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Synthesis, characterization and potentiometric studies of trans-dioxorhenium(V) complexes. X-ray crystal structure of [ReO2(tn)2]I·H2O |
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| Authors: | Carlos Kremer Eduardo Kremer Sixto Domínguez Erasmo Chinea Alfredo Mederos Alfonso Castiñeiras |
| Institution: | Cátedra de Química Inorgánica, Facultad de Química, CC 1157, Montevideo, Uruguay Departmento de Química Inorgánica, Universidad de La Laguna, 38204 La Laguna, Tenerife, Canary Islands, Spain Departmento de Química Inorgánica, Facultad de Farmicia, Universidad de Santiago de Compostela, Campus Sur-15706, Santiago de Compostela, Galicia, Spain |
| Abstract: | ReO2(PPh3)2I] has been used as starting material to prepare RevO2(tn)2]I (tn = trimethylenediamine) in high yield. The complex was characterized by elemental analysis and spectroscopic methods. The complex ReO2(en)2]I (en = 1,2-diaminoethane) was prepared analogously for comparison. The crystal structure of ReO2(tn)2]I·H2O was determined from X-ray data. It consists of a six-coordinate rhenium atom bonded to two trans-oxo groups. The amines lie in the equatorial plane, almost perpendicular to the ReO2 core. The average value for the Re---O bond is 1.76 Å, similar to that in other Re(V) dioxo complexes. The successive protonations of the oxo groups were determined for both complexes. |
| Keywords: | characterization dioxorhenium complexes trimethylenediamine crystal structure complex protonations 1 2-diaminoethane |
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