Two Compounds Constructed from Bimolybdenum-Capped Sandwich-Type Tetra-Ni-molybdogermanate and N‑Donor Multidentate Ligand

Two organic–inorganic hybrid bimolybdenum-capped tetra-NiII sandwich-type molybdogermanates, namely, (H2L)4[Ni4(H2O)2­{B-α-GeMo9O34 (MoO2)}2]·6H2O (1), [Ni2(HL)4(H2O)2]­[Ni4(H2O)2­{B-α-GeMo9O34(MoO2)}2]·12H2O (2), L = 2,4,5-tri­(4-pyridyl)­imidazole, were prepared with hydrothermal synthesis method...

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Bibliographic Details
Published in:Inorganic chemistry 2015-08, Vol.54 (15), p.7165-7170
Main Authors: Zhou, Shi, Liu, Bo, Shi, Tian, Li, Xiao-Min, Chen, Ya-Guang
Format: Article
Language:English
Subjects:
Construction
Covalence
Diffraction
Hydrogen bonds
Infrared spectroscopy
Ligands
Magnetic properties
X-rays
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Summary:Two organic–inorganic hybrid bimolybdenum-capped tetra-NiII sandwich-type molybdogermanates, namely, (H2L)4[Ni4(H2O)2­{B-α-GeMo9O34 (MoO2)}2]·6H2O (1), [Ni2(HL)4(H2O)2]­[Ni4(H2O)2­{B-α-GeMo9O34(MoO2)}2]·12H2O (2), L = 2,4,5-tri­(4-pyridyl)­imidazole, were prepared with hydrothermal synthesis method and characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, thermogravimetric analysis, and single-crystal X-ray diffraction. Their magnetic properties and electrochemical properties were investigated. The results show that compounds 1 and 2 contain a new bimolybdenum-capped sandwich-type heteropolymolybdate anion, [Ni4(H2O)2­{B-α-GeMo9O34(MoO2)}2]8–. The compound 1 is a zero-dimensional supramolecular compound, and the supramolecular architecture of compound 2 is constructed from covalent layers through hydrogen bonds and π–π interaction. The two compounds both present electrocatalytic activities for the reduction of nitrite.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.5b00227