Shahverdizadeh Gholam Hossein, Tiekink Edward R T, Mirtamizdoust Babak
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1727-8. doi: 10.1107/S1600536811046691. Epub 2011 Nov 9.
The Pb(II) atom in the polymeric title compound, {[Pb(C(13)H(11)N(4)O)]ClO(4)}(n), is coordinated by the N'-[1-(pyridin-2-yl-κN)ethyl-idene]isonicotinohydrazidate ligand via its O,N,N'-donors and simultaneously bridged by a neighbouring ligand via the pyridin-2-yl N atom. The resultant supra-molecular chain is a zigzag along the a axis. The stereochemistry of the Pb(II) atom is defined by an N(3)OE donor set (E = lone pair of electrons), which results in a Ψ-trigonal-bipyramidal coordination with the O and pyridin-2-yl N atoms in axial positions. The dihedral angle between the pyridine rings of the ligand is 6.3 (3)°. The supra-molecular cationic chains are linked into a three-dimensional array via secondary Pb⋯O [3.133 (6) and 3.28 (7) Å] and Pb⋯N [3.028 (4) Å] inter-actions. Weak C-H⋯O inter-actions and aromatic π-π stacking [centroid-centroid separation = 3.693 (2) Å] also occur in the crystal.
在聚合标题化合物{[Pb(C₁₃H₁₁N₄O)]ClO₄}ₙ中，Pb(II)原子通过其O、N、N'供体与N'-[1-(吡啶-2-基-κN)亚乙基]异烟酰肼配体配位，并同时通过吡啶-2-基N原子被相邻配体桥连。所得的超分子链沿a轴呈锯齿状。Pb(II)原子的立体化学由一个N₃OE供体集（E = 孤电子对）定义，这导致在轴向位置的O和吡啶-2-基N原子形成一个Ψ-三角双锥配位。配体吡啶环之间的二面角为6.3 (3)°。超分子阳离子链通过次级Pb⋯O [3.133 (6) 和3.28 (7) Å]和Pb⋯N [3.028 (4) Å]相互作用连接成三维阵列。晶体中还存在弱的C-H⋯O相互作用和芳香π-π堆积[质心-质心间距 = 3.693 (2) Å]。
