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Hoseop Yun,Yongkwan Dong,Jungwook Kim,Song-i Hahn,Junghwan Do 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.8
Three new quaternary tantalum thiophosphates, K0.18TaPS6, K0.28TaPS6, and Rb0.09TaPS6 have been synthesized by using reactive alkali metal halide fluxes and structurally characterized by single crystal X-ray diffraction techniques. The crystal structures of K0.18TaPS6, K0.28TaPS6, and Rb0.09TaPS6 contain 3-dimensional open framework anions, [TaPS6]x (x = 0.09, 0.18, 0.28) with the empty channel which disordered alkali metal cations, K+ and Rb+ are located in. Crystal data: K0.18TaPS6, tetragonal, space group I41/acd (no. 142), a=15.874(3) Å, c=13.146(4) Å, V=3312.7(12) Å3, K, Z=16, R1=0.0545. Crystal data: K0.28TaPS6, tetragonal, space group I41/acd (no. 142), a=15.880(2) Å, c=13.134(3) Å, V=3312.1(10) Å3, Z=16, R1=0.0562. Crystal data: Rb0.09TaPS6, tetragonal, space group I41/acd (no. 142), a=15.893(3) Å, c=13.163(4) Å, V=3324.7(15) Å3, Z=16, R1=0.0432.
Do, Jung-Hwan,Dong, Yong-Kwan,Kim, Jung-Wook,Hahn, Song-I,Yun, Ho-Seop Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.8
Three new quaternary tantalum thiophosphates, $K_{0.18}TaPS_6,\;K_{0.28}TaPS_6,\;and\;Rb_{0.09}TaPS_6$ have been synthesized by using reactive alkali metal halide fluxes and structurally characterized by single crystal X-ray diffraction techniques. The crystal structures of $K_{0.18}TaPS_6,\;K_{0.28}TaPS_6,\;and\;Rb_{0.09}TaPS_6$ contain 3-dimensional open framework anions, $[TaPS_6]^{x-}$(x = 0.09, 0.18, 0.28) with the empty channel which disordered alkali metal cations, $K^+\;and\;Rb^+$ are located in. Crystal data: $K_{0.18}TaPS_6$, tetragonal, space group$I4_1$/acd (no. 142), a=15.874(3) $\AA$, c=13.146(4) $\AA$, V=3312.7(12) ${\AA}^3$, K, Z=16, R1=0.0545. Crystal data: $K_{0.28}TaPS_6$, tetragonal, space group $I4_1$/acd (no. 142), a=15.880(2) $\AA$, c=13.134(3) $\AA$, V=3312.1(10) ${\AA}^3$, Z=16, R1=0.0562. Crystal data: $Rb_{0.09}TaPS_6$, tetragonal, space group I41/acd (no. 142), a=15.893(3) $\AA$, c=13.163(4) $\AA$, V=3324.7(15) ${\AA}^3$, Z=16, R1=0.0432.
C-2와 C-2,4 위치에 치환된 8-aza-bicyclo[3.2.1]octan-3-one 유도체 합성 및 구조분석
정대일,이도훈,송주현,이용균,최순규,박유미,한정태 동아대학교 환경문제연구소 2006 硏究報告 Vol.28 No.1
The tropane ring system is an important substructure in a number of natural products and synthetic compounds of biological and medicinal importance. As a result of the significance of the tropane ring system, the purpose of this study is the synthesis of anticonvulsant compounds of new structure anticipated anticonvulsant activity. After we first synthesized the various N- substituted 8-aza-bicyclo[3.2.1]octan-3-one derivatives. We prepared now 2-substituted nortropinones. 2-Substituted 8-aza- bicyclo [3.2.1]octan-3-ones were obtained from diluted NaOH concentration(0.01N NaOH) in similar method of synthesis of 2,4-disubstituted 8-aza-bicyclo[3.2.1]octan-3-ones 23, 24, 25 were respectively synthesized by the reaction of corresponding N-substituted 8-aza-bicyclo[3.2.1]octan-3-one with corresponding aldehyde in presence of 5N-NaOH solution in ethanol and dichloromethane at room temperature. Substantially, we tried several experiments to optimize reaction condition. Continuously, the synthesis and anticonvulsant activity evaluation of a new class of 8-aza-bicyclo[3.2.1]octan-3-one derivatives are in progress and will be reported in future.
Particle Balance Study for the Fueling Efficiency in KSTAR Experiments 2013
J-. W. Juhn,S. H. Hahn,S. H. Hong,J. I. Song,Y. O. Kim,K. P. Kim,J. S. Kim 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.8
The efficiencies of the fueling system in the KSTAR have been studied for the 2013 experimentalresults. The absolute amount of injected fuel or deuterium has been calibrated in advance of themain plasma experiments. This includes the primary actuator of fueling, i.e., gas puffing (GP)with piezoelectric valves located on mid-plane, and supersonic molecular beam injector (SMBI). In addition, neutral beam injectors (NBIs) and their base facility chamber also contribute to theamount of fuel injection whenever they are operated. Low fueling efficiency combined with particleloss due to wall retention essentially results in poor performance of density feedback control magneticfusion devices such as the KSTAR.
Di-(N-tropinonyl)alkane들의 합성 및 구조 분석
송주현,정대일,이용균,최순규,박유미,한정태 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1
Di-(N-tropinonyl)alkanes (1,2-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)ethane 12, 1,3-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)propane 15, 1,8-di(8-aza-bicyclo[3,2,1]octan-3-onyl)octane 18) were prepared in the reaction of diaminoalkanes with 2,5-dimethoxytetrahydrofuran, and acetonedicarboxylic acid.
Tropane Spirohydantoin들의 합성 및 구조분석
정대일,이도훈,송주현,이용균,최순규,박유미,한정태 동아대학교 환경문제연구소 2006 硏究報告 Vol.28 No.1
The tropane ring system is an important substructure in a number of natural products and synthetic compounds of biological and medicinal importance. As a result of the significance of the tropane ring system, the purpose of this study is the synthesis of anticonvulsant compounds of new s tructure anticipated anticonvulsant activity. After we first synthesized the various N-substituted nortropinone derivatives, we prepared new nortropane alkaloids and nortropinone derivatives. Substantially, we tried several experiments to optimize reaction condition. The tropane spirohydantoins 17, 18, 19, 20, 21 were respectively synthesized by the treatment of corresponding N-substituted nortropinone with potassium cyanide and ammonium carbonate.