Synthesis and characterization of the first Te(IV) organometallic complexes with azepane-1-carbodithioate
| Autor: | Patricia Martínez-Salas, Vojtech Jancik, María del Carmen Pérez-Redondo, Raymundo Cea-Olivares, Ave María Cotero-Villegas, Mónica Moya-Cabrera |
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| Rok vydání: | 2016 |
| Předmět: |
010405 organic chemistry
Chemistry Ligand Organic Chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Characterization (materials science) Inorganic Chemistry chemistry.chemical_compound Azepane Polymer chemistry Organic chemistry Tellurium |
| DOI: | 10.6084/m9.figshare.4502183.v1 |
| Popis: | We report the synthesis and spectroscopic characterization of organometallic Te(IV) complexes bearing the seven-membered azepane-1-carbodithioate ligand and four different types of tellurium(IV) heterocycles; [C4H8Te{S2C-N(CH2)6}2](2),[C8H8Te{S2C-N(CH2)6}2](3),[C4H8OTe{S2C-N(CH2)6}2](4)and [C5H10Te{S2C-N(CH2)6}2](5). Compounds 2–5, obtained in a 2:1 stoichiometric ratio, are air-stable for long periods of time, but readily decompose in solution. They have been characterized by elemental analyses, IR, FAB+–MS, and multinuclear NMR (1H, 13C, and 125Te) spectroscopy. The molecular structures of 2 and 5 were established by single-crystal X-ray diffraction studies. The geometrical arrangement around the tellurium atom can be described as a distorted trigonalbipyramid or sawhorse structure, typical for tellurium atom, where the lone pair is apparently stereochemically active, occupying an equatorial position. The coordination mode for the azepane-1-carbodithioate ligands is considered as anisobidentate. Due to the orthogonal arrangement of the dithiocarbamate groups around tellurium, it is difficult for other atoms to approach and in consequence there are not intermolecular secondary interactions. |
| Databáze: | OpenAIRE |
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