A distinct difference between the three-center halogen bond and the analogous three-center coordinative bond of silver is demonstrated by computational, X-ray crystallographic and solution NMR spectroscopic investigations of their complexes with a bidentate Lewis base. Iodine(I) preferentially forms an entropically favored monomeric complex, whereas silver(I) forms enthalpically favored dimeric complexes. Counterion coordination considerably influences the structure of the silver complexes in the solution and solid state, whereas it does not have notable effect on the analogous halogen bond.

中文翻译：

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碘离子的卤素键：与银配位不同的世界

三中心卤素键和银的类似三中心配位键之间的明显区别是通过计算、X 射线晶体学和溶液 NMR 光谱研究它们与双齿路易斯碱的配合物来证明的。碘（I）优先形成熵有利的单体络合物，而银（I）形成焓有利的二聚体络合物。反离子配位显着影响溶液和固态中银配合物的结构，而它对类似的卤素键没有显着影响。