Six mixed metal complexes with 3-aminopyridine (3-ampy) as a co-ligand have been synthesized: catena-{[M(μ2-3-ampy)(H2O)4]SO4·H2O} (M=Ni (1) and Co (2)), [Co(3-ampy)4(NCS)2] (3), [Co(3-ampy)2(NCS)2] (4), [Co(3-ampy)4(N3)2] (5) and mer-[Co(3-ampy)3(N3)3] (6), (NCS−=isothiocyanate ion, N3− azide ion), and characterized by physio-chemical and spectroscopic methods as well as single crystal X-ray and powder diffraction. In the isostructural complexes 1 and 2 single μ2-3-ampy links the Ni(II) and Co(II) centers into polymeric chains. The mononuclear Co(II) and Co(III) pseudohalide complexes 3–6 reveal only terminal 3-ampy ligands. The 3-ampy ligands form supramolecular hydrogen bonded systems via their NH2-groups and non-covalent π-π ring-ring interactions via their pyridine moieties. Thermoanalytical properties were investigated for 1–3.

中文翻译：

---

以 3-氨基吡啶为共配体的金属配合物的合成、结构表征和热行为

合成了六种以 3-氨基吡啶 (3-ampy) 作为配体的混合金属配合物：catena-{[M(μ2-3-ampy)(H2O)4]SO4·H2O} (M=Ni (1)和 Co (2)), [Co(3-ampy)4(NCS)2] (3), [Co(3-ampy)2(NCS)2] (4), [Co(3-ampy)4( N3)2] (5) 和 mer-[Co(3-ampy)3(N3)3] (6)，（NCS-=异硫氰酸根离子，N3-叠氮离子），并通过物理化学和光谱方法表征为以及单晶X射线和粉末衍射。在同构复合物 1 和 2 中，单个 μ2-3-ampy 将 Ni(II) 和 Co(II) 中心连接成聚合物链。单核 Co(II) 和 Co(III) 假卤化物配合物 3-6 仅显示末端 3-ampy 配体。3-ampy 配体通过它们的 NH2-基团和非共价 π-π 环-环相互作用通过它们的吡啶部分形成超分子氢键系统。研究了 1-3 的热分析特性。