Reactions of the Bis(dialkylphosphino)methane Complexes Pd<sub>2</sub>X<sub>2</sub>(μ-R<sub>2</sub>PCH<sub>2</sub>PR<sub>2</sub>)<sub>2</sub> (X = halogen, R = Me or Et) with H<sub>2</sub>S, S<sub>8</sub>, COS, and CS<sub>2</sub>; Detection of Reaction Intermediates
作者:Craig B. Pamplin、Steven J. Rettig、Brian O. Patrick、Brian R. James
DOI:10.1021/ic200503d
日期:2011.9.5
with H2S to yield H2 and the bridged-sulfido complexes Pd2X2(μ-S)(dmpm)2 (2a–c), of which 2a and 2b are structurally characterized. With 1a, two rapid reversible equilibria are observed by NMR spectroscopy below −30 °C, and two reaction intermediates are detected; both are likely hydrido(mercapto) species. Reaction of 1a with 1 equiv of elemental sulfur also yields 2a. The reaction of 1a with COS results
Chromophore in binuklearen ringförmigen Gold(I)-Komplexen
作者:Werner Ludwig、Walter Meyer
DOI:10.1002/hlca.19820650326
日期:1982.5.5
31P-NMR. spectra and extinction curves. Their absorption spectra differ from those of the isolated linear PAuP-complexes mainly by a very strong band at low energy which is absent in the latter. There is a strong interaction between the PAuP-entities only in certain excited electronic states and an understanding of all transitions is only possible, if both chromophores PAuP and (PAuP)2 are taken as a
Making Amines Strong Bases: Thermodynamic Stabilization of Protonated Guests in a Highly-Charged Supramolecular Host<sup>1</sup>
作者:Michael D. Pluth、Robert G. Bergman、Kenneth N. Raymond
DOI:10.1021/ja072654e
日期:2007.9.1
of the protonated amines are then used to calculate the effective basicity of the encapsulated amines. Depending on the nature of the guest, shifts in the effective basicities of the encapsulated amines of up to 4.5 pK(a) units are observed, signifying a substantial stabilization of the protonated form of the guest molecule and effectively making phosphines and aminesstrongbases.
Synthesis, Structural Characterization, and Photophysical Study of Luminescent Face-to-Face Dinuclear Platinum(II) Alkynyl Phosphine Complexes and Their Tetranuclear Mixed-Metal Platinum(II)−Silver(I) and −Copper(I) Complexes
作者:Sammual Yu-Lut Leung、Wai Han Lam、Nianyong Zhu、Vivian Wing-Wah Yam
DOI:10.1021/om100473q
日期:2010.11.8
A series of luminescent face-to-face dinuclear platinum(II) alkynyl phosphine complexes with trimethoxyphenyl and carbazole moieties have been synthesized by phosphine exchange reaction. Two mixed-metal tetranuclear platinum(II)−silver(I) and −copper(I) complexes have also been synthesized. The complexes are well characterized by 1H, 13C, and 31P NMR spectroscopy, positive ion FAB mass spectrometry
Synthesis of a DMPM and Hydrido-Bridged Diiridium Complex, [(Cp*Ir)<sub>2</sub>(μ-dmpm)(μ-H)<sub>2</sub>][OTf]<sub>2</sub>, and Its Reactivity toward Alkynes and Isocyanides
tert-butylisocyanide to give the simple adduct [(Cp*Ir)(CNtBu)(μ-dmpm)(μ-H)(Cp*Ir)(H)][OTf]2 (7), while reaction of 1 with phenylisocyanide or cyclohexylisocyanide gives μ-aminocarbyne complexes [(Cp*Ir)2(μ,η1-CN(H)R)(μ-dmpm)(μ-H)][OTf]2 [R = Ph (8a), Cy (8b)]. The structures of 1, 5c, 6a, 7, and 8a have been determined by X-ray diffraction methods.