Rare neutral diphosphine complexes of scandium(III) and yttrium(III) halides
Rare neutral diphosphine complexes of scandium(III) and yttrium(III) halides
Reaction of Me2PCH2CH2PMe2 or o-C6H4(PMe2)2 (L-L) with a suspension of ScI3 or YI3 in MeCN solution under rigorously anhydrous and oxygen-free conditions produced the highly unusual complexes [ScI3(L-L)2], [YI3(Me2PCH2CH2PMe2)2], and [YI3{o-C6H4(PMe2)2}2MeCN]. X-ray crystal structures reveal that the scandium complexes adopt seven-coordinate, pentagonal-bipyramidal geometries with chelating diphosphines, while the eight-coordinate [YI3{o-C6H4(PMe2)2}2MeCN] is dodecahedral. The complexes were characterized by microanalysis and IR and multinuclear NMR spectroscopy. Solid-state NMR data (45Sc, 89Y, 31P) and variable-temperature solution NMR data (1H, 31P{1H}, 45Sc) are presented and compared, leading to the conclusion that the same species are present in both the solid state and CH2Cl2 solution. Attempts to prepare complexes with other scandium halides and with aryl diphosphines and o-C6H4(AsMe2)2 are briefly described.
12890-12896
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Concistre, Maria
ec95c9d4-ecb8-4c28-a464-8c3adba9e86d
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
19 December 2016
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Concistre, Maria
ec95c9d4-ecb8-4c28-a464-8c3adba9e86d
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Carravetta, Marina, Concistre, Maria, Levason, William, Reid, Gillian and Zhang, Wenjian
(2016)
Rare neutral diphosphine complexes of scandium(III) and yttrium(III) halides.
Inorganic Chemistry, 55 (24), .
(doi:10.1021/acs.inorgchem.6b02268).
Abstract
Reaction of Me2PCH2CH2PMe2 or o-C6H4(PMe2)2 (L-L) with a suspension of ScI3 or YI3 in MeCN solution under rigorously anhydrous and oxygen-free conditions produced the highly unusual complexes [ScI3(L-L)2], [YI3(Me2PCH2CH2PMe2)2], and [YI3{o-C6H4(PMe2)2}2MeCN]. X-ray crystal structures reveal that the scandium complexes adopt seven-coordinate, pentagonal-bipyramidal geometries with chelating diphosphines, while the eight-coordinate [YI3{o-C6H4(PMe2)2}2MeCN] is dodecahedral. The complexes were characterized by microanalysis and IR and multinuclear NMR spectroscopy. Solid-state NMR data (45Sc, 89Y, 31P) and variable-temperature solution NMR data (1H, 31P{1H}, 45Sc) are presented and compared, leading to the conclusion that the same species are present in both the solid state and CH2Cl2 solution. Attempts to prepare complexes with other scandium halides and with aryl diphosphines and o-C6H4(AsMe2)2 are briefly described.
UNSPECIFIED
Sc Y phosphine proof.pdf
- Accepted Manuscript
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e-pub ahead of print date: 23 November 2016
Published date: 19 December 2016
Organisations:
Organic Chemistry: SCF
Identifiers
Local EPrints ID: 403073
URI: http://eprints.soton.ac.uk/id/eprint/403073
ISSN: 0020-1669
PURE UUID: 5c60c489-dc47-46f8-97c7-fba57545a5e2
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Date deposited: 23 Nov 2016 15:28
Last modified: 22 Feb 2025 05:01
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Author:
Maria Concistre
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