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Natrajan L, Pécaut J, Mazzanti M, LeBrun C. Controlled Hydrolysis of Lanthanide Complexes of the N-Donor Tripod Tris(2-pyridylmethyl)amine versus Bisligand Complex Formation. Inorg Chem 2005; 44:4756-65. [PMID: 15962984 DOI: 10.1021/ic0502224] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of the lanthanide salts LnI3(thf)4 and Ln(OTf)3 with tris(2-pyridylmethyl)amine (tpa) was studied in rigorously anhydrous conditions and in the presence of water. Under rigorously anhydrous conditions the successive formation of mono- and bis(tpa) complexes was observed on addition of 1 and 2 equiv of ligand, respectively. Addition of a third ligand equivalent did not yield additional complexes. The mono(tpa) complex [Ce(tpa)I3] (1) and the bis(tpa) complexes [Ln(tpa)2]X3 (X = I, Ln = La(III) (2), Ln = Ce(III) (3), Ln = Nd(III) (4), Ln = Lu(III) (5); X = OTf, Ln = Eu(III) (6)) were isolated under rigorously anhydrous conditions and their solid-state and solution structures determined. In the presence of water, 1H NMR spectroscopy and ES-MS show that the successive addition of 1-3 equiv of tpa to triflate or iodide salts of the lanthanides results in the formation of mono(tpa) aqua complexes followed by formation of protonated tpa and hydroxo complexes. The solid-state structures of the complexes [Eu(tpa)(H2O)2(OTf)3] (7), [Eu(tpa)(mu-OH)(OTf)2]2 (8), and [Ce(tpa)(mu-OH)(MeCN)(H2O)]2I4 (9) have been determined. The reaction of the bis(tpa) lanthanide complexes with stoichiometric amounts of water yields a facile synthetic route to a family of discrete dimeric hydroxide-bridged lanthanide complexes prepared in a controlled manner. The suggested mechanism for this reaction involves the displacement of one tpa ligand by two water molecules to form the mono(tpa) complex, which subsequently reacts with the noncoordinated tpa to form the dimeric hydroxo species.
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Affiliation(s)
- Louise Natrajan
- Laboratoire de Reconnaissance Ionique, Service de Chimie Inorganique et Biologique, CEA/DSM/Département de Recherche Fondamentale sur la Matière Condensée, CEA-Grenoble, 38054 Grenoble, Cedex 09, France
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Voskoboynikov AZ, Parshina IN, Shestakova AK, Butin KP, Beletskaya IP, Kuz'mina LG, Howard JAK. Reactivity of Lanthanide and Yttrium Hydrides and Hydrocarbyls toward Organosilicon Hydrides and Related Compounds. Organometallics 1997. [DOI: 10.1021/om970363g] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander Z. Voskoboynikov
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Inna N. Parshina
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Alla K. Shestakova
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Kim P. Butin
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Irina P. Beletskaya
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Lyudmila G. Kuz'mina
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Judith A. K. Howard
- State Research Institute of Chemistry and Technology of Organoelement Compounds, sh. Entuziastov 38, Moscow 111123, Russia, Department of Chemistry, Moscow State University, V-234, Moscow, GSP 119899, Russia, N. S. Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, 31 Leninsky ave., Moscow 117907, Russia, and Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
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