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Title: | Supramolecular salts containing the anionic [Ge(C(2)O(4))(3)](2-) complex and heteroaromatic amines |
Author: | Cunha-Silva, Luís Shi, Fa-Nian Almeida Paz, Filipe A. Hardie, Michaele J. Klinowski, Jacek Trindade, Tito Rocha, João |
Keywords: | Germanium(IV) oxalate Organic–inorganic hybrids Hydrogen bonds Crystalline structures |
Issue Date: | Jan-2009 |
Publisher: | Elsevier |
Abstract: | The crystalline compounds (Hbipy)2[Ge(C2O4)3] (1) and (Hphen)2[Ge(C2O4)3] 2(H2O) (2) [Hbipy+ is the 2,20-bipyridinium cation (C10H9N2), and Hphen+ is the 1,100-phenathrolinium cation (C12H9N2)] were isolated from mild hydrothermal syntheses and their structures were elucidated from single-crystal X-ray diffraction. The two compounds were further characterised by vibrational spectroscopy (FT-IR and FT-Raman), thermogravimetric analysis (TGA) and CHN elemental composition. Compounds 1 and 2 comprise the tris(oxalato-O,O0)germanate dianion complex, [Ge(C2O4)3]2 , which co-crystallises with Hbipy+ (in 1), or Hphen+ and water molecules (in 2). In 1, the germanium oxalate anionic complex, [Ge(C2O4)3]2 , and the Hbipy+ organic residues interact mutually via N–H O hydrogen bonding interactions, leading to supramolecular discrete hydrogen-bonded units which are further interconnected via p–p stacking. Compound 2, on the other hand, exhibits a more complex hydrogen bonding network due to the presence of the water molecules of crystallisation which, along with p–p stacking between neighbouring Hphen+ residues, mediate the crystal packing. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/6337 |
DOI: | 10.1016/j.ica.2008.02.038 |
ISSN: | 0020-1693 |
Appears in Collections: | CICECO - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Inorganica Chimica Acta 362 (2009) 263–270.pdf | 553.52 kB | Adobe PDF |
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