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Complexes of TaOCl3 and TaSCl3 with Neutral N- and O-donor ligands - synthesis, properties and comparison with the niobium analogues

Complexes of TaOCl3 and TaSCl3 with Neutral N- and O-donor ligands - synthesis, properties and comparison with the niobium analogues
Complexes of TaOCl3 and TaSCl3 with Neutral N- and O-donor ligands - synthesis, properties and comparison with the niobium analogues
The white complexes, [TaOCl3(OPPh3)2], [TaOCl3(L-L)] (L-L = 1,10-phenanthroline, 2,2’-bipyridyl, Ph2P(O)CH2P(O)Ph2, Ph2P(O)CH2CH2P(O)Ph2 and o-C6H4(P(O)Ph2)2), have been prepared from TaCl5, O(SiMe3)2 and the ligands in anhydrous CH2Cl2 solution. The corresponding yellow [TaSCl3(OPPh3)2] and [TaSCl3(L-L)] were made similarly using S(SiMe3)2. The complexes have been characterised by microanalysis, IR and NMR (1H, 31P{1H}) spectroscopy. X-ray crystal structures have been obtained for [TaOCl3(1,10-phen)], [TaSCl3(1,10-phen)], [TaOCl3{o-C6H4(P(O)Ph2)2}], [TaSCl3(OPPh3)2], [TaSCl3{Ph2P(O)CH2CH2P(O)Ph2}] and [TaSCl3(MeCN)2], which all contain mer-chlorines and with the neutral ligands trans to O/Cl or S/Cl. The structure of the Ta(V) dimer [Cl2S(1,10-phen)Ta(µ-O)Ta(1,10-phen)SCl2], formed by trace hydrolysis, is also reported. Comparisons between the complexes of TaOCl3 and TaSCl3 and their niobium analogues are discussed.
tantalum oxide trichloride, tantalum sulfide trichloride, phosphine oxide, 2,2’-bipyridyl, 1,10-phenanthroline
0277-5387
1-10
Bannister, Robert D.
4dd3eb2a-5ba7-46de-9277-8dd7e8e39b74
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Bannister, Robert D.
4dd3eb2a-5ba7-46de-9277-8dd7e8e39b74
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7

Bannister, Robert D., Levason, William, Light, Mark E., Reid, Gillian and Zhang, Wenjian (2019) Complexes of TaOCl3 and TaSCl3 with Neutral N- and O-donor ligands - synthesis, properties and comparison with the niobium analogues. Polyhedron, 167, 1-10. (doi:10.1016/j.poly.2019.03.055).

Record type: Article

Abstract

The white complexes, [TaOCl3(OPPh3)2], [TaOCl3(L-L)] (L-L = 1,10-phenanthroline, 2,2’-bipyridyl, Ph2P(O)CH2P(O)Ph2, Ph2P(O)CH2CH2P(O)Ph2 and o-C6H4(P(O)Ph2)2), have been prepared from TaCl5, O(SiMe3)2 and the ligands in anhydrous CH2Cl2 solution. The corresponding yellow [TaSCl3(OPPh3)2] and [TaSCl3(L-L)] were made similarly using S(SiMe3)2. The complexes have been characterised by microanalysis, IR and NMR (1H, 31P{1H}) spectroscopy. X-ray crystal structures have been obtained for [TaOCl3(1,10-phen)], [TaSCl3(1,10-phen)], [TaOCl3{o-C6H4(P(O)Ph2)2}], [TaSCl3(OPPh3)2], [TaSCl3{Ph2P(O)CH2CH2P(O)Ph2}] and [TaSCl3(MeCN)2], which all contain mer-chlorines and with the neutral ligands trans to O/Cl or S/Cl. The structure of the Ta(V) dimer [Cl2S(1,10-phen)Ta(µ-O)Ta(1,10-phen)SCl2], formed by trace hydrolysis, is also reported. Comparisons between the complexes of TaOCl3 and TaSCl3 and their niobium analogues are discussed.

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Accepted/In Press date: 27 March 2019
e-pub ahead of print date: 6 April 2019
Published date: 15 July 2019
Keywords: tantalum oxide trichloride, tantalum sulfide trichloride, phosphine oxide, 2,2’-bipyridyl, 1,10-phenanthroline

Identifiers

Local EPrints ID: 430189
URI: https://eprints.soton.ac.uk/id/eprint/430189
ISSN: 0277-5387
PURE UUID: fd1d39de-335d-4511-83d1-da1fd82247e1
ORCID for William Levason: ORCID iD orcid.org/0000-0003-3540-0971
ORCID for Mark E. Light: ORCID iD orcid.org/0000-0002-0585-0843
ORCID for Gillian Reid: ORCID iD orcid.org/0000-0001-5349-3468

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Date deposited: 16 Apr 2019 16:30
Last modified: 03 May 2019 00:37

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