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In the title compound, [Mn(C 10 H 5 O 4 ) 2 (H 2 O) 2 ], the Mn II  atom lies on a crystallographic inversion center and is six-coordinated by two O atoms from water mol­ecules in the axial positions and four O atoms from two deprotonated coumarin-3-carb­oxy­lic acid ligands in the equatorial plane. The overall coordination geometry is slightly distorted octa­hedral. The Mn—O bond distances vary between 2.0931 (12) and 2.2315 (13) Å. O—H⋯O hydrogen bonds between the H atoms of coordinated water mol­ecules and the O atoms of the carboxyl­ate groups link the complex mol­ecules into two-dimensional layers parallel to the  ab  plane.

Diaquabis(2-oxo-2H-chromene-3-carboxylato-κ2O2,O3)manganese(II)

Diaquabis(2-oxo-2H-chromene-3-carboxylato-κ²O²,O³)manganese(II)