Billing David G, Lemmerer Andreas
School of Chemistry, University of the Witwatersrand, Private Bag 3, PO Wits 2050, South Africa.
Acta Crystallogr C. 2006 May;62(Pt 5):m174-6. doi: 10.1107/S0108270106009127. Epub 2006 Apr 13.
The title compound, {(C9H14N)4[Pb3I10]}n, crystallizes as an organic-inorganic hybrid. As such, the structure consists of a two-dimensional inorganic layer of [Pb3I10]n(4n-) ions extending along [100]. The asymmetric unit contains two independent Pb atoms, viz. one in a general position and the other on an inversion centre. Each Pb atom is octahedrally coordinated by six iodide ions and exhibits both face- and corner-sharing with adjacent atoms in the inorganic layer. These anionic layers alternate with 3-phenylpropylammonium cations, which hydrogen bond to the iodides. Simple face-to-edge sigma-pi stacking interactions are observed between the aromatic rings that stabilize the overall three-dimensional structure. This net structure has only been observed five times previously.
标题化合物{(C₉H₁₄N)₄[Pb₃I₁₀]}ₙ以有机-无机杂化物的形式结晶。因此，其结构由沿[100]方向延伸的[Pb₃I₁₀]ₙ⁽⁴ⁿ⁻⁾离子的二维无机层组成。不对称单元包含两个独立的铅原子，即一个处于一般位置，另一个位于对称中心。每个铅原子由六个碘离子八面体配位，并与无机层中的相邻原子存在面共享和角共享。这些阴离子层与3-苯基丙铵阳离子交替排列，3-苯基丙铵阳离子与碘化物形成氢键。在芳环之间观察到简单的面对面-边对边σ-π堆积相互作用，这种相互作用稳定了整个三维结构。这种网状结构此前仅被观察到五次。
