Abstract A dinuclear and a tetranuclear complex of lead(II) with the pincer-type ligand 4′-(4-chlorophenyl)-2,2′:6′,2″-terpyridine (Cl-Ph-tpy), [Pb2(Cl-Ph-tpy)2(μ-I)2I2] (1) and [Pb4(Cl-Ph-tpy)4(μ-Br)4(μ-OH2)Br4]·2CH3OH (2), have been synthesized and characterized by elemental analysis, FT-IR and 1H NMR spectroscopy, and by single-crystal X-ray diffraction. In the binuclear structure of 1, the Pb atom has a hemidirected PbN3I3 environment with a Pb(μ-I)2Pb central unit. In the tetranuclear structure of 2, two crystallographically independent Pb(II) centres having hemidirected PbN3Br3 and PbN3OBr2 environments are connected to Pb(μ-Br)Pb(μ-Br)2(μ-OH2)Pb(μ-Br)Pb chains. The supramolecular features in 1 and 2 are supported through weak but directional C–H···Cl, C–H···I and C–H···Br, C–H···O, O–H···Br, and O···Br interactions and aromatic π-π stacking.

中文翻译：

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两种新的铅 (II) 配合物与钳型配体 4'-(4-氯苯基)-2,2':6',2"-三联吡啶 (Cl-Ph-tpy) 的合成和晶体结构：微妙的相互作用弱分子间相互作用

摘要 铅 (II) 与钳型配体 4'-(4-氯苯基)-2,2':6',2"-三联吡啶 (Cl-Ph-tpy), [Pb2( Cl-Ph-tpy)2(μ-I)2I2](1)和[Pb4(Cl-Ph-tpy)4(μ-Br)4(μ-OH2)Br4]·2CH3OH(2)，已合成并通过元素分析、FT-IR 和 1H NMR 光谱以及单晶 X 射线衍射表征。在 1 的双核结构中，Pb 原子具有半定向的 PbN3I3 环境，带有 Pb(μ-I)2Pb 中心单元。在 2 的四核结构中，具有半定向 PbN3Br3 和 PbN3OBr2 环境的两个晶体学独立的 Pb(II) 中心连接到 Pb(μ-Br)Pb(μ-Br)2(μ-OH2)Pb(μ-Br)Pb 链. 1 和 2 中的超分子特征通过弱但定向的 C–H…Cl、C–H…I 和 C–H…Br、C–H…O、O–H…支持·Br，和O···Br相互作用和芳香π-π堆积。