Kaydı eposta ile gönder: 1,10-Phenanthrolin-1-ium nitrate–aqua­bis­(4-hydroxy­benzoato-κ(2) O,O′)(nitrato-κ(2) O,O′)(1,10-phenanthroline-κ(2) N,N′)erbium(III)–1,10-phenanthroline–water (1/1/0.5/2)