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Crystal structures of the penta- and hexa-hydrate of thulium nitrate.

ABSTRACT: Tm(NO₃)₃·5H₂O and Tm(NO₃)₃·6H₂O, or more precisely [Tm(NO₃)₃(H₂O)₄]·H₂O and [Tm(NO₃)₃(H₂O)₄]·2H₂O, respectively, have been obtained from a concentrated solution of Tm₂O₃ in HNO₃. The crystal structures of the two hydrates show strong similarities as both crystallize in space group P with all atoms at general positions and contain neutral, mol-ecular [Tm(NO₃)₃(H₂O)₄] complexes, i.e. ten-coordinated Tm^III cations with three nitrate anions as bidentate ligands and four coordinating water mol-ecules, and one or two additional crystal water mol-ecules, respectively. All building units are connected by medium-strong to weak O-H?O hydrogen bonds. Tm(NO₃)₃·6H₂O represents the maximally hydrated thulium nitrate as well as the heaviest rare earth nitrate hexa-hydrate known to date.

SUBMITTER: Klein W

PROVIDER: S-EPMC7784656 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Crystal structures of the penta- and hexa-hydrate of thulium nitrate.

Klein Wilhelm W

Acta crystallographica. Section E, Crystallographic communications 20201124 Pt 12

Tm(NO3)3·5H2O and Tm(NO3)3·6H2O, or more precisely [Tm(NO3)3(H2O)4]·H2O and [Tm(NO3)3(H2O)4]·2H2O, respectively, have been obtained from a concentrated solution of Tm2O3 in HNO3. The crystal structures of the two hydrates show strong similarities as both crystallize in space group P ...[more]

PMID: 33520270

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