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Isomeric zinc(II) triazolate frameworks with 3-connected networks: syntheses, structures, and sorption properties.
Zhu, Ai-Xin; Lin, Jian-Bin; Zhang, Jie-Peng; Chen, Xiao-Ming.
Afiliação
  • Zhu AX; MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
Inorg Chem ; 48(8): 3882-9, 2009 Apr 20.
Article em En | MEDLINE | ID: mdl-19326894
ABSTRACT
Two pairs of supramolecular isomers based on ternary zinc(II)/triazolate/X (triazolate = 3,5-dimethyl-1,2,4-triazolate (Hdmtz), X = HCOO(-), F(-)) metal azolate frameworks, namely, [Zn(dmtz)(HCOO)] x H(2)O (MAF-X3, 1a), [Zn(dmtz)(HCOO)] x (1/6Me(2)NH)(1/4H(2)O) (MAF-X4, 1b), [Zn(dmtz)F] (MAF-X5, 2a), and [Zn(dmtz)F] (MAF-X6, 2b), have been synthesized via variations of the reaction conditions. The 3-connected Zn(dmtz) networks in 1a, 1b, 2a, and 2b can be described as rarely observed 4.8(2), 4.12(2), (8,3)-b, and 8(2).10-a, respectively. Besides the mu(3)-dmtz, tetrahedral and trigonal-bipyramidal/square-pyramidal coordination of the Zn ions are accomplished by monodentate formate and mu-F, respectively. While 1a and 2b are nonporous structures, 1b and 2a exhibits 1D nanotubular hydrophilic (d 3.2 A) and hydrophobic (d 3.6 A) channels, respectively. Thermogravimetric analysis shows that the stabilities of 2a and 2b are much better than those of 1a and 1b, which may be ascribed to different coordination numbers of zinc atoms. Moreover, 1b and 2a with different pore properties show selective sorption behavior.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Organometálicos / Triazóis / Zinco Idioma: En Ano de publicação: 2009 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Organometálicos / Triazóis / Zinco Idioma: En Ano de publicação: 2009 Tipo de documento: Article