Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Sam Wing-Kin Choi"'
Autor:
Vivian Wing-Wah Yam, C.W. Chan, Sam Wing-Kin Choi, Nianyong Zhu, Wai Han Lam, Eddie Chung-Chin Cheng, Kai-Leung Cheung
Publikováno v:
Chemistry – An Asian Journal. 1:273-286
A novel class of tetranuclear copper(I) alkynyl complexes with an "open-cube" structure was synthesized. The crystal structure of [Cu4{P(p-MeC6H4)3}4(mu3-eta(1),eta(1),eta(2)-C[triple bond]C-p-MeOC6H4)3]PF6 was determined. These complexes were found
Publikováno v:
Organometallics. 15:1734-1739
Reaction of [Au(C⋮CR)]∞ with dppb and tppb in CH2Cl2 afforded the corresponding luminescent Au2(dppb)(C⋮CR)2 and Au4(tppb)(C⋮CR)4 (dppb = 1,4-bis(diphenylphosphino)benzene; tppb = 1,2,4,5-tetrakis(diphenylphosphino)benzene; R = C6H13, Ph, 4-M
Publikováno v:
J. Chem. Soc., Dalton Trans.. :3411-3415
A series of organometallic complexes [Au2(dppf)R2][dppf = Fe(η-C5H4PPh2)2; R = Me, Ph, 1-naphthyl, 9-anthryl, pyren-1-yl (C16H9), CCPh or CCBut] have been synthesized. Their photophysical and electrochemical properties have been studied. Both excime
Autor:
Sam Wing-Kin Choi, D. Michael P. Mingos, David J. Williams, Vivian Wing-Wah Yam, Thomas Müller, Don M. Murphy
Publikováno v:
Journal of Organometallic Chemistry. 484:209-224
A series of closely related ethynyl-gold(I) complexes was synthesized by reaction of Au(PR 3 )Cl with an alkaline solution of the ethyne. The molecular structures of the ethynediyl-digold complexes NpPh 2 PACCAuPNpPh 2 ·2CHCl 3 ( 1 )
Autor:
Wai Kin Chan, Po-King Ng, Vivian Wing-Wah Yam, C.W. Chan, Sze-Chit Yu, Eddie Chung-Chin Cheng, Keith Man-Chung Wong, Kung-Kai Cheung, Sam Wing-Kin Choi
Publikováno v:
Chemical Communications. :53-54
Two tetrahedral four-coordinate Au(I) complexes, [Au(4-R-dppn)2]PF6 (R = H or Me), have been synthesized and the crystal structure of [Au(dppn)2]Cl has been determined by X-ray crystallography; the complexes have been found to exhibit both photolumin
Autor:
Sam Wing-Kin Choi, Vivian Wing-Wah Yam
Publikováno v:
Journal of the Chemical Society, Dalton Transactions. :4227
A series of alkynylgold(I) phosphine complexes with various bridging phosphines and acetylide ligands have been synthesized. All complexes have been shown to exhibit rich photophysical and photochemical behaviour. A systematic comparative study on th
Publikováno v:
Chemical Communications. :2067
A novel luminescent tetranuclear copper(I) acetylide [ Cu4(PPh3)4(µ3η1,η1, η2-CCC6H4OMe-p)3]+ 1 with open-cube structure is synthesized and its photoredox activities studied; the X-ray crystal structure of 1 is also reported.
Autor:
Jonathan L. Sessler, Steven J. Weghorn, Vincent Lynch, Kjell Fransson, Vivian Wing-Wah Yam, Vicky Wing-Man Lee, Kung-Kai Cheung, Rafael Ortiz, Seth R. Marder, Lap-Tak Cheng, Bruce G. Tiemann, Silvia Cavagnero, Joseph W. Ziller, Sam Wing-Kin Choi, Kenneth Kam-Wing Lo, Wu-Fat Dung, Richard Yuen-Chong Kong, Norman M. Waldron, Majid Montevalli, Shamim Azam, Peter C. Dasopoulos
Publikováno v:
Journal of the Chemical Society, Chemical Communications. :801
Publikováno v:
Journal of the Chemical Society, Chemical Communications. :2379
Efficient visible-light induced cleavage of plasmid pBR322 DNA by the long-lived triplet excited state of the polynuclear d10[Au3(dmmp)2]3+ complex has been found to involve the cleavage of the supercoiled form I to the nicked form II, which ma be cl
Autor:
Vivian Wing-Wah Yam, Sam Wing-Kin Choi
Publikováno v:
Journal of the Chemical Society, Dalton Transactions. :2057
Reaction of [Au2(dmpm)Cl2] or [Au3(dmmp)Cl3] with an excess of organolithium reagent LiR in diethyl ether gave [Au2(dmpm)R2] or [Au3(dmmp)R3] in high yield [dmpm = Me2PCH2PMe2; dmmp = Me2PCH2P(Me)CH2PMe2; R = Me or C6H4OMe-p]. These compounds were fo