title: catena-Poly[silver(I)-μ-pyrazolato-κN:N'].
abstract: The title compound, [Ag(C(3)H(3)N(2))](n), has an infinite helical chain structure in which each pyrazolate group bridges two Ag(I) atoms related by a 2(1) axis with an intra-chain Ag⋯Ag separation of 3.3718 (7) Å. Each Ag(I) center is linearly coordinated by two N atoms [N-Ag-N angle = 169.98 (14)°]. The chains are held together by inter-chain Ag⋯Ag inter-actions [3.2547 (6) Å], forming a two-dimensional layer. The X-ray single-crystal diffraction result is consonant with that of the ab initio X-ray powder diffraction reported by Masciocchi, Moret, Cairati, Sironi, Ardizzoia & La Monica [J. Am. Chem. Soc. (1994). 116, 7668-7676], with only minor deviations of structural parameters.
authors.affiliation: College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, People's Republic of China.
authors.forename: Chao-Yan
authors.initials: CY
authors.lastname: Zhang
authors.forename: Jian-Bo
authors.initials: JB
authors.lastname: Feng
authors.forename: Qian
authors.initials: Q
authors.lastname: Gao
authors.forename: Ya-Bo
authors.initials: YB
authors.lastname: Xie