新型磷酸钒孔道结构化合物(H3NCH2CH2NH3)3- [ (VO)4(PO4)2 (HPO4)4]的水热 合成及结构表征

以有机分子乙二胺作为模板剂合成了新型磷酸钒孔道化合物(H3NCH2CH2NH3)3^-[(VO)4(PO4)2(HPO4)4，并通过X射线单晶衍射实验进行了结构表征，晶体学数据为：C2/c,a=1.8505(9)nm,b=0.7089(4)nm,c=2.3304(10)nm,β=96.43(3)°,V-3.038(3)nm^3,Z=8,R=0.067,Rw^b=0.1635,该化合物具有非常独特和规整的二维孔道骨架结构，进一步的晶体化学研究表明该化合物为一新的VPO物相。

Hydrothermal Synthesis and Structure Characterization of a Novel Open-Framework Vanadium Phosphate (H3NCH2CH2NH3)3 [ (VO)4(PO4)2(HPO4)4 ]

A novel ethylenediamine templated open-framework vanadium phosphate (H3NCH2CH2NH3)3-[ (VO)4(PO4)2(HPO4)4] has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. Green needle-like compound crystallized in monoclinic space group C2/c with a = 1.8505(9) nm, b =0.7089(4) nm, c =2.3304(10) nm, β=96.43(3)°, V=3.038(3) nm3, Z=8, and R=0.067 for 1912 unique reflections. The structure consists of layers constructed of corner - sharing V( Ⅳ ) octahedra,V(Ⅳ ) trigonal bipyramids, (PO4)3-and (HPO4)2-tetrahedra, which are held together by hydrogen bonding interaction to form the runnels paralleled to the c axis and the [ 110] direction. Studies of crystal structure and crystal chemistry shows that this compound is a new VPO phase with an unique and topotactic two dimensional open framework structure.