Title Crystal structure of 2,2'-biqinoline- 2N,N')dichloromercury(II), C18H12Cl2HgN2 Type of Research Article Keywords test Abstract C18H12Cl2HgN2, monoclinic, C2/c (no. 15), a = 13.442(1) Å, b = 16.094(1) Å, c = 7.585(1) Å, = 96.26(1)°, V = 1631.1 Å3, Z = 4, Rgt(F) = 0.0458, wRref(F2) = 0.0813, T = 298 K. Researchers sadif shirvan (First Researcher)، Moayad Hossaini Sadr (Second Researcher)، karim zare (Third Researcher)