Crystal structure of bis­(2-{[1,1-bis­(hy­droxy­meth­yl)-2-oxidoeth­yl]imino­meth­yl}-6-meth­oxy­phenolato)manganese(IV) 0.39-hydrate

The title compound, [Mn(C(12)H(15)NO(5))(2)]·0.39H(2)O, is a 0.39 hydrate of the isostructural complex bis­(2-{[1,1-bis­(hy­droxy­meth­yl)-2-oxidoeth­yl]imino­meth­yl}-6-meth­oxy­phenolato)manganese(IV) that has previously been reported by Back, Oliveira, Canabarro & Iglesias [Z. Anorg. Allg. Chem. (2015), 641, 941–947], based on room-temperature data. The current structure that was determined at 100 K reveals a lengthening of the c cell parameter compared with the published one due to the incorporation of the partial occupancy water mol­ecule. The title compound crystallizes in the tetra­gonal chiral space group P4(1)2(1)2; the neutral [Mn(IV)(C(12)H(15)NO(5))(2)] mol­ecule is situated on a crystallographic C (2) axis. The overall geometry about the central manganese ion is octa­hedral with an N(2)O(4) core; each ligand acts as a meridional ONO donor. The coordination environment of Mn(IV) at 100 K displays a difference in one of the two Mn–O bond lengths, compared with the room-temperature structure. In the crystal, the neutral mol­ecules are stacked in a helical fashion along the c-axis direction.