Zaslat záznam emailem: catena-Poly[[[bis­(methanol-κO)bis­(seleno­cyanato-κN)manganese(II)]-μ-1,2-bis­(pyridin-4-yl)eth­ene-κ(2) N:N′] 1,2-bis­(pyridin-4-yl)eth­ene mono­solvate]