Two hybrid polyoxometalates constructed from Preyssler P5W30 clusters and Schiff base exhibiting interesting third-order NLO properties

Two Preyssler P5W30-based compounds: [Mn(H2O)2(DAPSC)]2{[Na3(H2O)2Mn0.5(H2O)4][Mn(H2O)(DAPSC)]2[H3P5W30O110]}·7.5H2O (1) and [Co(H2O)2(DAPSC)]{[Co(H2O)2(DAPSC)][Na1.5(H2O)2]}{[Na0.5(H2O)2Co0.5(H2O)4][Co(H2O)(DAPSC)]2[H4P5W30O110]}·6H2O (2) modified by Schiff base 2,6-diacetylpyridine bis(semicarbazo...

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Bibliographic Details
Published inRSC advances Vol. 7; no. 87; pp. 55427 - 55433
Main Authors Shi, Jie, Yao, Xiong, Zhou, MengJie, Chen, Lu, Xu, Yan
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 01.01.2017
Subjects
Crystal structure
Imines
Infrared spectroscopy
Polyoxometallates
Single crystals
Structural analysis
Water chemistry
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Summary:Two Preyssler P5W30-based compounds: [Mn(H2O)2(DAPSC)]2{[Na3(H2O)2Mn0.5(H2O)4][Mn(H2O)(DAPSC)]2[H3P5W30O110]}·7.5H2O (1) and [Co(H2O)2(DAPSC)]{[Co(H2O)2(DAPSC)][Na1.5(H2O)2]}{[Na0.5(H2O)2Co0.5(H2O)4][Co(H2O)(DAPSC)]2[H4P5W30O110]}·6H2O (2) modified by Schiff base 2,6-diacetylpyridine bis(semicarbazone) (DAPSC) and transition metal (TM) ions have been successfully isolated and structurally characterized by IR spectroscopy, PXRD, and single-crystal XRD. Structural analysis reveals that compound 1 is composed of a {[Na3(H2O)2Mn0.5(H2O)4][Mn(H2O)(DAPSC)]2[H3P5W30O110]}4− architecture (Section A), two isolated [Mn(H2O)2(DAPSC)]2+ groups (Section B), and seven and a half lattice water molecules. Compounds 1–2 represent the first Preyssler-type compounds modified by Schiff base and TM ions. Additionally, the electrocatalytic and the third-order NLO properties have been investigated.
ISSN:2046-2069
DOI:10.1039/c7ra12165b