The Helical Coordination Polymer Ag(Nic)2(NO3)
The Helical Coordination Polymer Ag(Nic)2(NO3)
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DOI：
10.1002/zaac.200500345
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
G. Meyer;A. Berners;I. Pantenburg
中科院分区：
文献类型：
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作者：
G. Meyer;A. Berners;I. Pantenburg
从硝酸银和烟碱的水溶液中得到银（Nic）2（NO3）单晶，呈片状无色晶体。晶体结构(单斜晶，P21, Z = 2, a = 933.3(2), b = 1136.8(2), c = 1024.3（2) pm, β = 94.49(2)°）由螺旋链组成，其中一个尼古丁分子与吡啶- n和吡啶- n配位，另一个尼古丁分子末端与吡啶- n配位。单齿硝酸盐o完成了Ag+的配位球，形成了扭曲的四面体。Ag - n的距离（229-240 pm）证明尼古丁分子对Ag(I)具有很强的吸引力，因此根据配方Ag(Nic1)2/2(Nic2)1/1(NO3)1/1基本上构成了一维螺旋配位聚合物。
Single crystals of Ag(Nic)2(NO3) were obtained from an aqueous solution of silver nitrate and nicotine as plate-like colourless crystals. The crystal structure (monoclinic, P21, Z = 2, a = 933.3(2), b = 1136.8(2), c = 1024.3(2) pm, β = 94.49(2)°) consists of helical chains in which one nicotine molecule bridges with both the pyridine-N and the pyrrol-N coordinating and with a second nicotine molecule terminally coordinating with the pyridine-N. A monodentate nitrate-O is completing the coordination sphere of Ag+ to a distorted tetrahedron. Ag–N distances (229-240 pm) attest for a rather strong attraction of the nicotine molecules to Ag(I) and thereby constitute essentially a one-dimensional, helical coordination polymer according to the formulation Ag(Nic1)2/2(Nic2)1/1(NO3)1/1.