An inorganic-organic hybrid polyoxotungstogermanate based on [Ln(α-GeW11O39)2] dimer and dimethylammonium: Synthesis, crystal structure and photoluminescence property

• Published in: Journal of molecular structure Vol. 1250; p. 131686
• Main Authors: Jing, Ji-Xin, Shi, Nian, Sun, Yan-Qiong, Li, Xin-Xiong, Zheng, Shou-Tian
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.02.2022
• Subjects: Hydrothermal synthesis; Lanthanide-polyoxotungstogermanate; Organic ammonium; Photoluminescence; Hydrothermal synthesis; Lanthanide-polyoxotungstogermanate; Organic ammonium; Photoluminescence
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2021.131686

•An inorganic-organic hybrid lanthanide-polyoxotungstogermanate.•A 3D supramolecular network formed by NH···O and CH···O hydrogen bonds between the [Eu(α-GeW11O39)2]13− polyanion and dimethylammonium cations.•Strong Eu3+ characteristic emission with long decay time. A novel inorganic-organic hybrid lanthanide-polyoxotungstogermanate, [NH2(CH3)2]13[Eu(α-GeW11O39)2]·8H2O (1) is directly prepared using raw material by hydrothermal synthesis method and characterized by single-crystal X-ray diffraction, PXRD, IR, solid-state UV–visible spectra and TG analyses. Compound 1 is constructed from [Eu(α-GeW11O39)2] dimer anions and dimethylammonium cations. It is an unusual example of crystal structure containing {Eu(α-GeW11O39)2} dimer and organic ammonium without alkali metal cations. The NH···O and CH···O hydrogen bonds link the [Eu(α-GeW11O39)2]13− cluster units and the dimethylammonium cations to a 3D supramolecular network. Compound 1 exhibits Eu3+ characteristic luminescent property with decay time of 2.342 ms. [Display omitted]