[Mn(NO3)2(C12H8N2)]	F000 = 724
Mr = 359.16	Dx = 1.782 Mg m−3
Monoclinic, P21/n	Mo Kα radiation λ = 0.71073 Å
Hall symbol: -p 2yn	Cell parameters from 5711 reflections
a = 8.7116 (13) Å	θ = 2.1–27.1º
b = 9.1824 (11) Å	µ = 1.03 mm−1
c = 17.1183 (17) Å	T = 273 (2) K
β = 102.159 (4)º	Prism, colourless
V = 1338.6 (3) Å3	0.42 × 0.23 × 0.20 mm
Z = 4