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Issue 3, 2018
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Novel isomorphism of two hexagonal non-centrosymmetric hybrid crystals of M(en)3Ag2I4 (M = transition metal Mn2+ or main-group metal Mg2+; en = ethylenediamine)

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Abstract

In this study, two isomorphic hybrid crystals of iodoargentate, M(en)3Ag2I4 (M = transition metal Mn2+ (1) or main-group metal Mg2+ (2) ion), have been prepared through in situ self-assembly in DMF solution at ambient temperature and characterized by microanalysis, IR spectroscopy, thermogravimetric analysis and powder X-ray diffraction and single crystal X-ray diffraction techniques. The magnetic properties of 1 have been investigated. The crystals of 1 and 2 crystallize in the hexagonal non-centrosymmetric space group P6322 with rather similar lattice parameters. The metal complex M(en)32+ (M = Mn2+ or Mg2+) with the symmetry of D3 point group plays a crucial role in directing the formation of the three-dimensional hexagonal non-centrosymmetric framework of {Ag2I42−}. To the best of our knowledge, the hybrid Mg(en)3Ag2I4 is the first example of a main-group metal complex used as a structure directing agent for the formation of a hybrid crystal structure, and this is also the first instance where isomorphic hybrid crystals are obtained using transition and main-group metal complexes. These findings can provide a basis for broadening the utilization of metal coordination cations/anions as structure directing agents in the design and construction of novel hybrid crystal structures in more effective ways.

Graphical abstract: Novel isomorphism of two hexagonal non-centrosymmetric hybrid crystals of M(en)3Ag2I4 (M = transition metal Mn2+ or main-group metal Mg2+; en = ethylenediamine)

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Publication details

The article was received on 20 Nov 2017, accepted on 08 Dec 2017 and first published on 08 Dec 2017


Article type: Paper
DOI: 10.1039/C7CE02005H
Citation: CrystEngComm, 2018,20, 356-361
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    Novel isomorphism of two hexagonal non-centrosymmetric hybrid crystals of M(en)3Ag2I4 (M = transition metal Mn2+ or main-group metal Mg2+; en = ethylenediamine)

    X. Chen, Z. Yao, C. Xue, Z. Yang, J. Liu and X. Ren, CrystEngComm, 2018, 20, 356
    DOI: 10.1039/C7CE02005H

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