Tetraaqua(1,10-phenanthroline-κ²N,N′)manganese(II) sulfate dihydrate

Abstract

The title compound, [Mn(C(12)H(8)N(2))(H(2)O)(4)]SO(4).2H(2)O, was obtained unexpectedly as a by-product from the reaction of sodium maleate, 1,10-phenanthroline (phen) and manganese sulfate tetrahydrate. The Mn atom is coordinated by the two N atoms of the phen ligand and four water O atoms in a highly distorted octahedral geometry, with Mn[bond]O distances in the range 2.155 (2)-2.203 (2) A and Mn[bond]N distances of 2.254 (2) and 2.272 (3) A. Extensive hydrogen-bonding interactions involving the water molecules and sulfate anions, and stacking interactions involving the phen rings, are observed in the crystal structure.

Aqua(dipicolinato-κ3O2,N,O6)(1,10-phenanthroline-κ2N,N′)manganese(II) monohydrate

“…The octahedral sphere on the Mn centre is severely distorted because of the chelation of the two rigid planar ligands, i.e. phen and dpc ( Ma et al, 2002], and the N1ÐMnÐN2 phen chelate angle of 73.50 1is as expected for Mn complexes (Drew et al, 1989;McCann et al, 1997;Ramalakshmi et al, 1999;Wang et al, 2000;Deng et al, 2000).…”

The role of nano-sized manganese oxides in the oxygen-evolution reactions by manganese complexes: towards a complete picture

“…Complexes 1, 34 2, 35 3, 36 4, 37 5, 38 9, 39 10, 40 11, 41 12, 41 13, 40,42 14 43 and 16 44 were synthesized by previously reported methods (for details see ESI ‡).…”