Structural and spectroscopic characterization of the macrocyclic complex: [Tb(CrO{sub 4})(H{sub 2}O)(C{sub 22}H{sub 26}N{sub 6})] {center_dot}0.5(Cr{sub 2}O{sub 7}){center_dot}(H{sub 2}O)
Journal Article
·
· Journal of Chemical Crystallography
- Universita di Milano (Italy)
- Corso Stati Uniti, Padova (Italy); and others
The title complex was obtained by anion metathesis form [Tb(CH{sub 3}COO){sub 2}(C{sub 22}H{sub 26}N{sub 6})] (CH{sub 3}COO){center_dot}4H{sub 2}O and K{sub 2}CrO{sub 4} in aqueous solution. The compound crystallizes in the triclinic space group P1 with a = 8.384(2), b = 10.425(2) c = 15.752(2){angstrom}, {alpha} = 98.82(2), {beta} = 93.52(2), {gamma} = 97.22(2){degrees}, and Z = 2. The structure is ionic and consists of a (+1) complex cation balanced in a 2:1 ratio by a disordered dichromate ion. The 9-coordinate Tb(III) is linked to the six nitrogen atoms of the macrocyclic ligand L = C{sub 22}H{sub 26}N{sub 6}, as well as to a water molecule and a bidentate chelating chromate situated on opposite sides of the macrocycle. The infrared spectrum shows, in addition to the pattern of the macrocyclic ligand, the absorptions arising form the stretching modes of the bidentate chelating CrO{sub 4}{sup 2{minus}} ligand and of the Cr{sub 2}O{sub 7}{sup 2{minus}} counterion.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 513326
- Journal Information:
- Journal of Chemical Crystallography, Journal Name: Journal of Chemical Crystallography Journal Issue: 6 Vol. 25; ISSN JCCYEV; ISSN 1074-1542
- Country of Publication:
- United States
- Language:
- English
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