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  • 02월 28일 19시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제111회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fe(III) Complexes Using Bidentate Two Type of Tetrazole Ligand For Selective binding with Metal

2013년 2월 27일 20시 46분 49초
INOR.P-272 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 17일 (수요일) 16:00~19:00
저자 및
박가현, 고민정, 이준승
전남대학교 화학과, Korea
The syntheses, characterizations and alkali metal recognition studies of iron complexes containing tetrazole ligands, which form high dimensional coordination polymers in the solid status, are investigated. From the reaction of iron(III) perchlorate, {5-(2-hydroxy) phenyl}tetrazole (LH2) and 2,2’-bipyrimidine(bpym) in H2O, high dimensional mixed metal coordination polymers, [Li3(bpym)1.5FeL3(H2O)6]n (1a), [Na3(bpym)1.5FeL3(H2O)7] n (2a), [K3(bpym)FeL3(H2O)7]n (3a) were synthesized with high yield and their solid structure were determined from X-ray diffraction studies. In all three structure, dual-tridentate iron anion fragment (FeL33-) was observed. As the ion sizes of alkali metals increased, more strong binding between alkali metal ion and iron fragment were observed. Because iron fragment has outstanding coordination ability, extremely short Fe - K distance, which is most short distance among reported in literature, was observed in complex 3a. When bpym was excluded in the reaction, 0-D [Li3FeL3(H2O)3] (1b), 2-D [Na3FeL3(H2O)7] (2b) and [K3FeL3(H2O)7] (3b) were synthesized and coordination between alkali metal ion and iron fragment (FeL33-) was stronger than bpym contained species. In particular, due to lack of binding sites, potassium binds to TzOH ligands with σ and π character in complex 3b. {2-(1-hydroxy-2-dimethylethyl)-5-(2-hydroxy) phenyl}tetrazole is tridentate ligand like scorpionates. we synthesized same method of using LH2 ligand but {2-(1-hydroxy-2-dimethylethyl)-5-(2-hydroxy) phenyl}tetrazole could not observe alkali metal in iron complexes.