The First Example of a Supramolecular Structure Containing [2-(1H-Pyrazol-3-yl)-pyridine] Complex and both α-and β-Octamolybdates

The title compound, [Ni（C8N3H7）3]4[Mo8O26]2·6H2O 1, has been synthesized from the reaction of 2-（1H-pyrazol-3-yl）-pyridine （L） with （NH4）2MoO4·2H2O and NiCl2·6H2O. Elemental analysis, IR, UV spectra and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure of the compound. Crystal data： C96H96Mo16N36Ni4O58, Mr = 4451.97, monoclinic system, space group P21/n, a = 20.846（5）, b = 14.825（5）, c = 23.122（5） A ,β= 91.594（5）°, V = 7143（3）A^3, Z = 2, F（000） = 4344, Dc = 2.070 g/cm^3,μ = 1.968 mm^-1, R = 0.0452 and wR = 0.1056 for 17102 independent reflections （Rint = 0.0442） and 11074 observed reflections （I 〉 2σ（I））. Structural analysis indicates that two kinds of octamolybdates （[α-Mo8026]^4- and [β-Mo8026]^4-） co-exist in the compound. This is the first example of a supramolecular structure containing L complex as well as both α- and β-octamolybdate clusters.

含有双齿配体二苯基膦基吡啶(Ph_2PPy)的羰基镍配合物——(Ph_2PPy)_2Ni(CO)_2的合成和分子结构

应用一个简单新方法,在锌粉存在和常温常压下,(Ph_2PPy)_2NiCl_2与CO作用得到新配合物(Ph_2PPy)_2Ni(CO)_2。对后者经X衍射测定了晶体及分子结构,该晶体属正交晶系P_(cab.)晶胞参数为:a=12。044(3),b=21。322(5),c=24.925(5),Z=8.R=0.051和R_w=0.055,该分子中的镍原子配位为四面体构型。