서지주요정보
트리오스뮴 $μ_3-η^1,η^2,η^1-C_{60}$ 화합물의 합성 및 반응성에 관한 연구 = Synthesis and reactivity of triosmium $μ_3-η^1,η^2,η^1-C_{60}$ compounds
서명 / 저자 트리오스뮴 $μ_3-η^1,η^2,η^1-C_{60}$ 화합물의 합성 및 반응성에 관한 연구 = Synthesis and reactivity of triosmium $μ_3-η^1,η^2,η^1-C_{60}$ compounds / 최재익.
발행사항 [대전 : 한국과학기술원, 2002].
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등록번호

8012741

소장위치/청구기호

학술문화관(문화관) 보존서고

MCH 02029

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초록정보

The first structurally characterized $metal-C_{60}$ \sigma-complex, $Os_3(CO)_8(RNC)_2(\mu_3-\eta^1\eta^2\eta^1-C_{60})$ ($R = CH_2C_6H_5$) (2), has shown very interesting reactivities with various 2-electron donor ligands. The hydrogen-substituted compound $Os_3(CO)_7(RNC)_2(\mu-H)_2(\mu_3-\eta^1\eta^2\eta^1-C_{60})$ (3) has been prepared by decarbonylation of 2 with $Me_3NO$ followed by reaction under $H_2$ pressure in 65% yield. An axial CO ligand on Os2 is abstracted and the Os1-Os2 and Os2-Os3 bonds are bridged by two hydride ligands. A new \sigma-type $Os_3(CO)_7(RNC)_2(PPh_3)(\mu_3-\eta^1\eta^1\eta^2-C_{60})$ (4) has been generated from 2 upon substitution of CO with $PPh_3$ in 70% yield, and 4 is reconverted to 2 quantitatively under CO pressure. A similar reaction of 2 with $PMe_3$ produces $Os_3(CO)_7(RNC)_2(PMe_3)(\mu_3-\eta^1\eta^2\eta^1-C_{60})$ (5) in 49% yield. The bulky $PPh_3$ ligand substitutes an equatorial carbonyl ligand of the Os1 atom, and the carbon atoms of the $C_60$ ligand bonded to the metal centers have undergone orbital rearrangement from $\mu_3-\eta^1\eta^2\eta^1-C_{60}$ in 2 to $\mu_3-\eta^1\eta^1\eta^2-C_{60}$ in 4 upon coordination of $PPh_3$. However, the smaller $PMe_3$ ligand merely substitutes an axial CO of Os2 atom without changing the $C_{60}$ bonding mode.

서지기타정보

서지기타정보
청구기호 {MCH 02029
형태사항 v, 45 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-ik Choi
지도교수의 한글표기 : 박준택
지도교수의 영문표기 : Joon-Taik Park
학위논문 학위논문(석사) - 한국과학기술원 : 화학과,
서지주기 참고문헌 : p. 41-43
주제 C$_{60}$-트리오스뮴 클러스터
금속-C$_{60}$ ${\sigma}$-화합물
C$_{60}$-Triosmium Cluster
metal-C$_{60}$ ${\sigma}$-complex
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