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Rare neutral diphosphine complexes of scandium(III) and yttrium(III) halides

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.
0020-1669
12890-12896
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Concistre, Maria
c59ea2ef-d6ee-4944-ac4a-13b9df985b6e
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gill
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Concistre, Maria
c59ea2ef-d6ee-4944-ac4a-13b9df985b6e
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gill
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7

Carravetta, Marina, Concistre, Maria, Levason, William, Reid, Gill and Zhang, Wenjian (2016) Rare neutral diphosphine complexes of scandium(III) and yttrium(III) halides. Inorganic Chemistry, 55 (24), 12890-12896. (doi:10.1021/acs.inorgchem.6b02268).

Record type: Article

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.

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Submitted date: 16 November 2016
Accepted/In Press date: 23 November 2016
e-pub ahead of print date: 23 November 2016
Organisations: Organic Chemistry: SCF

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Local EPrints ID: 403073
URI: https://eprints.soton.ac.uk/id/eprint/403073
ISSN: 0020-1669
PURE UUID: 5c60c489-dc47-46f8-97c7-fba57545a5e2
ORCID for Marina Carravetta: ORCID iD orcid.org/0000-0002-6296-2104
ORCID for William Levason: ORCID iD orcid.org/0000-0003-3540-0971
ORCID for Gill Reid: ORCID iD orcid.org/0000-0001-5349-3468

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Date deposited: 23 Nov 2016 15:28
Last modified: 15 Aug 2019 05:13

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