Synthesis and crystal structure of nickel(Ⅱ) and zinc(Ⅱ) complexes with 2,4-bis(3,5-dimethylpyrazol-1-yl)-6-methoxyl-1,3,5-triazine |
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引用本文: | 杨迟
,WONGWing-Tak
,崔英德
,杨燕生.Synthesis and crystal structure of nickel(Ⅱ) and zinc(Ⅱ) complexes with 2,4-bis(3,5-dimethylpyrazol-1-yl)-6-methoxyl-1,3,5-triazine[J].中国科学B辑(英文版),2001(1). |
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作者姓名: | 杨迟 WONGWing-Tak 崔英德 杨燕生 |
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作者单位: | YANG Chi WONG Wing-Tak,CUI Yingde& YANG YanshengDepartment of Chemical Engineering,Guangdong University of Technology,Guangzhou 510090,China;Department of Chemistry,University of Hong Kong,Hong Kong,China;Department of Chemistry,Zhongshan University,Guangzhou 510275,China |
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基金项目: | the National Natural Science Foundation of China (Grant No. 29671034) and Natural Science Foundation of Guangdong Province (Grant Nos. 990128,974174). |
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摘 要: | 2,4-Bis(3,5-dimethylpyrazol-1-yl)-6-methoxyl-1,3,5-triazine(bpt) has been synthesized by using a new, simple and general method with high yields. Reactions of bpt with Ni(CIO4)2 · 6H2O and Zn(CIO4)2 · 6H2O in methanol gave mononuclear complex Ni(bpt)2] · (CIO4)2 · H2O and ternary complex Zn(mpt)2(dmp)](CIO4)2 respectively, where mpt (2,4-dimethoxy-6-(3,5-dimethyl-pyrazol-1-yl)-1,3,5-triazine) and dmp(3,5-dimethylpyrazole) are the alcoholysis products of bpt in the presence of Zn2+ ion. A possible mechanism for this catalytic reaction was proposed. X-ray crystal structure for ligand bpt, Ni and Zn complexes are reported. The protonated form of the ligand bpt crystallizes as its perchlorate salt including one molecule of water, Hbpt · H2O · CIO4]. The proton is located on one pyrazole N-atom. Hbpt ?H2O ?CIO4], in which Hbpt]+ is in cis-cis conformation, are packed in slipped stacks of approximately parallel layers. The π-π overlap interactions between the non-protonized pyrazoles of the adjace
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