abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 New Ni(II), Zn(II) and Co(II) Heptameric Cluster Systems from Dialdehyde

등록일
2018년 2월 2일 14시 31분 16초
접수번호
3557
발표코드
INOR.P-49 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
Ume Farwa, Junseong Lee*
Department of Chemistry, Chonnam National University, Korea
We report the three polymetallic heptameric complexes [Ni7L63-OH)6].(ClO4)2 (1), [Zn7L63-OCH3)6].(ClO4)2 (2) and [Co7L63-OH)6]. (ClO4)2, (3), where L=4-tert-Butyl-2,6-diformylphenol. These heptametallic complexes are characterized by IR, NMR (for 3), EA, ESI-MS and X-ray single crystal diffraction. Due to usefulness in gas storage, catalysis, anion sensing recognition and drug delivery, cluster complexes are of highest interest these days. By the right choice of ligand polymetallic supermolecules can be synthesized which find their application as single molecular magnetic (SMM). By treatment of dialdehyde with metal perchlorate salts of Ni, Zn, and Co in the presence of strong base NaOH at elevated temperature using methanol as solvent, rare heptametallic clusters were obtained. The synthesis of these disc-shaped heptameric complexes highly depends on the factors including ligand to metal ratios, temperature and the types of base used. These complexes are only obtained in the presence of a strong base like sodium hydroxide. To validate the synthetic approach, we used a weak base such triethylamine which didn't result in the formation of heptamer complexes. The nature of the ligand having unidirectional coordination sides resulted in the unique arrangement of the metal atoms in the heptameric complexes. The X-ray structural analysis revealed that cores of these crystals are hexagonal shape of MII ions which surround the central metal ion bridged by µ3-OH. The peripheral metal atoms are surrounded by six ligand molecules.

상단으로