Huang Jie-Sheng, Xie Jin, Kui Steven C F, Fang Guo-Su, Zhu Nianyong, Che Chi-Ming
Department of Chemistry and Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
Inorg Chem. 2008 Jul 7;47(13):5727-35. doi: 10.1021/ic8000043. Epub 2008 Jun 13.
Reaction of Ag( p-MeC 6H 4SO 3) with 2,6-bis(bis(2-pyridyl)methoxymethane)pyridine (PY5) in CH 2Cl 2 gave [Ag (I) 2(PY5) 2](p-MeC 6H 4SO 3) 2 (1). Treatment of 2,6-bis(bis(2-pyridyl)hydroxymethane)pyridine (PY5-OH) with AgNO 3 in MeOH gave Ag (I) 2(PY5-OH) 2 2 (2); in the presence of PPh 3, this reaction afforded [Ag (I)(PY5-OH)(PPh 3)]NO 3 (3). The structures of 1- 3 have been determined by X-ray crystal analysis, revealing four-coordinate Ag (I) ions in these complexes. Both 1 and 2 feature a quadruply branched 28-membered C 16N 10M 2 metallamacrocycle fused to 10 pyridyl groups. On the basis of (1)H NMR measurements, the dinuclear 1 and 2 dissociate into a mononuclear complex upon dissolving in MeCN but in MeOH an equilibrium between the mono- and dinuclear species can be detected.
在二氯甲烷中，Ag(p-MeC₆H₄SO₃) 与2,6-双（双（2-吡啶基）甲氧基甲烷）吡啶（PY5）反应生成 Ag(I)₂(PY5)₂₂ (1)。在甲醇中，2,6-双（双（2-吡啶基）羟甲基）吡啶（PY5-OH）与AgNO₃反应生成 Ag(I)₂(PY5-OH)₂₂ (2)；在三苯基膦存在下，该反应得到 [Ag(I)(PY5-OH)(PPh₃)]NO₃ (3)。通过X射线晶体分析确定了1 - 3的结构，揭示了这些配合物中四配位的Ag(I)离子。1和2都具有一个四重支化的28元C₁₆N₁₀M₂金属大环，与10个吡啶基稠合。基于¹H NMR测量，双核的1和2在溶解于乙腈时会解离为单核配合物，但在甲醇中可以检测到单核和双核物种之间的平衡。
