Výsledky vyhledávání - "Yap, Chee Keong"

Akademický článek

OUTER-SPHERE COORDINATION OF o-PHENANTHROLINE IN AQUABROMOTRI-p-TOLYLTIN o-PHENANTHROLINE

Autor: Ng, Seik Weng, Yap, Chee Keong, Chen, Wei, Das, V. G. Kumar, Sinn, Ekkehard

Publikováno v: Main Group Metal Chemistry, Vol 20, Iss 8, Pp 531-534 (1997)

Externí odkaz: https://doaj.org/article/cf6f9e2d1a814170987d905693cee0e8

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Akademický článek

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The first authenticated example of geometrical isomers in organotin(IV) co-ordination chemistry. The crystal and molecular structures of octahedral cis- and trans-SnR2isomeric adducts of dichlorobis(4-chlorophenyl)tin(IV) with 4,4′-dimethyl-2,2′-bipyridyl

Autor: Thomas C. W. Mak, Pete Smith, V. G. Kumar Das, Yap Chee Keong, Chen Wei

Publikováno v: J. Chem. Soc., Dalton Trans.. :129-137

The crystal structures of the cis- and trans-SnR2 skeletal isomers of the octahedral complex, Sn(C6H4Cl-4)2Cl2·(4,4′- Me2bipy)(4,4′- Me2bipy = 4,4′-dimethyl-2,2′-bipyridyl), solved by X-ray analysis, are reported together with some prelimina

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef7b1499dbe500acbcd5227a8a0b75ca
https://doi.org/10.1039/dt9870000129

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Structural studies on octahedral diorganotin(IV) complexes: the influence of substituents in carbon- and heteroatom-donor ligands on [SnR2] skeletal geometry

Autor: Pete Smith, Yap Chee-Keong, V. G. Kumar Das

Publikováno v: Journal of Organometallic Chemistry. 327:311-326

The synthesis and spectroscopic characterization are described of six-coordinated diorganotin(IV) complexes of the type RR′SnX2·L2 and RR′SnL′2 where RR′ = diphenyl, bis(p-tolyl), bis(m-chlorophenyl), bis(p-chlorophenyl), MeEt, Et(n-Pr); X �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::218d0dbaac9df9ff6987ec2a65aaad0f
https://doi.org/10.1016/s0022-328x(00)99748-1

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Crystal and molecular structure of 2,2′-bipyridyldichlorodi(p-tolyl)tin(IV)

Autor: V. G. Kumar Das, Thomas C. W. Mak, Yap Chee Keong, Chen Wei

Publikováno v: Journal of Organometallic Chemistry. 299:41-49

2,2′-Bipyridyldichlorodi(p-tolyl)tin(IV), C24H22N2Cl2Sn, crystallizes in the monoclinic space group P21/c with a 9.488(2), b 9.895(4), c 18.884(5) A, β 101.71(2)°, V 2290(1) A3 and Z = 4. The structure was determined by direct methods and refined

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90e23e490903038df77ac4b8f538781e
https://doi.org/10.1016/0022-328x(86)84032-3

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Preparation and spectroscopic studies of tri(p-tolyl)-tin(IV) compounds. X-ray crystal structure of the quinoline-N-oxide adduct of tri(p-tolyl)tin(IV) bromide

Autor: Thomas C. W. Mak, V. G. Kumar Das, Yap Chee Keong, Ng Seik Weng, Chen Wei

Publikováno v: Journal of Organometallic Chemistry. 311:289-306

Syntheses and spectroscopic data are presented for R3SnIV compounds, where R is predominantly p-tolyl, of the following types: R3SnX·L (X = Cl, Br or NCS; L = neutral, monodentate oxygen donor), R3SnY (YH = 1,2,4-triazole, N-phenyl-N-benzoylhydroxam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4229fc1027d256c8480319bebca1d6c7
https://doi.org/10.1016/0022-328x(86)80251-0

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Isolation of cis- and trans-[SnR2] configurational isomers of the octahedral complex, dichlorobis(4-chlorophenyl)tin(IV)-4,4′-dimethyl-2,2′-bipyridyl

Autor: Pete Smith, V. G. Kumar Das, Yap Chee Keong

Publikováno v: Journal of Organometallic Chemistry. 291:c17-c19

The coordinative interaction between dichlorobis(4-chlorophenyl)tin(IV) and the chelating ligand, 4,4′-dimethyl-2-2′-bipyridyl (dmbipy), has allowed the isolation of both cis- and trans-[SnR2] configurational isomers of the derived complex, [Sn(4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b1f55196af87367fe42254bddba6dff
https://doi.org/10.1016/0022-328x(85)80175-3

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X-Ray crystal structure of bis(2-methylquinolin-8-olato)(ethyl)n-propyltin(IV)

Autor: Ekkehard Sinn, V. G. Kumar Das, Chen Wei, Yap Chee Keong

Publikováno v: Journal of the Chemical Society, Chemical Communications. :1418

The Crystal structure of the title compound, [Sn(Et)(Pr)(C10H8NO)2](1), shows that tin atom is octahedrally co-ordinated with two alkyl groups approximately trans to each other (C–Sn–C 145°), in marked contrast to the well-documented cis-R2Sn st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69e8d2386939bb2d3a464c4b7ce69ebd
https://doi.org/10.1039/c39840001418

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