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  • 03월 03일 12시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

3D Porous Metal Organic Framework with Coordinatively Unsaturated Zn(II) Centers: Single-Crystal-to-Single-crystal Transformation on Removal of Coordinating and Guest Molecules and Gas Sorptions

등록일
2006년 3월 8일 11시 16분 31초
접수번호
1251
발표코드
28P95포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅱ>
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
천영은, 백명현
서울대학교 화학과,
A 3D metal-organic framework [Zn3(NTB)2(EtOH)2]n·4nEtOH (1) has been prepared by solvothermal reaction of Zn(NO3)2·6H2O and H3NTB (4,4’,4”-nitrilo-trisbenzonoic acid) in EtOH. X-ray structure of 1 indicates that 3D framework 1 is consisted of 1D Zn(II) chains formed of Zn3 cluster units, Zn3(-CO2)6(EtOH)2, which are linked by carboxylates of NTB3-. 1 retains the single crystallinity even when all coordinating EtOH as well as guest EtOH molecules were removed, which affords desolvated crystal [Zn3(NTB)2]n (1). X-ray structure of 1’ shows the change in the coordination environment around Zn(II) ions from trigonal bipyramidal to tetrahedral geometry on loss of coordinating EtOH molecules, which accompanies the change in the local geometry around NTB3- via the rotation of bridging carboxlyate plane with respect to the phenyl rings of NTB3-. Framework 1’ shows permanent porosity by adsorbing N2, H2, CO2, and CH4 gases. In particular, it stores H2 gas up to 1.2 wt% at 77 K and 1 atm.

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