Crystal structure of catena-poly[[methanoldioxidouranium(VI)]-μ-2-[5-(2-oxidophenyl)-1H-1,2,4-triazol-3-yl]acetato-κ2O:O′]
In [UO 2 L (CH 3 OH)] n , the acetate group of the 1,2,4-triazol-based ligand bridges two uranyl cations, forming a neutral zigzag chain. A solid-state LMCT transition at 463 nm is responsible for the light-red colour of the compound. In the title complex, [U(C 10 H 7 N 3 O 3 )O 2 (CH 3 OH)] n , the...
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Veröffentlicht in: | Acta crystallographica. Section E, Crystallographic communications Crystallographic communications, 2024-08, Vol.80 (Pt 8), p.852-856 |
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Sprache: | eng |
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Zusammenfassung: | In [UO
2
L
(CH
3
OH)]
n
, the acetate group of the 1,2,4-triazol-based ligand bridges two uranyl cations, forming a neutral zigzag chain. A solid-state LMCT transition at 463 nm is responsible for the light-red colour of the compound.
In the title complex, [U(C
10
H
7
N
3
O
3
)O
2
(CH
3
OH)]
n
, the U
VI
cation has a typical pentagonal–bipyramidal environment with the equatorial plane defined by one N and two O atoms of one doubly deprotonated 2-[5-(2-hydroxyphenyl)-1
H
-1,2,4-triazol-3-yl]acetic acid ligand, a carboxylate O atom of the symmetry-related ligand and the O atom of the methanol molecule [U—N/O
eq
2.256 (4)–2.504 (5) Å]. The axial positions are occupied by two oxide O atoms. The equatorial atoms are almost coplanar, with the largest deviation from the mean plane being 0.121 Å for one of the O atoms. The benzene and triazole rings of the tetradentate chelating–bridging ligand are twisted by approximately 21.6 (2)° with respect to each other. The carboxylate group of the ligand bridges two uranyl cations, forming a neutral zigzag chain reinforced by a strong O—H⋯O hydrogen bond. In the crystal, adjacent chains are linked into two-dimensional sheets parallel to the
ac
plane by C/N—H⋯N/O hydrogen bonding and π–π interactions. Further weak C—H⋯O contacts consolidate the three-dimensional supramolecular architecture. In the solid state, the compound shows a broad medium intensity LMCT transition centred around 463 nm, which is responsible for its red colour. |
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ISSN: | 2056-9890 |
DOI: | 10.1107/S2056989024006637 |