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Title: Conformational diversity of flexible ligand in metal-organic frameworks controlled by size-matching mixed ligands

Abstract

Hydrothermal reactions of N-auxiliary flexible exo-bidentate ligand 1,3-bis(4-pyridyl)propane (bpp) and carboxylates ligands naphthalene-2,6-dicarboxylic acid (2,6-H{sub 2}ndc) or 4,4′-(hydroxymethylene)dibenzoic acid (H{sub 2}hmdb), in the presence of cadmium(II) salts have given rise to two novel metal-organic frameworks based on flexible ligands (FL-MOFs), namely, [Cd{sub 2}(2,6-ndc){sub 2}(bpp)(DMF)]·2DMF (1) and [Cd{sub 3}(hmdb){sub 3}(bpp)]·2DMF·2EtOH (2) (DMF=N,N-Dimethylformamide). Single-crystal X-ray diffraction analyses revealed that compound 1 exhibits a three-dimensional self-penetrating 6-connected framework based on dinuclear cluster second building unit. Compound 2 displays an infinite three-dimensional ‘Lucky Clover’ shape (2,10)-connected network based on the trinuclear cluster and V-shaped organic linkers. The flexible bpp ligand displays different conformations in 1 and 2, which are successfully controlled by size-matching mixed ligands during the self-assembly process. - Graphical abstract: Compound 1 exhibits a 3D self-penetrating 6-connected framework based on dinuclear cluster, and 2 displays an infinite 3D ‘Lucky Clover’ shape (2,10)-connected network based on the trinuclear cluster. The flexible 1,3-bis(4-pyridyl)propane ligand displays different conformations in 1 and 2, which successfully controlled by size-matching mixed ligands during the self-assembly process.

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
22573965
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 232; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CADMIUM; DICARBOXYLIC ACIDS; HYDROTHERMAL SYNTHESIS; LIGANDS; MONOCRYSTALS; NAPHTHALENE; ORGANOMETALLIC COMPOUNDS; PROPANE; SALTS; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Hua, Xiu-Ni, Qin, Lan, Yan, Xiao-Zhi, Yu, Lei, Xie, Yi-Xin, and Han, Lei. Conformational diversity of flexible ligand in metal-organic frameworks controlled by size-matching mixed ligands. United States: N. p., 2015. Web. doi:10.1016/J.JSSC.2015.09.014.
Hua, Xiu-Ni, Qin, Lan, Yan, Xiao-Zhi, Yu, Lei, Xie, Yi-Xin, & Han, Lei. Conformational diversity of flexible ligand in metal-organic frameworks controlled by size-matching mixed ligands. United States. doi:10.1016/J.JSSC.2015.09.014.
Hua, Xiu-Ni, Qin, Lan, Yan, Xiao-Zhi, Yu, Lei, Xie, Yi-Xin, and Han, Lei. Tue . "Conformational diversity of flexible ligand in metal-organic frameworks controlled by size-matching mixed ligands". United States. doi:10.1016/J.JSSC.2015.09.014.
@article{osti_22573965,
title = {Conformational diversity of flexible ligand in metal-organic frameworks controlled by size-matching mixed ligands},
author = {Hua, Xiu-Ni and Qin, Lan and Yan, Xiao-Zhi and Yu, Lei and Xie, Yi-Xin and Han, Lei},
abstractNote = {Hydrothermal reactions of N-auxiliary flexible exo-bidentate ligand 1,3-bis(4-pyridyl)propane (bpp) and carboxylates ligands naphthalene-2,6-dicarboxylic acid (2,6-H{sub 2}ndc) or 4,4′-(hydroxymethylene)dibenzoic acid (H{sub 2}hmdb), in the presence of cadmium(II) salts have given rise to two novel metal-organic frameworks based on flexible ligands (FL-MOFs), namely, [Cd{sub 2}(2,6-ndc){sub 2}(bpp)(DMF)]·2DMF (1) and [Cd{sub 3}(hmdb){sub 3}(bpp)]·2DMF·2EtOH (2) (DMF=N,N-Dimethylformamide). Single-crystal X-ray diffraction analyses revealed that compound 1 exhibits a three-dimensional self-penetrating 6-connected framework based on dinuclear cluster second building unit. Compound 2 displays an infinite three-dimensional ‘Lucky Clover’ shape (2,10)-connected network based on the trinuclear cluster and V-shaped organic linkers. The flexible bpp ligand displays different conformations in 1 and 2, which are successfully controlled by size-matching mixed ligands during the self-assembly process. - Graphical abstract: Compound 1 exhibits a 3D self-penetrating 6-connected framework based on dinuclear cluster, and 2 displays an infinite 3D ‘Lucky Clover’ shape (2,10)-connected network based on the trinuclear cluster. The flexible 1,3-bis(4-pyridyl)propane ligand displays different conformations in 1 and 2, which successfully controlled by size-matching mixed ligands during the self-assembly process.},
doi = {10.1016/J.JSSC.2015.09.014},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 232,
place = {United States},
year = {2015},
month = {12}
}