【摘 要】
：
The crystal structure of the title compound [Na2(OH2)5]2+[C6H12N4H2]2-2+ [Mo7O24]6- · 4H2O, prepared from an aqueous solution of Na2MoO4·2H2O in the presence
【机 构】
：
State Key Laboratory of Structural Chemistry
论文部分内容阅读
The crystal structure of the title compound [Na2(OH2)5]2+[C6H12N4H2]2-2+ [Mo7O24]6- · 4H2O, prepared from an aqueous solution of Na2MoO4·2H2O in the presence of MoCl3 and hexamethylene tetramine, has been determined by single-crystal X-ray diffraction. The crystal is of orthorhombic, space group Pnma with a = 14.6113(2), b = 18.6833(1), c = 15.3712(2)A, V = 4196.14(8)A3, Z = 4, Mr = 1548.13, F(000) = 3016, μ = 2.157 mm(1 and Dc = 2.451 g/cm3. The final R factor is 0.0526 for 3818 unique observed reflections (I > 2σ(I)). The structural analysis reveals that heptamolybdate anions in the title compound consist of seven edge-sharing MoO6 octahedra, and are linked into a three-dimensional framework by sodium ions and hydrogen bonds.
其他文献
合成了Eu(TTA) 3 ·Phen和Eu0 .8Y0 .2 (TTA) 3 ·Phen固体配合物微晶粉末及其掺杂的SiO2 凝胶样品 .在30 0～ 80 0nm测定并解释了其光声光谱 .在配体吸收处 ,Eu0 .8Y0 .2 (TTA
Recently, a new decomposition of the (2+1)-dimensional Kadomtsev Petviashvili (KP) equation to a (1+1 )-dimensional Broer-Kaup (BK) equation and a (1+1)-dimensi
Consider any traveling wave solution of the Kuramoto-Sivashinsky equation that is asymptotic to a constant as x → +∞. The authors prove that it is nonlinearly
Manganese silicide MnSi2-x thin films have been prepared on n-type silicon substratesthrough solid phase reaction. The heterostructures were analyzed by X-ray d
The objective of this paper is to consider the theory of regularity of systems of partial differential equations with Neumann boundary conditions. It complement
A new cembranoide deterpene was isolated from the soft coral Sinularia Tenella. The crystal and chemical structure of the title compound were determined by mean
Silicon containing materials have traditionally been used in microelectronic fabrication. Semiconductor devices often have one or more arrays of patterned inter
The changes in arachidonic acid (AA) and fatty acids profiles along the growth curve of Parietochloris incisa, a coccoid snow green alga, were studied in a 2.8