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1.
Crystallography Reports - A zinc coordination polymer with V-shaped ligands, [L1Zn(npa)]n (L1 = bis(4-(2'-methylimidazol)phenyl)sulfone, H2npa = 4-nitrophthalic acid) has been synthesized under... 相似文献
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Crystallography Reports - A coordination polymer with the V-shaped ligands, {Cd2(bipmo)2(bdc)2?H2O}n (1), (where bipmo is bis(4-(1H-imidazol-1-yl)phenyl)methanone; H2bdc is... 相似文献
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Crystallography Reports - A cobalt coordination polymer, {[Co(L1)2(H2O)2] · (HCOO)2 · H2O}n, where L1 is a bis(4-(1H-imidazol-1-yl)phenyl)methanone, has been synthesized and characterized... 相似文献
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Dan-Mei Dai You-Cheng Liu Hai-Bin Song Quan-Ming Wang Thomas C. W. Mak 《Journal of chemical crystallography》2004,34(1):67-72
The X-ray crystal structures of 1,1-di(p-methylphenyl)-2,2-dinitroethylene (2), 1,1-di(p-methoxylphenyl)-2,2-dinitroethylene (3), 1,1-di(p-fluorophenyl)-2,2- dinitroethylene (4), 1,1-di(p-chlorophenyl)-2,2-dinitroethylene (5), and 1-phenyl-1- (p-nitrophenyl)-2,2-dinitroethylene (6) are reported and compared with that of 1,1-diphenyl-2,2-dinitroethylene (1). Owing to steric repulsion between the aryl rings, the single bond lengths between C(1) and the two ring carbons atoms are longer than the normal sp2–sp2 bond distance of 1.46 Å. For 4–6 in which the aryl rings contain electron-withdrawing substituents (F, Cl, NO2), the double bonds between C(1) and C(2) are shorter than those in 2 and 3, whose aryl rings containing electron-donating substituents. Furthermore, the steric repulsion between the aryl rings and C
NO2 fragments results in an appreciable twist about the central double bond. The two aryl rings of compounds 1–6 make dihedral angles of 77.7, 66.6, 62.8, 80.9, 82.0, and 71.2°, and the two C
NO2 fragments make dihedral angles of 68.5, 67.8, 65.9, 76.9, 73.0, and 71.9°, respectively. 相似文献
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Crystallography Reports - A cobalt coordination polymer with V-shaped ligands, {[Co0.5(L1) ⋅ (C4H2O4)0.5] ⋅ 0.25H2O}n, (L1 = 4-(1H-imidazol-1-yl)phenyl)methanone, C4H2O4 =... 相似文献
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Abstract The new coordination polymer, [Cd(BIM)2(NO3)2]n, has been prepared from the reaction of bis(imidazol-1-yl) methane (BIM) with Cd(NO3)2 in methanol and water. The compound were characterized by single crystal X-ray diffraction and IR spectroscopy, it crystallizes
in the monoclinic space group C2/m with a = 14.400(3) ?, b = 9.3894(18) ?, c = 8.6926(17) ?, β = 123.499(2)°, V = 980.1(3) ?3, Z = 2. The Cd atoms are coordinated to four nitrogen atoms from four different BIM ligands and two nitrates to form a slightly
distorted octahedral geometry. Further, the BIM ligands act as a bridged ligand to form 1D infinite cationic double chain
with a 16-membered macrometallacyclic tetragonal box structure.
Graphical Abstract
Synthesis and Crystal Structure of a New Coordination Polymer from Cadmium and V-Shape Ligand Bis(imidazol-1-yl) methane
Chuan-Ming Jin*, Ling-Yan Wu, Zhen-Xing Zhong
A new coordination polymer with 1D infinite cationic double chain with a 16-membered macrometallacyclic tetragonal box structure
has been prepared from the reaction of bis(imidazol-1-yl) methane (BIM) and Cd(NO3)2.
相似文献
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以2-巯基乙磺酸钠为配体,2,2'-联吡啶,4,4'-联吡啶为辅助配体,与硝酸铜反应,得到一种一维链状配位聚合物 [CuL(4,4'-bipy)(2,2'-bipy)H2O]n (L=-O3S-CH2-CH2-S-S-CH2-CH2-SO-3),通过元素分析、红外光谱对其进行了表征,并用X射线衍射测定了其结构.结果表明:该配合物属于单斜晶系,P2(1)/c空间群,晶胞参数为:a=0.8385(2) nm,b=1.3764(3) nm,c=2.1719(5) nm,β = 93.391(3) °,V = 2.5023(10) nm3,Z = 4. 相似文献
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由1,4-二碘代苯出发,经过两步Sonogashira偶联反应合成了标题配合物2-甲基4.(4-(吡啶-3-乙炔基)苯基)-3-丁炔-2-醇.通过1H NMR、13C NMR核磁共振、Ⅹ-射线单晶衍射等手段对化合物的结构进行了表征.结果表明,该化合物晶体属于单斜晶系,空间群为P21/c.晶体学参数:a=3.3321 (4) nm,b=1.00539(11) nm,c=0.89158(10) nm,α =90.00°,β=92.442(2)°,y=90.00°,V=2984.2(6) nm3,Z =4. 相似文献
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Crystallography Reports - Two coordination polymers, {[L1Zn(adc)]2⋅5H2O}n (1), {[L1Cd(adc)]2⋅2.75H2O}n (2) (L1 = bis(4-(1H-imidazol-1-yl)phenyl)methanone, H2adc =... 相似文献
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Abstract
Solvothermal reaction of Er(NO3)3·6H2O and tri(2-carboxyethyl)isocyanurate (H3tci) in DMF/H2O (DMF = dimethylformamide) medium leads to the generation of one new 3D coordination polymer, [Er(tci)(H2O)] DMF·2H2O (1), which was characterized by the elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 crystallizes in triclinic space group P-1, features an interesting 3D coordination framework constructed from the flexible tridentate ligand H3tci. Unit cell parameters for 1: a = 7.853(2) ?, b = 12.186(3) ?, c = 13.222(2) ?, α = 112.156(14)°, β = 105.457(15)°, γ = 91.541(18)° and Z = 2. 相似文献15.
Abstract Bis(isothiocyanato)-bis(pyridine) zinc(II) crystal has been prepared at room temperature and characterized by elemental analysis,
IR spectrum and X-ray single crystal determination. The complex crystallizes in monoclinic space group P21/m with unit cell parameters: a = 5.5786(3), b = 11.0587(5), c = 12.1616(6) ?, β = 96.776(3)°, V = 745.03(6) ?3, Z = 2, D
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= 1.514 g cm−3. The X-ray structure determination has revealed that the crystal is centered-symmetrical and the crystallographic symmetry
face runs the two isothiocyanate ligands and the Zn(II) cation.
Index Abstract The title compound, bis(isothiocyanato)-bis(pyridine) zinc(II), was synthesized by zinc compound, KSCN and C5H5N (pyridine) and its crystal structure was determined. Single crystal X-ray structure determination reveals that the crystal
is centered-symmetrical, and the crystallographic symmetry face runs the two isothiocyanate ligands and the Zn(II) cation.
相似文献
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用N-氨乙基哌嗪与醋酸锌反应合成了一种新颖的一维锌配位聚合物,采用红外光谱、元素分析、热重分析和X射线单晶衍射对其结构进行了表征和分析.该配位聚合物属于三斜晶系,空间群为Pī,晶体学参数为a=0.69461(13) nm,b=1.00951 (19) nm,c=1.0751(2) nm,α=117.576(3)°,β=93.506(3)°,γ=94.231(3)°,V=0.6625 (2) nm3,Z=2.在等量三乙胺存在下,该配位聚合物具有良好的催化性能.研究结果表明:当催化剂用量为5mol;时,在甲醇中催化对硝基苯甲醛与硝基甲烷反应可以得到94;产率的1-对硝基苯基-2-硝基乙醇产物. 相似文献
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新型配位聚合物[Ni(C6H4NO2)2(H2O)4]n的水热合成和晶体结构 总被引:4,自引:4,他引:0
以NiCl2·6H2O和4-氰基吡啶为原料,在中温水热反应条件下,合成了一种新型配位聚合物[Ni(C6H4NO2)2(H2O)4]n单晶体,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.该配位聚合物属三斜晶系,P-1空间群,a=0.6298(4)nm,b=0.6907(4)nm,c=0.9243(5)nm,α=96.437(8)°,β=105.184(9)°,γ=113.314(9)°,V=0.3456(3)nm3,Z=2,dc=1.802 g/cm3,μ=1.452mm-1,F(000)=194,R1=0.0309,R2=0.0753.该晶体通过配位键的连接和分子间氢键相互作用形成三维的网状结构. 相似文献
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以3-羟基-2-吡啶苯甲酸(H2L)和Cu(NO3)2·6H2O为原料,通过溶剂热反应得到了一个新的配位聚合物[Cu(HL)2·C2H5OH]n(1).通过X-射线单晶衍射、元素分析、红外光谱(FT-IR)、热重分析(TG-DTA)和固态漫反射光谱(UV-Vis)等实验手段对配合物进行了表征.结果表明,配合物1结晶于单斜晶系,P21/c空间群.最小结构单元中包含一个铜离子与四个有机配体,形成六配位模式,并进一步通过有机配体的羧基和羟基基团桥接,形成了二维平面结构.配合物1具有半导体性质,带隙能(Eg)为3.01 eV.光催化性能测试结果表明,配合物1对染料亚甲基蓝(MB)和甲基橙(MO)均具有催化降解效果,在紫外光照射下120 min和180 min内,对二者的降解率分别为92.6;和45.4;.配合物1还具有良好的循环再生性,重复使用5次后仍能保持对MB分子的光催化活性基本不变. 相似文献
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Crystallography Reports - A cobalt coordination polymer with the formula of {[Co(L1)(pa)]}n (1) (L1 = bis(4-(1H-benzo[d]imidazol-1-yl)phenyl)methanone, H2pa = phthalic acid) was synthesized under... 相似文献
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Peng-Cheng Lv Kai-Rui Wang Wen-Jun Mao Rui-Qin Fang Jin Chen Jing Xiong Hai-Liang Zhu 《Journal of chemical crystallography》2009,39(12):927-930