共查询到19条相似文献,搜索用时 62 毫秒
1.
以咪唑对苯甲酸和溴化锌为原料,以乙醇-水为溶剂,通过溶剂热反应合成了一种新型配位聚合物[Zn(C10H7N2O2)Br]n,并对其进行了元素分析、红外光谱表征和X射线单晶衍射测定.该配位聚合物属单斜晶系,空间群P2(1)/c,a=0.83624(6)nm,b=1.5878(1)nm,c=0.8720(6)nm,β=107.804(1)°,V=1.1024(1)nm3,Z=4,dc=2.003 g/cm3,μ=5.836 mm2,F(000)=648.该晶体通过配位键的连接形成二维网状结构.荧光光谱结果表明,配合物在蓝光区有较强的发射. 相似文献
2.
合成了配合物[Zn(C28H20N4O2)(CH3OH)]并对其进行了元素分析和红外光谱表征.X射线单晶结构分析表明该配合物为一单螺旋结构,Zn(Ⅱ)原子呈现扭曲的三角双锥配位构型.晶体中分子间存在的边对面和边对边的π…π作用、C-H…π作用以及O-H…O氢键作用使其形成三维网状结构.该晶体属于三斜晶系P(1-)空间群,晶胞参数分别为:α=0.9303(2)nm,b=1.0413(2)nm,c=1.4625(3)nm,α=96.340(10)°,β=103.160(10)°,γ=112.500(10)°,V=1.2434(4)nm3,Z=2dc=1.447g cm-3,T=293(2)K,μ=1.027mm-1,F(000)=560,R1=0.0463,wR2=0.0941[I>2K(I)]. 相似文献
3.
以Cu(NO3)2·3H2O为原料,加入NaOH或NaOH+Na2CO3水溶液沉淀剂,生成Cu(OH)2或Cu2(OH)2CO3沉淀作前驱物,采用乙醇/水混合溶剂热法制备CuO.用FT-IR、XRD、SEM等方法对产物进行了表征.研究了溶剂的组成、前驱物的种类等因素对产物形貌及生成速率的影响.实验结果显示:以Cu2(OH)2CO3作前驱物,溶剂组成为V(C2H5OH):V(H2O)=1:2、150 ℃处理12 h可得形状规整的片状CuO;而以Cu(OH)2作前驱物,在相同条件下处理所得产物形貌为纺锤形. 相似文献
4.
5.
采用水热法合成了一个锌的新型配位聚合物{[Zn(CPGA)(DPPP)]·H2O}n(1),[CPGA=3-(4-氯苯基)戊二酸根,DPPP=l,3-二(4-吡啶基)丙烷],用元素分析、红外光谱和X-射线单晶结构等进行了表征.结果表明该配位聚合物属于单斜晶系,P21/n空间群.晶胞参数为:a=1.3775(2) nm,b=1.20745(19) nm,c=1.4854(2) nm,F(000)=1080,Dc=1.419 g·cm-3,V=2.4446(7) nm3,Mr=522.28,Z=4,μ=1.151 mm-1,月1=0.0389,ωR2=0.1253.该配位聚合物晶体中,Zn(Ⅱ)与配体3-(4-氯苯基)戊二酸根和DPPP连接形成一维波浪面结构,水分子和3-(4-氯苯基)戊二酸根中未参与配位的氧原子形成的氢键将相邻的两层连接形成双层结构,双层结构没有进一步连接. 相似文献
6.
采用溶剂热法以醋酸锌和硫化钠反应成功制备了具有双螺旋结构的一维ZnS纳米棒,利用X射线衍射(XRD)、高分辨透射电子显微镜(HRTEM)、选区电子衍射(SAED)、X射线能量色散分析谱仪(XEDS)、紫外吸收光谱(UV-vis)和光致发光谱(PL)等测试手段对样品的化学成分、形貌、晶体结构和光学性质等进行了表征分析.实验结果表明样品为一维六方纳米晶结构,沿着[001]方向生长,并具有双螺旋结构,长度分布在100~200 nm范围,直径约为5 ~15 nm,螺距约为20 nm.双螺旋ZnS纳米结构的吸收峰与块体材料相比发生了蓝移. 相似文献
7.
以CoCl2、3-(3-吡啶基)丙烯酸(pda)和KSCN为原料,在水热反应条件下,合成了一种三维配位聚合物[Co(pda)(SCN)(H2O)]n晶体,对其进行了元素分析、红外光谱表征、X射线单晶衍射测定和热重分析.该配位聚合物属三斜晶系,P-1空间群,晶胞参数为a=0.7309(5)nm,b=0.8799(6)nm,c=0.9634(6)nm,α=68.128(10)°,β=73.241(11)°,γ=71.218(12)°,V=0.5343(6)nm3,Z=2,dc=1.760g/cm3,μ=1.792mm-1,F(000)=268,R1=0.0450, wR2= 0.1035.X射线单晶衍射显示形成一个三维的网络结构. 相似文献
8.
采用溶剂热法,对制备的前驱体进行热处理,最后得到了片状结构的ZnSe纳米材料.然后利用X射线衍射(XRD)、扫描电子显微镜(SEM)、高分辨透射电子显微镜(HRTEM))和光致发光谱(PL)等测试手段对样品的晶体结构、形貌、微结构和光学性质等进行了表征分析.结果表明制备的ZnSe块状结构是由厚度大约在200 ~300 nm纳米带堆叠而成,其晶体结构为密排六方晶体结构.此外,通过分析反应过程,对片状ZnSe生成过程中的可能的化学反应和片状ZnSe可能的形成机理做了简单的分析. 相似文献
9.
用乙酸锌和2-氨基苯并噻唑为原料在甲醇介质中反应制得了配合物[Zn(CH3COO)2(C7H6N2S)2],用元素分析、红外光谱、核磁共振氢谱和热重分析对其进行了表征,用X射线单晶衍射仪测定了其晶体结构,其晶体属于正交晶系,空间群为Pna2(1),晶胞参数分别为a=0.8547(3)nm,b=2.7586(8)nm,c=0.9066(3)nm,α=β=γ=90°,V=2.1376(11)nm3;Dc=1.503g/cm3;Z=4;F(000)=992;μ=1.375mm-1. 相似文献
10.
11.
William Clegg Jonathan T. Cressey Dale R. Harbron Brian P. Straughan 《Journal of chemical crystallography》1994,24(3):211-217
The crystal structures of [Zn(O2CC(CH3)CHCH3)2]x and [Zn2(O2CC(CH3)CHCH3)3-(O2CCHCHCH3)]x have been determined by single crystal X-ray diffraction. Both structures consist of chain polymers, in which pairs of zinc atoms are bridged alternately by three syn-syn carboxylates and by one syn-anti carboxylate. In the mixed carboxylate structure, the crotonate takes up preferentially the syn-anti bridge position. Vibrational and elemental analysis data indicate that the spontaneous solid-state reaction of zinc tiglate in air, accelerated for the tiglate and observable also for the mixed carboxylate compound by -ray or X-ray irradiation, gives an oxocentered tetranuclear complex [Zn4O(O2CR)6] rather than a polymerization through cross-linking of the unsaturated carboxylates. 相似文献
12.
13.
Reaction of 15-crown-5 or 18-crown-6 in 3:1 (v/v) CH3CN:CH3OH with Cd(NO3)2·4H2O followed by slow evaporation produces [Cd(NO3)2(15-crown-5)] or [Cd(NO3)2(18-crown-6)]. Crystals of [Cd(NO3)2(15-crown-5)] are orthorhombic with space group Pbca and cell parameters a = 13.562(5), b = 15.941(9), and c = 15.011(7) Å at 295 K. [Cd(NO3)2(18-crown-6)] crystallizes in the monoclinic space group C2/c with a = 11.235(2), b = 11.196(5), c = 15.385(3) Å, and = 99.89(2)° at 295 K. The metal center in [Cd(NO3)2(15-crown-5)] rests atop the macrocyclic donor array with two cis-bound nitrate anions and adopts a distorted tricapped trigonal prismatic geometry. [Cd(NO3)2(18-crown-6)] resides on an equatorial two-fold rotation axis with Cd2+ coordinated in the 18-crown-6 cavity and the nitrate anions oriented in twisted trans positions. 相似文献
14.
Boris Kamenar Branka Korpar-Čolig Maja Penavić Marina Cindrić 《Journal of chemical crystallography》1992,22(4):391-396
In the reaction of Mo2O3 (acac)4 and Mo2O3 (OAc)4 with thioacetylacetone two new complexes of molybdenum(V), Mo2O3 (acac)2(Sacac)2 (complexI) and Mo2O3(acac)3(Sacac) (complexII), respectively, have been prepared. Their crystal structures have been determined from single crystal diffractometer data and refined to the finalR values of 0.068 and 0.044, respectively. Both complexes crystallize in the tetragonal space groupI41/a with cell dimensions, (I):a=21.646(3),c=11.627(2) Å,D
calc=1.630 g cm–3,Z=8 and (II):a=21.240(3),c=11.688(2) Å,D
clac=1.644 g cm3–,Z=8 and have essentially the same structure. In the structure of (II) half of thioacetylacetone of (I) is statistically replaced by acetylacetone causing thus an occupational disorder in this region of the structure. Both complex molecules are dinuclear and have crystallographically imposed ¯1 symmetry with the bridging oxygen atom in the center of symmetry. Molybdenum atoms exhibit distorted octahedral coordinations. Sulfur atom of the Sacac ligand in (I) shows a considerably largertrans influence than the oxo-oxygen atom. 相似文献
15.
采用乙醇共沉淀法制备纳米Li[ Ni1/3 Co1/3 Mn1/3] O2材料.采用XRD和SEM对合成材料进行了表征.结果表明:合成材料的粒径为纳米级,平均粒径可达60 nm,此种方法合成材料具有较好的层状结构和较低的阳离子混排程度.在2.8 ~4.3 V(vs Li/Li+)条件下进行充放电测试,结果表明材料具有较好的电化学性能,尤其在高倍率下(10 C),材料的放电性能可以达到大功率用电设备的要求. 相似文献
16.
立方氮化铝纳米晶的溶剂热合成及其对二甲苯催化性质的研究 总被引:4,自引:0,他引:4
低温(280℃)条件下,通过二甲苯中AlCl3和NaN3的反应制备出了AlN纳米微粒.700℃退火48h后,得到了纯的立方相AlN纳米晶.通过XRD、FTIR和定域电子衍射分析,验证了立方相AlN纳米晶的生成.经XRD和TEM分析,纳米晶的平均粒度约为3nm.色质联(GC-MS)检测结果显示,由于AlN纳米颗粒对二甲苯的催化作用,使二甲苯发生聚合和杂化环反应,得到了二联苯、萘、蒽、三甲基咔唑及咔唑胺等多环芳烃.作为对比实验,分别研究了NaN3和AlCl3对二甲苯的催化性能,发现没有多环芳烃的生成. 相似文献
17.
Yun-Ming Sun Feng-Ying Dong Jian-Min Dou Da-Cheng Li Xi-Ke Gao Da-Qi Wang 《Journal of chemical crystallography》2006,36(5):315-319
An organic–inorganic hybrid polymeric complex, [BaPt(NCS)4(C20H36O6)(H2O)]
n
or [[Ba(DC18C6-A)(H2O)][Pt(SCN)4]]
n
(1) (DC18C6-A = cis-syn-cis-dicyclohexyl-18-crown-6) has been synthesized by the reaction of cis-syn-cis-dicyclohexyl-18-crown-6 with Ba(SCN)2, BaCO3 and H2PtCl4, and characterized by elementary analysis, FT-IR spectra and X-ray single-crystal diffraction. It crystallizes as monoclinic, space group P 21/n with crystallographic data: a = 14.275(6) ?, b = 13.165(5) ?, c = 18.971(8) ?, β = 106.294(6)°, V = 3422(2) ?3, Z = 4, D
calcd = 1.854 g/cm3, F(000) = 1856, R
1 = 0.0491, wR
2 = 0.0709. The asymmetric unit of complex 1 contains one [Ba(DC18C6-A)(H2O)]2+ complex cation and one [Pt(SCN)4]2− complex anion, which are assembled into an infinite polymeric chain via the bridging SCN groups. The coordinated water molecule gives two different intrachain and interchain hydrogen bonds. 相似文献
18.
水热条件下,合成了具有三维超分子结构的单核Pb(II)的含混合配体化合物[Pb(m-abc)2(phen)](m-abc=间氨基苯甲酸,phen=1,10-邻菲啰啉),并通过多种手段如X-射线单晶衍射、室温固体红外、元素分析和热重等对其进行了表征.X-射线单晶衍射的分析结果表明,化合物结晶于单斜晶系P21/c空间群,晶胞参数:a=0.80415 (10)nm,b=1.52987(19)nm,c=1.8330(2)nm,β=98.251(2)°,V=2.2317(5)nm3,Z=4.化合物中的Pb离子采用五配位模式PbO3N2,构成扭曲的四方锥构型.其内部通过各种N-H?O弱相互作用形成超分子结构.CCDC:983583. 相似文献
19.
采用水热法合成了Na_5[B_2P_3O_(13)](NBP)和BaAlBO_3F_2(BABF),确定了合成NBP的最佳反应条件,确立并分析了合成纯相BABF时反应物浓度的适宜配比及其对产物的影响.同时对合成的NBP和BABF进行了XRD、SEM及倍频效应等性质的表征. 相似文献