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Updated: Sep 2, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Reactivity of a mixed methyl-aminobenzyl guanidinate lutetium complex towards iPrNCNiPr, CS2 and Ph2PH
Wen Jiang1, Lijun Zhang2, Lixin Zhang1
1Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Jiangwan Campus, Fudan University, Shanghai 200438, China. lixinzh@fudan.edu.cn.
Abstract:
A heteroleptic terminal alkyl lutetium complex stabilized by a bulky guanidinato ligand, LLu(CH2C6H4NMe2-o)(Me)(THF) (1) (L = (PhCH2)2NC(NC6H3iPr2-2,6)2) has been synthesized by the treatment of LLu(CH2C6H4NMe2-o)2 with AlMe3 (1 equiv.) via an alkyl-exchange reaction in toluene/THF (4 : 1) solution and fully characterized. The difference in the activities of aminobenzyl and methyl was also proven through their selective reactivity, including complex 1 with one equivalent of DIC, CS2 and HPPh2, to afford complexes LLu[(NiPr2)2CMe](CH2C6H4NMe2-o) (2), L2Lu2[μ-η1:η2-S2CCHC6H4NMe2-o][μ-η2:η2-S2CCHC6H4NMe2-o](THF) (4), and {LLu(Me)[μ-O(CH2)4 PPh2]}2 (5), respectively. The subsequent transformations have also been investigated, obtaining complexes LLu[(NiPr2)2CMe][(NiPr2)2C CH2C6H4NMe2-o] (3), {LLu[O(CH2)4PPh2][μ-O(CH2)4PPh2]}2 (6) and dimeric lutetium phosphide {LLu[μ-O(CH2)4PPh2]}2(Me)(PPh2) (7). In addition, the guanidinate bimetallic alkynyl-bridged lutetium complex [LLu(μ-CCPh)]2(μ-η2:η2-PhC4Ph) (8) bearing the μ2-butatrienediyl group was obtained from the reaction of 1 with PhCCH (2 equiv.). The guanidinate lutetium μ-imido complex [LLu(μ-NPh)(THF)]2 (10) was also obtained in good yield by the treatment of 1 with PhNH2.
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