SPÍCHAL, Zdeněk and Marek NEČAS. Coordination compounds of lanthanides with polydentate phosphine oxide ligands. In VII. SEMINÁR Pokroky v anorganickej chémii. Bratislava, SK: Univerzita Komenského v Bratislave, 2008, p. 72-73. ISBN 978-80-223-2523-3.
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Basic information
Original name Coordination compounds of lanthanides with polydentate phosphine oxide ligands
Name in Czech Koordinační sloučeniny lanthanoidů s vícefunkčními fosforanovými ligandy
Name (in English) Coordination compounds of lanthanides with polydentate phosphine oxide ligands
Authors SPÍCHAL, Zdeněk (203 Czech Republic) and Marek NEČAS (203 Czech Republic, guarantor).
Edition Bratislava, SK, VII. SEMINÁR Pokroky v anorganickej chémii, p. 72-73, 2 pp. 2008.
Publisher Univerzita Komenského v Bratislave
Other information
Original language Czech
Type of outcome Proceedings paper
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher Slovakia
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/08:00024829
Organization unit Faculty of Science
ISBN 978-80-223-2523-3
Keywords in English lanthanides; coordination polymers; structure
Tags Coordination polymers, Lanthanides, structure
Tags International impact
Changed by Changed by: doc. Mgr. Marek Nečas, Ph.D., učo 18809. Changed: 7/5/2009 14:28.
Abstract
Current research on coordination chemistry is largely aimed at metal-organic frameworks (MOFs). These compounds consist of inorganic centers (transition metal atoms, lanthanides) and organic ligands and have regular one-, two- or three-dimensional structures. Such arrangements may lead to desired properties such as high thermal stability, luminescence (Eu, Tb compounds), porosity or ability to selectively catalyze reactions. Our research if focused on coordination compounds of lanthanides with bidentate and polydentate phosphine oxide ligands. Lanthanides are used as hydrated salts (nitrates and chlorides), and the most frequently used ligands are diphosphine dioxides of a Ph2P(O)-X-P(O)Ph2 general formula in which X = (CH2)n, (C5H4)2Fe, (C6H4)2O, etc. The structures of resulting coordination compounds depend on the lanthanide cation, additional anions in the coordination sphere of the cation, the length of the ligand and its flexibility. Flexible ligands adopt both chelating and bridging coordination modes, while rigid ligands act only as bridging and are more likely to form polymeric structures. We have prepared a number of chelates and 1D and 2D polymers, and discussed the relationships beween reactants and product structures. Therefore, we can now do some structural predictions regarding future syntheses.
Abstract (in English)
Current research on coordination chemistry is largely aimed at metal-organic frameworks (MOFs). These compounds consist of inorganic centers (transition metal atoms, lanthanides) and organic ligands and have regular one-, two- or three-dimensional structures. Such arrangements may lead to desired properties such as high thermal stability, luminescence (Eu, Tb compounds), porosity or ability to selectively catalyze reactions. Our research if focused on coordination compounds of lanthanides with bidentate and polydentate phosphine oxide ligands. Lanthanides are used as hydrated salts (nitrates and chlorides), and the most frequently used ligands are diphosphine dioxides of a Ph2P(O)-X-P(O)Ph2 general formula in which X = (CH2)n, (C5H4)2Fe, (C6H4)2O, etc. The structures of resulting coordination compounds depend on the lanthanide cation, additional anions in the coordination sphere of the cation, the length of the ligand and its flexibility. Flexible ligands adopt both chelating and bridging coordination modes, while rigid ligands act only as bridging and are more likely to form polymeric structures. We have prepared a number of chelates and 1D and 2D polymers, and discussed the relationships beween reactants and product structures. Therefore, we can now do some structural predictions regarding future syntheses.
Links
GA203/08/1111, research and development projectName: Syntéza a vlastnosti anorganicko-organických polymerních materiálů
Investor: Czech Science Foundation, Synthesis and properties of inorganic-organic polymeric materials
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