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Diphosphinoazine Rhodium(III) and Iridium(III) Octahedral Complexes
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SYSNO ASEP 0335772 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Diphosphinoazine Rhodium(III) and Iridium(III) Octahedral Complexes Title Oktaedrické difosfinoazinové komplexy rhodia(III) a iridia(III) Author(s) Pošta, Martin (UCHP-M)
Čermák, Jan (UCHP-M) RID, ORCID, SAI
Vojtíšek, P. (CZ)
Sýkora, Jan (UCHP-M) RID, ORCID, SAI
Císařová, I. (CZ)Source Title Inorganica chimica acta. - : Elsevier - ISSN 0020-1693
Roč. 362, č. 1 (2009), s. 208-216Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords polydentate ligands ; diphosphinoazines ; hemilabile ligands Subject RIV CA - Inorganic Chemistry R&D Projects GA203/01/0554 GA ČR - Czech Science Foundation (CSF) GA203/06/0738 GA ČR - Czech Science Foundation (CSF) LC06070 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000261274400030 DOI 10.1016/j.ica.2008.03.080 Annotation Rhodium(III) and iridium(III) octahedral complexes of general formula [MCl3{R2PCH2C(But)=NN=C(But)CH2PR2}] (M = Rh, Ir; R = Ph, c-C6H11, Pri, But) were prepared either from the corresponding diphosphinoazines and RhCl3 • 3H2O or by oxidation of previously reported bridging complexes [{MCl(1,2-h:5,6-h-CH=CHCH2CH2CH=CHCH2CH2 )}2{m-R2PCH2C(But)=NN= C(But) CH2R2}] with chlorine-containing solvents. Depending on steric properties of the ligands, complexes with facial or meridional configuration were obtained. Crystal and molecular structures of four complexes were determined by X-ray diffraction. Hemilability of ligand in the complex fac-[RhCl3{(C6H11)2PCH2C(But)=NN=C(But)CH2P(C6H11)2}] consisting in reversible decoordination of the phosphine donor group in the six-membered ring was observed. Variable temperature 31P NMR measurement and subsequent simulation gave a value of concentration of the partially decoordinated species about 1 mol % and a rate of exchange approximately 100 s-1. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2010
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