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Group 3 complexes incorporating (furyl)-substituted disilazide ligands
journal contribution
posted on 2023-06-08, 09:08 authored by Lloyd T J Evans, Martyn P Coles, Geoff Cloke, Peter B HitchcockA series of mono- and bis-amide scandium and yttrium compounds incorporating the furyl-substituted disilazide ligand, [N{SiMe2R}2] {i} (where R = 2-methylfuryl) have been synthesized. The compounds Sc{i}Cl2 (1), Sc{i}(CH2SiMe3)2 (2) and Sc{i}(OAr)2 (3) were made from suitable scandium starting materials employing either a salt metathesis protocol with Li{i} or via protonolysis of ScC bonds by the neutral amine H{i}. The thermally unstable bis-alkyl yttrium compound, Y{i}(CH2SiMe3)2 was isolated as the bis-adduct (4) and the bis-aryloxide Y{i}(OAr)2 (5) was synthesized by elimination of LiOAr from Y(OAr)3. The bis-amide complex Y{i}2Cl (6) and conversion to a rare example of an yttrium benzyl compound Y{i}2(CH2Ph) (7) are described. The yttrium cation, [Y{i}2]+, was synthesized by benzyl abstraction from 7 using B(C6F5)3. Structural characterization of representative examples show variation in the coordination modes for amide ligand {i}, differing primarily in the number of furyl groups that coordinate to the metal, with examples in which zero, one or two MOfuryl bonds are present. Preliminary investigation in two areas of catalysis are presented.
History
Publication status
- Published
Journal
Inorganica Chimica ActaISSN
0020-1693Publisher
ElsevierExternal DOI
Issue
6Volume
363Page range
1114-1125Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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