[Sc2(μ-OH)2(H2O)6(NO3)2](NO3)2: aqueous synthesis and characterization

Wei Wang; I-Ya Chang; Lev Zakharov; Paul Ha-Yeon Cheong; Douglas A Keszler

doi:10.1021/ic301814z

[Sc2(μ-OH)2(H2O)6(NO3)2](NO3)2: aqueous synthesis and characterization

Inorg Chem. 2013 Feb 18;52(4):1807-11. doi: 10.1021/ic301814z. Epub 2013 Jan 25.

Authors

Wei Wang¹, I-Ya Chang, Lev Zakharov, Paul Ha-Yeon Cheong, Douglas A Keszler

Affiliation

¹ Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-4003, United States.

PMID: 23350751
DOI: 10.1021/ic301814z

Abstract

[Sc(2)(μ-OH)(2)(H(2)O)(6)(NO(3))(2)](NO(3))(2) has been synthesized from an aqueous scandium nitrate solution by using zinc powder as a reducing agent for nitric acid, which drives an increase in pH and forces the condensation of aqua scandium cations. This preparative route readily produces gram-scale samples with yields near 65%. A single-crystal X-ray diffraction study reveals a structure characterized by a hydroxo-bridged Sc dimer. The FTIR spectrum of the compound has been modeled via ab initio computations, allowing the identification of signature IR peaks. Some initial observations on the thermal transformation of the compound to Sc(2)O(3) are also reported.