Crystal Structure of Mixed Crystals of the Tetra(n-butyl)ammonium Salts of cis-Tetrafluorophthalocyaninato(2−)tantalate(V) and cis-Trifluorophthalocyaninato(2−)tantalate(IV) |
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Authors: | Karsten Schweiger Heiner Hückstdt Heiner Homborg |
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Institution: | Karsten Schweiger,Heiner Hückstädt,Heiner Homborg |
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Abstract: | cis-Trichlorophthalocyaninato(2?)tantalate(V) reacts with excess tetra(n-butyl)ammonium fluoride trihydrate yielding mixed crystals of the tetra(n-butyl)ammonium salts of cis-tetrafluorophthalocyaninato(2?)tantalate(V) and cis-trifluorophthalocyaninato(2?)tantalate(IV) in the ratio five to four. These crystallize in the monoclinic space group P21/ n with cell parameters: a = 13.368(2) Å, b = 13.787(2) Å, c = 23.069(3) Å, β = 93.35(1)°, Z = 4. Tav is octacoordinated with four F atoms and four Niso atoms in an antiprismatic cis-arrangement. The Tav-F distance varies from 1.919(7) to 1.966(4) Å. TaIV is heptacoordinated with three F atoms in a cis-arrangement. The TaIV-F distance varies from 1.74(1) to 1.966(4) Å. The Ta atom is located out of the centre of the N4 plane towards the F atoms by 1.234(3) Å. The Ta–N distances range from 2.261(6) to 2.310(6) Å. |
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Keywords: | Phthalocyaninates tantalum compounds crystal structure |
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