排序方式: 共有80条查询结果,搜索用时 203 毫秒
41.
张 《高等学校化学学报》1999,20(9):1329-1333
利用苯乙炔或丙炔醇与[Mo(CO)2(η5-C5H4R1)]2[R1=C(O)Me,C(O)OEt,C(O)Ph]的反应合成了6个新的炔烃配位的双钼化合物[Mo(CO)2(η5-C5H4R1)]2(μ-η2,η2-(CH=CR2)[R1=C(O)Me,R2=Ph,1;R1=C(O)OEt,R2=Ph,2;R1=C(O)Ph,R2=Ph,3;R1=C(O)Me,R2=CH2OH,4;R1=C(O)OEt,R2=CH2OH,5;R1=C(O)Ph,R2=CH2OH,6],并对这些化合物进行了C/H元素分析,IR,1HNMR等表征.晶体X射线衍射分析结果表明,化合物1属单斜晶系,P21(#4)空间群,晶胞参数a=0.7671(2)um,b=0.8365(2)nm,c=1.8308(3)nm,β=98.34(1)°,V=1.1623(5)um3,Z=2,Dc=1.772g·cm-3,F(000)=616,R=0.041,Rw=0.045. 相似文献
42.
1 INTRODUCTIONThecoordinationchemistryofmulti substitutedoxamidesisofimportancetoawidevarietyofchemical[1 ] ,biological[1 ] andappliedsystems[2 ,3] .Themagnetic[4,5]andspectroscopic[6 ,7] propertiesoftheoxamidecomplexesareveryinteresting .Alotofmononuclearandbimetall… 相似文献
43.
1INTRoDUCTIoNThechemistryof[MS'j'-(M=Mo,W)anionsandtheirrelatedcompoundshavebeenextensivelyinvestigatedfortheirrelevancetobiologicalsystem,richstruc-turalchemistryandspecialreactivepropertiesaswellaspotentialapplicationinnon-linearopticalmaterials,t1~5iwhereasthatof[MSe'j'-(M=Mo,W)anionsandtheirrelatedcompoundshavereceivedattentiononlyinrecentyears.t6~7)Inl989lMhllerisolatedtwoclustercompounds,namely,cubane-like[OMoSe3Cl-(CuPPh,),j(siandlinear[WSe'(AgPPh,),).t9iAfterthat,lbersstud… 相似文献
44.
45.
46.
47.
SolidSynthesisandCrystalStructureofCompound[(PPh_3)_3,Cu_2MoOS_3]LinZhen-Guang(DepartmentofChemistry,FujianNormalUniversity,Fuz... 相似文献
48.
49.
一个计算正烷烃沸点的公式 总被引:1,自引:0,他引:1
正烷烃(直链饱和烃)的一般分子式是C_?H_(2?+2),从碳的原子数n计算它们的沸点T°K(T是正常沸点℃+273.15℃),历来有许多经验公式发表过。本论文新提出一个公式是: 相似文献
50.
<正> Title compound Na5Y (WO4)4 (Mr = 1195. 24) crystallizes in the space group I41/a with the cell parameters a= 11. 447(7), c= 11. 336(1) A , Z = 4, V = 1485(2) A3, A = 5. 34 g/cm3. A(MoKα) = 0. 71069 A. F(000) = 2702, final R = 0. 045,Rw = 0. 054 for 936 observed reflections with I≥3σ(I). The title compound has a scheelite structure.In this paper, we also give the X-ray powder diffraction data of Na5Y(WO4)4 obtained by using a D/max-ra type diffractometer. 相似文献