Abstract: The reaction of BiI₃ with pyrazine in tetrahydrofuran affords the two-dimensional coordination polymer {[Bi(Pyz)I₃]} (I), whose structure is determined by X-ray diffraction analysis (СIF file ССDС no. 1904990). The contributions of various interatomic contacts to the crystal packing of compound I are studied using the Hirshfeld surface analysis performed for the elementary unit of compound I. The interatomic distances I···H make the largest contribution to the crystal packing of compound I.