Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Sin Yee Ng"'
Publikováno v:
International Journal of Mass Spectrometry. 389:59-65
This paper describes the development of a cosmetic cream certified reference material containing lead, mercury and arsenic. High accuracy exact matching isotope dilution mass spectrometry or standard addition method was used for the assignment of cer
Autor:
Sin Yee Ng, Yi Ding, Lay Peng Sim, Aimei Zou, Richard Y.C. Shin, Kim Loong Yuen, Tong Kooi Lee
Publikováno v:
International Journal of Mass Spectrometry. :19-24
The accurate determination of trace elements in drinking water (nickel, cadmium and lead) has been achieved by adopting exact-matching isotope dilution mass spectrometry (IDMS) technique. The measurement uncertainty of the method was rigorously inves
Autor:
David Y.-K. Chen, Chek Shik Lim, Sin Yee Ng, Rong Ji Sum, Vengala Rao Ravu, Gulice Y. C. Leung
Publikováno v:
European Journal of Organic Chemistry. 2011:463-468
In this communication, second-generation analogues of palmerolide A, a recently reported cytotoxic agent against melanoma cancer cells, were rationally designed, synthesized, and biologically evaluated. Structural variations of the enamide side chain
Publikováno v:
European Journal of Inorganic Chemistry. 2008:144-151
A number of (indenyl)ruthenium complexes containing dppf [1,1′-bis(diphenylphosphanyl)ferrocene] and heterocyclic thiolato/thione ligands have been synthesized. All the complexes were fully characterized by microanalytical and spectroscopic techniq
Publikováno v:
European Journal of Inorganic Chemistry. 2007:3827-3840
Halide substitution of the complexes [(Ind)Ru(L2)X] {Ind = η5-C9H7. 1: (L2) = dppf [1,1′-bis(diphenylphosphanyl)ferrocene], X = Cl; 2: (L2) = dppm [1,1′-bis(diphenylphosphanyl)methane], X = Cl; and 18: (L2) = (CO)2, X = I} with the 1,1-dithiolat
Publikováno v:
Organometallics. 26:3352-3361
The Ru(IV) phosphine complex [(η3,η3-C10H16)RuCl2(κ1P-LH)] (2) was synthesized from the reaction of [(η3,η3-C10H16)RuCl2]2 with [(C9H7)(CH2)2PPh2] (LH). Treatment of 2 with acid led to halide labilization to give [(η3,η3-C10H16)RuCl(CH3CN)(κ1
Publikováno v:
European Journal of Inorganic Chemistry. 2007:463-471
The reaction of [(Ind)Ru(dppf)Cl] (Ind = η5-C9H7) (2) with RSNa {R = Me, Et, Ph, Ph2P(CH2)2} proceeds in MeOH to give [(Ind)Ru(dppf)(SR)] {R = Me (3), Et (4), Ph (5), Ph2P(CH2)2 (7)}, as well as [(Ind)Ru(dppf)H] (6), in all cases except for R = Ph.
Autor:
Weng Kee Leong, Geok Kheng Tan, Suming Ye, Yinghuai Zhu, Sin Yee Ng, Lai Yoong Goh, Lip Lin Koh
Publikováno v:
European Journal of Inorganic Chemistry. 2006:663-670
The salt elimination reaction between NaCo(CO)4 and the ruthenium complexes LRu(diphos)Cl and [(Ind)Ru(CO)2Cl] afforded the Ru–Co bimetallic complexes [LRu(μ-CO)2(μ-diphos)Co(CO)2] [L = C5Me5 (Cp*), diphos = Ph2P(CH2)nPPh2, 3a: n = 1 , or 3b: n =
Autor:
Richard D. Webster, Geok Kheng Tan, Lai Yoong Goh, Soo Beng Khoo, Richard Y. C. Shin, Sin Yee Ng, Lip Lin Koh
Publikováno v:
Organometallics. 23:547-558
The reaction of [(HMB)RuII(κ3SSS‘-tpdt)] (1; HMB = η6-C6Me6; tpdt = S(CH2CH2S-)2) with 0.5 molar equiv of [Cp*RuIIICl2]2 (2A; Cp* = η5-C5Me5) at ambient temperature gives a mixture of products consisting of the dinuclear complex [{RuIII(μ-1κ3S
Publikováno v:
Journal of Organometallic Chemistry. 688:100-111
Ruthenium(II) carboxylate and dithiocarbamate complexes containing 1,1′-bis(diphenylphosphino)ferrocene (dppf) were synthesized by displacement of triphenylphosphine in Ru(RCOO) 2 (PPh 3 ) 2 (R=Me, Et, Ph) and Ru(SC(S)NEt 2 ) 2 (PPh 3 ) 2 with dppf