title: Bis(ethanamidinium) (1,10-phen-an-thro-line-2,9-dicarboxyl-ato)manganate(II) hepta-hydrate.
abstract: In the title complex, (C2H7N2)2[Mn(C14H6N2O4)2]·7H2O, the Mn(II) atom is coordinated by four N atoms and four O atoms from two 1,10-phenanthroline-2,9-dicarboxyl-ate ligands in a distorted dodeca-hedral geometry. The double negative charge is balanced by two ethanamidinium cations. A three-dimensional supra-molecular structure is formed through N-H⋯O and O-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distance = 3.553 (2) Å].
authors.affiliation: College of Science, Guang Dong Ocean University, Zhanjiang 524088, People's Republic of China.
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Miao
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Wang
authors.forename: Wen-Dong
authors.initials: WD
authors.lastname: Song