Abstract Three metal–organic networks, namely, [Zn2(Hnip)(4-bpdb)(nip)2(μ3-OH)] (1), {[Zn(tbip)(4-bpdb)1.5]·CH3OH}n (2), and {[Ni(1,3-bdc)(4-bpdb)]·2H2O}n (3) (4-bpdb = 1.4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene, H2nip = 5-nitroisophthalic acid, H2tbip = 5-tert-butylisophthalic acid, and 1,3-H2bdc = 1,3-benzenedicarboxylic acid) are synthesized under hydrothermal conditions. The structure of 1 is built around uncommon rhombic {Zn4} clusters with double Td and double Oh Zn(II) geometries, which extend into a 2D network by the rigid deprotonated H2nip and 4-bpdb bridges. Meanwhile, 2 presents a novel 2D → 3D parallel polycatenated framework assembled from 2D bilayers with cuboids as the fundamental building units. Compound 3 features an interesting 2D → 3D inclined polycatenated network based on 44-sql subunits. Moreover, the thermal stabilities, photoluminescence, and magnetic properties of the compounds are also discussed.

中文翻译：

---

由 1,4-双(4-吡啶基)-2,3-二氮杂-1,3-丁二烯和二羧酸盐构成的三种独特的 MOF：从菱形四聚锌 (II) 2D 层到 2D+2D→3D 多链框架

摘要 三种金属-有机网络，即[Zn2(Hnip)(4-bpdb)(nip)2(μ3-OH)] (1), {[Zn(tbip)(4-bpdb)1.5]·CH3OH}n (2), 和 {[Ni(1,3-bdc)(4-bpdb)]·2H2O}n (3) (4-bpdb = 1.4-bis(4-pyridyl)-2,3-diaza-1, 3-丁二烯、H2nip = 5-硝基间苯二甲酸、H2tbip = 5-叔丁基间苯二甲酸和 1,3-H2bdc = 1,3-苯二甲酸）在水热条件下合成。1 的结构围绕具有双 Td 和双 Oh Zn(II) 几何结构的罕见菱形 {Zn4} 簇构建，通过刚性去质子化 H2nip 和 4-bpdb 桥延伸到二维网络中。同时，2 提出了一种新颖的 2D → 3D 平行多链框架，该框架由 2D 双层组装而成，长方体作为基本构建单元。Compound 3 具有一个基于 44-sql 子单元的有趣的 2D → 3D 倾斜多链网络。此外，热稳定性，