The self‐assembly of 4,4′‐dipyridylditelluride/diselenide and M(OTf)₂ {M = cis‐[Pt(PEt₃)₂]²⁺ or cis‐[Pd(dppe)]²⁺; dppe = 1,2‐bis(diphenylphosphino)ethane} yields [M(µ₂‐4,4′‐py₂E₂)]_n(OTf)_2n (E = Se, Te). The major and minor products, indistinguishable by simple proton NMR and phosphorus NMR spectroscopy, can be detected by heteronuclear (⁷⁷Se, ¹²⁵Te, and ¹⁹⁵Pt) NMR spectroscopy. The respective dimeric and trimeric structures are assigned by ESI and MALDI‐TOF mass spectrometry, and for the first time, their equilibria have been established. The rhomboid shape of the dimeric complex containing the Pt–N bond is confirmed by its X‐ray diffraction structure. The formation of the cluster‐type minor product [Pd₃(µ‐E)₂(dppe)₃](OTf)₂ has also been identified in the reactions of the Pd complexes.

中文翻译：

---

通过自组装4,4'-联吡啶二碲化物/二硒化物配体的超分子Pt和Pd配合物

4,4'-二吡啶基二碲化物/二硒化物和M（OTf）₂ {M =顺-[Pt（PEt ₃）₂ ] ²⁺或顺-[Pd（dppe）] ²⁺的自组装；dppe = 1,2-双（二苯基膦基）乙烷}的产率为[M（µ _2- 4,4'-py ₂ E ₂）] _n（OTf）_{2 n}（E = Se，Te）。主要和次要产物（通过简单的质子NMR和磷NMR光谱无法区分）可以通过异核（⁷⁷ Se，¹²⁵ Te和¹⁹⁵Pt）NMR光谱。ESI和MALDI-TOF质谱分别指定了二聚体和三聚体结构，并且首次建立了它们的平衡。包含Pt–N键的二聚体复合物的菱形形状通过其X射线衍射结构得以证实。在钯络合物的反应中也已经确定了团簇型次要产物[Pd ₃（µ-E）₂（dppe）₃ ]（OTf）_2的形成。