis(diolefin) Complexes. Characterization of Intermediates in the Rhodium-Catalyzed Cyclotetramerization of Butadiene†
Marco Bosch,Helmut Werner +1 more
TL;DR: Rhodium bis-diolefin complexes of the general composition [Rh(η4-diene)2(L)]X (diene = butadiene, isoprene, 2,3-dimethylbutadiene; L = PiPr3, PCy3, PtBu2Me, AsiPr3 and SbiPr3 as mentioned in this paper, CO, CNtBu, CN-2,6-C6H3iPr2; X = CF3SO3, B(Arf)4)
Journal ArticleDOI
Unusual Dinuclear Hydridorhodium(III) Complexes Containing Bulky Phosphanyl(stibanyl)methanes as Chelating Ligands
TL;DR: In this article, the X-ray crystal structural analysis of PF6 (2a, b) reveals a distorted octahedral geometry around the two metal centers with the two phosphanyl(stibanyl)methanes in a chelating and the two trifluoracetate ligands in a bridging coordination mode.
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