Bis-(di-meth-oxy-ethane-1κ2O, O')penta-kis-(1,1,1,3,3,3-hexa-fluoro-propan-2-olato)-2κ3O,3κ2O-μ-hy-droxido-1:3κ2O-μ3-oxido-1:2:3κ3O-magnesiumdialuminium

Matic Lozinšek; Tjaša Pavčnik; Jan Bitenc

doi:10.1107/S2414314623007162

Bis-(di-meth-oxy-ethane-1κ²O, O')penta-kis-(1,1,1,3,3,3-hexa-fluoro-propan-2-olato)-2κ³O,3κ²O-μ-hy-droxido-1:3κ²O-μ₃-oxido-1:2:3κ³O-magnesiumdialuminium

IUCrdata. 2023 Sep 8;8(Pt 9):x230716. doi: 10.1107/S2414314623007162. eCollection 2023 Sep.

Authors

Matic Lozinšek¹, Tjaša Pavčnik^{2

3}, Jan Bitenc^{2

3}

Affiliations

¹ Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
² National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
³ Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia.

Abstract

Partial hydrolysis of a sample of [Mg(dme)₃][Al(hfip)₄]₂ crystals led to the formation of the title complex, [Mg(dme)₂{HOAl(hfip)₂OAl(hfip)₃}] (dme = di-meth-oxy-ethane and hfipH = hexa-fluoro-iso-propanol) or [Mg(C₄H₁₀O₂)₂O(OH)Al₂(C₃HF₆O)₅]. The magnesium cation exhibits a distorted octa-hedral coordination with two bidentate di-meth-oxy-ethane mol-ecules and a dinuclear aluminate anion, coordinated to Mg²⁺ via oxido and hydroxido units. The anion is an oxido-bridged species, [HOAl(hfip)₂(μ-O)Al(hfip)₃]^2-, with one Al³⁺ cation tetra-hedrally coordinated by an oxido (O^2-) anion, a hydroxido anion, and two hfip groups, whereas the second Al³⁺ cation is coordinated by the oxido anion and three hfip groups.

Keywords: crystal structure; fluorinated alkoxyaluminate; hfip; magnesium battery electrolyte.