Chromium(V) oxide trichloride, and some pentachlorido-oxido-chromate(V) salts: structures and spectroscopic characterization
Chromium(V) oxide trichloride, and some pentachlorido-oxido-chromate(V) salts: structures and spectroscopic characterization
Crystalline CrOCl3 contains [Cl2OCr(?-Cl)2CrOCl2] molecules with two square pyramidal CrOCl4 units sharing a common edge and with the Cr–O arranged anti, a new structure type for transition metal MOX3 compounds. Crystals are monoclinic with space group P21/c, Z = 4, with a = 5.735(5), b = 13.738(7), c = 11.318(4) Å, ? = 90°, ? = 98.346(6)°, ? = 90°. Its IR and UV/Vis spectra are reported and compared with those of the C3v monomer found in the gas phase. Structures are also reported for M2[CrOCl5] (M = Cs or Rb) and show a pseudo-octahedral anion. Cs2[CrOCl5] adopts a K2PtCl6-type structure with [CrOCl5]2– ions randomly orientated, but Rb2[CrOCl5] is orthorhombic with space group Pnma with a = 13.6471(7), b = 9.9175(5), and c = 6.9562(4) Å. Rietveld refinement of the data on the rubidium salt gave Cr–O = 1.628(1), Cr–CltransO = 2.652(7), Cr–CltransCl = 2.239(8)–2.342(3) Å. Corresponding CrV oxide bromide species do not form
906-910
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Sardar, K
ab186afa-7f51-4db1-b695-2a481b36dfc7
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
2013
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Sardar, K
ab186afa-7f51-4db1-b695-2a481b36dfc7
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Hector, Andrew L., Levason, William, Light, Mark E., Reid, Gillian, Sardar, K and Zhang, Wenjian
(2013)
Chromium(V) oxide trichloride, and some pentachlorido-oxido-chromate(V) salts: structures and spectroscopic characterization.
Zeitschrift Fur Anorganische Und Allgemeine Chemie, 639 (6), .
(doi:10.1002/zaac.201300084).
Abstract
Crystalline CrOCl3 contains [Cl2OCr(?-Cl)2CrOCl2] molecules with two square pyramidal CrOCl4 units sharing a common edge and with the Cr–O arranged anti, a new structure type for transition metal MOX3 compounds. Crystals are monoclinic with space group P21/c, Z = 4, with a = 5.735(5), b = 13.738(7), c = 11.318(4) Å, ? = 90°, ? = 98.346(6)°, ? = 90°. Its IR and UV/Vis spectra are reported and compared with those of the C3v monomer found in the gas phase. Structures are also reported for M2[CrOCl5] (M = Cs or Rb) and show a pseudo-octahedral anion. Cs2[CrOCl5] adopts a K2PtCl6-type structure with [CrOCl5]2– ions randomly orientated, but Rb2[CrOCl5] is orthorhombic with space group Pnma with a = 13.6471(7), b = 9.9175(5), and c = 6.9562(4) Å. Rietveld refinement of the data on the rubidium salt gave Cr–O = 1.628(1), Cr–CltransO = 2.652(7), Cr–CltransCl = 2.239(8)–2.342(3) Å. Corresponding CrV oxide bromide species do not form
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Published date: 2013
Organisations:
Organic Chemistry: Synthesis, Catalysis and Flow
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Local EPrints ID: 360948
URI: http://eprints.soton.ac.uk/id/eprint/360948
ISSN: 0044-2313
PURE UUID: 10df81d2-58c1-4953-893b-82ac8bf34ed8
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Date deposited: 09 Jan 2014 12:54
Last modified: 15 Mar 2024 03:01
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K Sardar
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