Granifo Juan, Garland María Teresa, Baggio Ricardo
Departamento de Ciencias Químicas, Facultad de Ingeniería, Ciencias y Administración, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
Acta Crystallogr C. 2004 Feb;60(Pt 2):m97-100. doi: 10.1107/S0108270104000198. Epub 2004 Jan 31.
The structure of the title compound, catena-poly[[bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato-kappa(2)O,O')zinc(III)]-micro-4,4'-bipyridine-kappa(2)N:N'], Zn(C(5)HF(6)O(2))(2)(C(10)H(8)N(2)), consists of polymeric chains, running in two perpendicular directions, organized as planes normal to the tetragonal axis. The elemental unit of the chains is the zinc(II) coordination polyhedron bisected by a twofold symmetry axis, and thus only half of the unit is independent. The octahedral coordination geometry of the metal centre is composed of two oxygen-chelating (symmetry-related) hexafluoroacetylacetonate groups and two translationally related 4,4'-bipyridine groups, which act as connecting agents in the polymer structure. The stabilization of this architecture of chains and planes is associated with a number of weak C-H.O and C-H.F hydrogen bonds.
标题化合物链状聚[[双(1,1,1,5,5,5 - 六氟戊烷 - 2,4 - 二酮 - κ(2)O,O')锌(III)] - μ - 4,4'-联吡啶 - κ(2)N:N']，[Zn(C₅HF₆O₂)₂(C₁₀H₈N₂)]ₙ的结构由在两个垂直方向上延伸的聚合物链组成，这些链排列成垂直于四方轴的平面。链的基本单元是被一个二次对称轴平分的锌(II)配位多面体，因此只有一半的单元是独立的。金属中心的八面体配位几何结构由两个氧螯合（对称相关）的六氟乙酰丙酮基团和两个平移相关的4,4'-联吡啶基团组成，4,4'-联吡啶基团在聚合物结构中充当连接剂。这种链和平面结构的稳定与许多弱的C - H···O和C - H···F氢键有关。
