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Single-crystal-to-single-crystal conversions of two metal-mediated photoreactive coordination polymers based on stereoselective [2 + 2] photocycloaddition reactions

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Abstract

Two photoreactive coordination polymers {[Zn(μ-OH2)(5-Me-1,3-bdc)(2,3′-bpe)]·H2O}n (1) and {[Ag2(5-Me-1,3-Hbdc)(2,3′-bpe)2][Ag(5-Me-1,3-bdc)(2,3′-bpe)]·H2O}n (3) have been prepared based on the hydrothermal reactions between an asymmetrical olefin 1-(2-pyridyl)-2-(3-pyridyl)-ethylene (2,3′-bpe) and an auxiliary ligand 5-methyl-1,3-benzenedicarboxylic acid (5-Me-1,3-H2bdc) in the presence of Zn(NO3)2·6H2O and AgNO3, respectively. UV irradiation of these two photoreactive compounds 1 and 3 resulted in the formation of two new coordination polymers {[Zn(μ-OH2)(5-Me-1,3-bdc)(HT-bpbpcb)0.5]·H2O}n (2, HT-bpbpcb = 1,3-bis(2-pyridyl)-2,4-bis(3-pyridyl)cyclobutane) and {[Ag2(5-Me-1,3-Hbdc)(HH-bpbpcb)][Ag(5-Me-1,3-bdc)(2,3′-bpe)]·H2O}n (4, HH-bpbpcb = 1,2-bis(2-pyridyl)-3,4-bis(3-pyridyl)cyclobutane) based on stereoselective [2 + 2] photodimerization reactions through single-crystal-to-single-crystal conversions. These two photoreactions were further confirmed by 1H NMR spectroscopy and powder X-ray diffraction.

Graphical abstract: Single-crystal-to-single-crystal conversions of two metal-mediated photoreactive coordination polymers based on stereoselective [2 + 2] photocycloaddition reactions

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Publication details

The article was received on 01 Aug 2017, accepted on 24 Oct 2017 and first published on 24 Oct 2017


Article type: Paper
DOI: 10.1039/C7CE01402C
Citation: CrystEngComm, 2017, Advance Article
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    Single-crystal-to-single-crystal conversions of two metal-mediated photoreactive coordination polymers based on stereoselective [2 + 2] photocycloaddition reactions

    J. Chen, Q. Zhou, Y. Hou and D. Liu, CrystEngComm, 2017, Advance Article , DOI: 10.1039/C7CE01402C

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