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Your search keyword '"Chong Shik Chin"' showing total 6 results
Start Over Author "Chong Shik Chin" Journal inorganic chemistry
6 results on '"Chong Shik Chin"'

1. Oxidative addition of phenylacetylene to (Ir(CO)(RCN)(PPh3)2)ClO4: preparation, kinetics, and mechanism

Author

Chong Shik Chin, Joogie Yoon, and Joongho Song

Subjects
Acetylene -- Research, Molecular dynamics -- Research, Chemistry
Abstract

Oxidative addition of phenylacetylene and p-tolylacetylene to (Ir(CO)(RCN)(PPh3)2)ClO4 where R = Ph, CH3, CH double bond CHPh, provides (Ir-(H)(-C triple bond CR')(CO)(RCN)(PPh3)2)ClO4 where R' = Ph, R = Ph, CH3, CH double bond CHPh and R' = p-CH3C6H4, R = Ph. Kinetic studies of alkyne hydrogen deuterated phenylacetylene confirm a proposed reaction route.

Published
1993

2. Oxidative addition of phenylacetylene to [Ir(CO)(RCN)(PPh3)2]ClO4: preparation, kinetics, and mechanism

Author

Joogie Yoon, Chong Shik Chin, and Joong-Ho Song

Subjects
Inorganic Chemistry, Reaction mechanism, chemistry.chemical_compound, Addition reaction, Reaction rate constant, Phenylacetylene, chemistry, Nitrile, Hydride, Stereochemistry, Kinetics, Physical and Theoretical Chemistry, Oxidative addition
Abstract

Reactions of PhC≡CH (1a) and p-CH 3 C 6 H 4 C≡CH (1b) with [Ir(RCN)(CO)(PPh 3 ) 2 ] ClO 4 , 2 (R=Ph (a), CH 3 (b), CH=CHPh (c)), give [Ir(H)(-C≡R')(RCN)(CO)(PPh 3 ) 2 ] ClO 4 , 3 (R'=Ph, R=Ph (a), CH 3 (b), CH=HPh (c); R'=p-CH 3 C 6 H 4 , R=Ph (d)), where the hydride is cis both to two PPh 3 groups and trans to RCN. The oxidative addition of 1a to 2a,b is first order both in 1a and 2a,b and depressed by the presence of RCN added

Published
1993
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3. Ligand effects on luminescence of new type blue light-emitting mono(2-phenylpyridinato)iridium(III) complexes

Author

Young Kwan Kim, Min-Sik Eum, Sung Kwon Kang, Song yi Kim, Choongil Kim, Gu Young Kim, Nam Hwi Hur, Jihoon Seo, and Chong Shik Chin

Subjects
Denticity, Chemistry, Ligand, Inorganic chemistry, chemistry.chemical_element, Medicinal chemistry, Nitrogen, Blueshift, Ion, Inorganic Chemistry, Chlorine, Iridium, Physical and Theoretical Chemistry, Luminescence
Abstract

Newly prepared hydrido iridium(III) complexes [Ir(ppy)(PPh3)2(H)L](0,+) (ppy = bidentate 2-phenylpyridinato anionic ligand; L = MeCN (1b), CO (1c), CN(-) (1d); H being trans to the nitrogen of ppy ligand) emit blue light at the emission lambda(max) (452-457, 483-487 nm) significantly shorter than those (468, 495 nm) of the chloro complex Ir(ppy)(PPh3)2(H)(Cl) (1a). Replacing ppy of 1a-d with F2ppy (2,4-difluoro-2-phenylpyridinato anion) and F2Meppy (2,4-difluoro-2-phenyl-m-methylpyridinato anion) brings further blue-shifts down to the emission lambda(max) at 439-441 and 465-467 nm with CIE color coordinates being x = 0.16 and y = 0.18-0.20 to display a deep-blue photoemission. No significant blue shift is observed by replacing PPh3 of 1a with PPh2Me to produce Ir(ppy)(PPh2Me)2(H)(Cl) (1aPPh 2Me), which displays emission lambda max at 467 and 494 nm. The chloro complexes, [Ir(ppy)(PPh3)2(Cl)(L)](0,+) (L = MeCN (2b), CO (2c), CN(-) (2d)) having a chlorine ligand trans to the nitrogen of ppy also emit deep-blue light at emission lambda(max) 452-457 and 482-487 nm.

Published
2008

5. Ligand Effects on Luminescence of New Type Blue Light-Emitting Mono(2-phenylpyridinato)iridium(III) Complexes.

Author

Min-Sik Eum, Chong Shik Chin, Song Yi Kim, Choongil Kim, Sung Kwon Kang, Nam Hwi Hur, Ji Hoon Seo, Gu Young Kim, and Young Kwan Kim

Subjects
*ELECTRON emission, *LUMINESCENCE, *IRIDIUM, *ANIONS, *LIGANDS (Chemistry)
Abstract

Newly prepared hydrido iridium(III) complexes [Ir(ppy)(PPh3)2(H)L]0,+ (ppy = bidentate 2-phenylpyridinato anionic ligand; L = MeCN (1b), Co (1c), CN- (1d); H being trans to the nitrogen of ppy ligand) emit blue light at the emission )λmax (452-457, 483-487 nm) significantly shorter than those (468, 495 nm) of the chloro complex lr(ppy)(PPh3)2(H)(CI) (1a). Replacing ppy of 1a-d with F2ppy (2,4-difluoro-2-phenylpyridinato anion) and F2Meppy (2,4-difluoro-2-phenyl-m-methylpyridinato anion) brings further blue-shifts down to the emission λmax at 439-441 and 465-467 nm with CIE color coordinates being x = 0.16 and y = 0.18-0.20 to display a deep-blue photoemission. No significant blue shift is observed by replacing PPh3 of la with PPh2Me to produce lr(ppy)(PPh2Me)2(H)(Cl) (1aPPh2Me), which displays emission λmax at 467 and 494 nm. The chloro complexes, [lr(ppy)(PPh3)2(CI)(L)]0,+ (L MeCN (2b), CO (2c), CN- (2d)) having a chlorine ligand trans to the nitrogen of ppy also emit deep-blue light at emission λmax 452-457 and 482-487 nm. [ABSTRACT FROM AUTHOR]

Published
2008
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