서지주요정보
$C_{60}$-트리오스뮴 뭉치화합물 유도체의 합성 및 유동성에 관한 연구 = Synthesis and Fluxional Processes of $C_{60}$-Triosmium Cluster Derivatives
서명 / 저자 $C_{60}$-트리오스뮴 뭉치화합물 유도체의 합성 및 유동성에 관한 연구 = Synthesis and Fluxional Processes of $C_{60}$-Triosmium Cluster Derivatives / 김신자.
저자명 김신자 ; Kim, Sin-Ja
발행사항 [대전 : 한국과학기술원, 2001].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8011623

소장위치/청구기호

학술문화관(문화관) 보존서고

MCH 01006

SMS전송

도서상태

이용가능

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반납예정일

초록정보

$C_{60}$ triosmium derivatives, $Os_3(CO)_8L(\mu_3-\eta^2,\eta^2,\eta^2-C_{60})(L=NCMe(2)$, $NMe_3(3)$, $CH_2CH_2(4))$ have been prepared by decarbonylation of $Os_3(CO)_9(\mu_3-\eta^2,\eta^2,\eta^2-C_{60})(1)$ with $Me_3NO$ in the presence of corresponding ligands. $Os_3(CO)_{8-n}(CH_2CH_2)(PhCH_2NC)_n(\mu_3-\eta^2,\eta^2,\eta^2-C_{60})$ (n=1 (5), 2(6)) have also been prepared by decarbonylation of $Os_3(CO)_{9-n}(PhCH_2NC)_n(\mu_3-\eta^2,\eta^2,\eta^2-C_{60})$(n=1, 2) with $Me_3NO$ followed by the substitution of ethylene ligand. The structures of 5 and 6 have been determined by single crystal X-ray diffraction studies. The ethylene ligand in each compound is coordinated to an osmium center in an $\eta^2$-fashion and occupies an equatorial site. The fluxional processes of 4 and 5 have been examined by variable temperature $^1H$ and $^{13}C$ NMR studies. Both compounds exhibit olefin rotation and restricted 3-fold rotation. The olefin rotation of $4(\DeltaG_c^{\ddag}=44.1\pm2.1kJmol^{-1})$ is slower than that of 3, indicating that metal-to-olefin π-backdonation is enhanced by the electron-donating benzyl isocyanide ligand.

서지기타정보

서지기타정보
청구기호 {MCH 01006
형태사항 iv, 47 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sin-Ja Kim
지도교수의 한글표기 : 박준택
지도교수의 영문표기 : Joon-Taik Park
학위논문 학위논문(석사) - 한국과학기술원 : 화학과,
서지주기 참고문헌 : p. 43-45
주제 $C_{60}$-트리오스뮴 뭉치화합물 유도체
$C_{60}$-Triosmium Cluster Derivatives
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