Four new zinc(II) diphosphonates obtained via an ionothermal route: crystal structures and phase transformation behaviour
authors Zhang, L; Li, SY; Liu, L; Dong, JX; Lin, Z
nationality International
journal CRYSTENGCOMM
keywords METAL-ORGANIC FRAMEWORKS; POWDER DIFFRACTION DATA; HYBRID OPEN-FRAMEWORKS; HYDROTHERMAL SYNTHESIS; IONIC LIQUIDS; TEMPLATE
abstract Four new crystalline zinc diphosphonates, Zn-2(xbp) (I), Zn-2(H2O)(2)(xbp)(II), Na2Zn3(H2O)(2)(xbp)(2) (III) and NaZn(H(2)xbp)(0.5)n(xbp)(0.5) . 1.5H(2)O (IV) were ionothermally synthesized from tetraethyl-p-xylylenebisphosphonate (Texbp) and Zn(OAc)(2) in a deep eutectic solvent of oxalic acid and tetramethylammonium chloride. Their structures were determined by single-crystal X-ray diffraction and had a similar characteristic of inorganic layers pillared by organic parts of ligands on the whole. The introduction of sodium ions leads to two Na-containing zinc diphosphonates (III and IV), wherein the sodium ions adopt NaO4 tetrahedra or NaO5 square bipyramids in the inorganic layers. Interestingly, compound IV could completely convert to sodium-free compound II after soaking in water, following a process from the disintegration of the single crystal to in situ growth of another crystal. The phase transformation process was illustrated by using powder XRD, SEM, and ICP elemental analysis technologies. This work also demonstrates the structural diversity in an ionothermal reaction and the potential for preparing novel solids that are sensitive to hydrolysis in the presence of excess water.
publisher ROYAL SOC CHEMISTRY
issn 1466-8033
year published 2017
volume 19
issue 18
beginning page 2500
ending page 2508
digital object identifier (doi) 10.1039/c7ce00400a
web of science category Chemistry, Multidisciplinary; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000401015000008
  ciceco authors
  impact metrics
times cited (wos core): 0
journal impact factor (jcr 2016): 3.474
5 year journal impact factor (jcr 2016): 3.448
category normalized journal impact factor percentile (jcr 2016): 76.738
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