X-Ray structural studies show that in the compounds [Cu2(p-XBP4)3(NO3)2](NO3)2·2H2O and [Zn2(p-XBP4)4](BF4)4·4H2O [p-XBP4 =N,Nâ²-p-phenylenedimethylenebis(pyridin-4-one)] pyridone oxygen atoms bridge pairs of metal ions to form M2O2 units which, in turn, are linked by p-XBP4 bridges to produce complex arrays of, for Zn, 34- and 38-membered rings or, for Cu, 68-membered rings âthreadedâ by interwoven p-XBP4 strands.
X射线结构研究表明,在化合物[Cu2(p-XBP4)3(
NO3)2]( )2·2H2O和[Zn2(p-XBP4)4](
BF4)4·4H2O中,[p-XBP4=N,N²-对苯基二亚甲基双(
吡啶-4-酮)]
吡啶酮氧原子将成对
金属离子桥接,形成M2O2单元,这些单元又通过p-XBP4桥连接,形成复杂的结构,对于
锌,形成34和38个成员环,对于
铜,形成68个成员环,这些环由交织的p-XBP4链“穿成”。