{Bis(3,5-Di-tert-butyl-2-oxidobenzyl)[2-(N,N-dimethylamino)ethyl]amine-κ4N,N',O ,O'}zinc(II) and {bis(3-tert-butyl-5-methyl-2-oxidobenzyl)[2-(N ,N-dimethylamino)ethyl]amine-κ4N,N',O,O'}(tetrahdyrofuran)zinc(II)

Howard, RH, Bochmann, M ORCID: https://orcid.org/0000-0001-7736-5428 and Wright, JA ORCID: https://orcid.org/0000-0001-9603-1001 (2006) {Bis(3,5-Di-tert-butyl-2-oxidobenzyl)[2-(N,N-dimethylamino)ethyl]amine-κ4N,N',O ,O'}zinc(II) and {bis(3-tert-butyl-5-methyl-2-oxidobenzyl)[2-(N ,N-dimethylamino)ethyl]amine-κ4N,N',O,O'}(tetrahdyrofuran)zinc(II). Acta Crystallographica Section C, 62 (7). m293-m296. ISSN 1600-5759

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The title zinc(II) complexes, [Zn(C34H54N2O2)], (II), and [Zn(C28H42N2O2)(C4H8O)], (III), were obtained as monomeric 1:1 complexes, in contrast with the calcium complexes supported by the same ligand class. Complex (II) crystallizes with two independent mol­ecules in the asymmetric unit, which have similar geometric parameters. The donor atoms in (II) form a distorted trigonal-pyramidal arrangement around the zinc centre. Complex (III) contains a coordinated tetra­hydro­furan mol­ecule, resulting in a five-coordinate trigonal-bipyramidal arrangement around the Zn atom. The electron density provided by the coordination of this tetra­hydro­furan mol­ecule elongates the Zn-O and Zn-N bonds by approximately 0.07 and 0.10 Å, respectively, in comparison with (II). Neither (II) nor (III) is active as an [epsilon]-caprolactone polymerization catalyst. The data presented here demonstrate that Zn may bind both an ONNO ligand and an additional oxygen-based ligand. The lack of activity is thus not due to steric hinderance at the metal atom.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Synthetic Chemistry (former - to 2017)
Faculty of Science > Research Groups > Chemistry of Materials and Catalysis
Faculty of Science > Research Groups > Chemistry of Light and Energy
Faculty of Science > Research Groups > Energy Materials Laboratory
Depositing User: Rachel Smith
Date Deposited: 12 Apr 2011 13:52
Last Modified: 09 Feb 2023 10:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/29052
DOI: 10.1107/S0108270106018695

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