A detailed comparative structural study of the hydrogen bonded networks in solids, obtained by the reaction of 4,4′-bipyridine and varied alkane-α,ω-diphosphonic acids
作者:M. van Megen、W. Frank、G. J. Reiss
DOI:10.1039/c5ce02156a
日期:——
In a comparative structural study, the solid state structures of seven new compounds obtained by the reaction of 4,4′-bipyridine and alkane-α,ω-diphosphonic acids with different chain lengths have been characterised by single crystal X-ray diffraction and vibrational spectroscopy. The compounds are composed of either [4,4′-Hbipy]+ or [4,4′-H2bipy]2+ cations and [H2O3P(CH2)nPO3H]− anions and exhibit
在一项比较结构研究中,通过单晶X射线衍射和振动表征了通过不同链长的4,4'-联吡啶与烷烃-α,ω-二膦酸反应获得的七个新化合物的固态结构。光谱学。这些化合物由[4,4'-Hbipy] +或[4,4'-H 2 bipy] 2+阳离子和[H 2 O 3 P(CH 2)n PO 3 H] -阴离子组成,并呈层状具有明显分开的阴离子和阳离子区域的结构。在三[4,4'- Hbipy] +盐中,4,4'-联吡啶-1-鎓阳离子通过中等强度的,带电荷的N + -H⋯N氢键与相邻的阳离子相连,形成无限链。这些化合物的阴离子亚结构完全不同。五个[4,4'-H 2 bipy] 2+盐的晶体结构由阴离子的氢键合链组成,它们通过4,4'-联吡啶-1,1'-diium阳离子与相邻的链相连。除了一个以外,其他所有类型都可以分解为两种不同类型的结构,其中阳离子与阴离子链成一直线(类型1)或垂直于前述阴离子(类型2)。对于[4