检索结果-南通市图书馆

Synthesis and Crystal Structure of an Azide Bridged Binuclear Zinc(II) Complex Including the Reduced Derivative of nitronyl nitroxide, [Zn(Him2Py)(N_3)_2]_2

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2004年第2期23卷 171-175页

作者：王利亚张晨曦廖代正姜宗慧阎世平 DepartmentofChemistry NankaiUniversityTianjin300071China StateKeyLaboratoryofCoordinationChemistry Nanjing210093China

The title compound [Zn(Him2Py)(N3)2]2 (Zn2C26H38N18O2, Mr = 765.48) has been prepared and structurally characterized by X-ray diffraction methods. It crystallizes in monoclinic, space group P21/n with a = 10.989(3), b = 11.519(3), c = 13.812(4) ? b = 101.700(5), V = 1711.9(9) ?, Z = 2, Dc = 1.485 g/cm3, m(MoKa) = 1.456 mm～1, F(000) = 792, the final R = 0.0401 and wR = 0.0861 for 2054 observed reflections with I>2s(I). The imino nitroxide 2-(3- methyl-2-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl (im2Py) was reduced to obtain 2-(3-methyl -2-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-1-ydroxy (Him2Py) coordinating to the zinc (II) ion, around which the coordination geometry is a square-based pyramid with a terminal nitrogen atom located at the apical position. The four basal sites are occupied by two m1,1 nitrogen atoms from two different bridging azide ions and two nitrogen atoms from Him2Py. The units of [Zn(Him2Py)(N3)2]2 were connected as two dimension planes by intermolecular hydrogen bonds.

关键词： crystal structure nitronyl nitroxide radical Zn(II) complex

Syntheses and Crystal Structures of Zinc(II) and Nickel(II) Complexes Involving Reduced nitroxide radicals

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2006年第2期25卷 209-213页

作者： JIANG Kai CHANG Jiu-Li WANG Li-Ya WANG Yu-Fang MA Lu-Fang College of Chemistry and Environmental Science Henan Normal University Xinxiang 453002 China Department of Chemistry Luoyang Normal University Luoyang 471022 China

Two novel complexes [Zn（Him-thz）2（NO3）]·NO3 1 and [Ni（Him-thz）2（NO3）]·NO3 2 （Him-thz = 2-（2＇-thiazole）-4,4,5,5-teramethyl-dihydro-1H-imidazolyl-1-hydroxy） have been prepared and structurally characterized by X-ray diffraction method. Both complexes crystallize in orthorho- mbic, space group P21 21 2, Z = 2. Crystal data for 1： ZnC20H30N8O8S2, Mr = 640.2, a = 13.1630（14）, b = 10.5149（11）, c = 10.6670（11） A°, V= 1476.4（3）A°^3, Dc = 1.440 g/cm^3, μ（MoKa） = 1.028 mm^-1, F（000） = 664, R = 0.0398 and wR = 0.0901 for 2131 observed reflections with I 〉 2σ（I）. Crystal data for 2： NiC20H30N8O8S2, Mr = 633.36, a = 13.1611（7）, b = 10.4833（6）, c = 10.6928（6） .4,, V = 1475.30（14）A°^3, Dc = 1.426 g/cm^3 ,μ（MoKa） = 0.854 mm^-1, F（000） = 660, R = 0.0281 and wR = 0.0797 for 3099 observed reflections with I 〉 2σ（I）. X-ray analysis reveals that the crystal structures consist of [M（Him-thz）2（NO3）]^＋（M = Zn, Ni） moiety and a NO3^- anion. Both Zinc（Ⅱ） and Nickel（Ⅱ） ions are six-coordinated with distorted octahedral geometries.

关键词： crystal structure nitronyl nitroxide radical Zn(Ⅱ) complex Ni(Ⅱ) complex

Synthesis, Crystal Structure and Magnetic Properties of a Novel Azide-bridged Copper(Ⅱ) Coordination Polymers Containing Nitroxy nitroxide

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2011年第9期30卷 1322-1326页

作者：王玉芳张永花王利亚 Department of Chemistry College of Chemistry and Chemical Engineering Luoyang Normal university

A novel azide-bridged copper（Ⅱ） coordination polymer, [Cu3（NITpPy）4（N3）6]n （NITpPy = 4-pyridyl-4,4,5,5-tetramethylimidazline-3-oxide-1-oxyl）, was structurally and magnetically characterized. It crystallizes in the triclinic space group P with a = 7.6932（10）, b = 14.5556（19）, c = 16.122（2） , α = 108.443（2）, β = 95.251（2）, γ = 104.236（2）°, V = 1631.7（4） 3, C48H64Cu3N30O8, Mr = 1379.87, Z = 1, Dc = 1.404 g/cm3, μ（MoKα） = 1.041 mm-1, F（000） = 713, the R = 0.0510 and wR = 0.1185 for 4285 observed reflections with I 2σ（I）. X-ray analysis reveals that the Cu（Ⅱ） ions are linked by nitrogen atom of μ1,1 azido ligands to form a Cu-Cu-Cu unit. The units are linked by μ1,3 azido ligands through a bridging style to form a one-dimensional coordination polymer. The variable-temperature magnetic susceptibility data of the complex show ferromagnetic interactions in the complex.

关键词： copper(Ⅱ) complex nitronyl nitroxide radical azido magnetic properties

Synthesis,Crystal Structure and Magnetic Properties of a Co(Ⅱ) Complex Containing 2′-(l′-Methyl)benzimidazolyl-substituted nitronyl nitroxide

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2011年第4期30卷 519-523页

作者：蒋凯孙小媛王利亚王玉芳 College of Chemistry and Environmental Science Henan Normal University College of Chemistry and Chemical Engineering Luoyang Normal University

A new complex [Co（NIT-1′-MeBzIm）2Cl2]（NIT-1′-MeBzIm = 2-{2′-[（l′-methyl）-benzimidazolyl]}-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide） has been prepared and structurally characterized by X-ray diffraction *** complex crystallizes in the monoclinic system,space group C2/c,Z = *** data：C30H38Cl2CoN8O4,Mr = 704.51,a = 17.074（3）,b = 21.350（3）,c = 11.6962（19）,β = 108.879（2）°,V = 4034.3（11）3,Dc = 1.160 g/cm3,μ（MoKα） = 0.597 mm-1,F（000） = 1468,R = 0.0422 and wR = 0.1141 for 2577 observed reflections with I 2σ（I）.X-ray analysis reveals that the Co（Ⅱ） ion is six-coordinated with a distorted octahedral *** dependence of susceptibility measurements shows the existence of antiferromagnetic interactions between the Co（Ⅱ） ion and the radicals（J =-52.88 cm-1）.

关键词： crystal structure nitronyl nitroxide radical Co(II) complex magnetic properties

Synthesis and Crystal Structure of a 1-D Coordination Polymer {[Cu(NIT4py)_2(ip)]·6H_2O}_n

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2006年第2期25卷 214-218页

作者： WANG Shu-Ping GAO Dong-Zhao LIAO Dai-Zheng JIANG Zong-Hui YAN Shi-Ping LI Li-Cun Department of Chemistry Nankai University Tianjin 300071 China State Key Laboratory of Structural Chemistry Fujian Instituteof Research on the Structure of MatterThe Chinese Academy of Sciences Fuzhou 350002 China

A new complex { [Cu（NIT4py）2（ip）]·6H2O }, （NIT4py=2-（4＂-pyridinyl）-4,4,5,5-tetra methylimidazoline-1-oxyl-3-oxide and ip = isophthalate dianion） has been synthesized and structurally characterized by X-ray diffraction. It crystallizes in orthorhombic, space group Cmcm with a = 25.161（3）, b =10.045（1）, c = 15.450（2） A°, C32H48N6O14CU, Mr = 804.30, V= 3904.8（8） ,A°^3, Z = 4, De = 1.368 g/cm^3, μ（MoKa） = 0.630 mm^-1, F（000） = 1692, the final R = 0.0326 and wR = 0.0787 for 1843 independent reflections with Rint = 0.0372. Each Cu（Ⅱ） ion is four-coordinated by two carboxylate oxygen atoms and two pyridyl-N atoms from NIT4py radicals to furnish a rhombus geometry. The central Cu（Ⅱ） ion is located at an inversion center and a crystallographic two-fold axis. Each isophthalate dianion binds two Cu（Ⅱ） ions in bis-monodentate mode, leading to a 1-D chain, a＇ these 1-D chains are further linked into a 2-D network via hydrogen-bonding interactions.

关键词： crystal structure nitronyl nitroxide radical copper(Ⅱ) coordination polymer isophthalate

A Novel Complex of Na(I)-nitronyl nitroxide [Na(NIT-1'-MeBzIm)_3]ClO_4: Synthesis and Crystal Structure

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2009年第1期28卷 67-71页

作者：王利亚杨瑞华蒋凯王玉芳 College of Chemistry and Chemical Engineering Luoyang Normal University College of Chemistry and Environmental Science Henan Normal University

A novel complex [Na（NIT-1＇-MeBzIm）3]ClO4 （NIT-1＇-MeBzIm = 2-{2＇-[（1＇- methyl）benzimidazolyl]}-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide） has been prepared and structurally characterized by elemental analysis, IR spectra and X-ray diffraction methods. The title complex crystallizes in trigonal, space group P3 and Z = 2. Crystal data： C45H57ClN12NaO10, Mr = 984.47, a = 13.9411（8）, b = 13.9411（8）, c = 14.8622（16） A, γ= 120°, V= 2501.5（3） A^3, Dc = 1.307 g/cm^3, μ（MoKα） = 0.152 mm^-1, F（000） = 1038, R = 0.0637 and wR = 0.1813 for 1957 observed reflections with I 〉 2σ（I）. X-ray analysis reveals that the Na（I） ion is six-coordinated with three NIT-1＇-MeBzlm radicals. As we know, three radicals coordinating to the Na（I） ion in the main group by a chelate way is the first example. The Na（I） ion resides in a distorted octahedron with a facial configuration. Meanwhile, the intermolecular weak interactions result in a 2-D double layer conformation where the uncoordinated perchlorate anions are inserted in the packing space and take part in the H-bond interactions, and each complex is connected with six neighboring complexes and three perchlorate anions.

关键词： crystal structure nitronyl nitroxide radical Na(I) complex

Synthesis and Crystal Structure of a nitronyl nitroxide Complex {[Zn(NIT4Py)(fum)(H_2O)_2]·H_2O}_n

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2009年第8期28卷 1023-1027页

作者：郭乐张旭红王玉肖王淑萍杨述韬 College of Chemistry & Material Science Hebei Normal University

The title compound {[Zn（NIT4Py）（fum）（HEO）2]·H2O}n, where NIT4Py = 2-（4＇- pyridinyl）-4,4,5,5-tetra-methylimidazoline-looxyl-3-oxide and fum = fumarate, has been prepared and structurally characterized by X-ray diffraction. It crystallizes in triclinic, space group P1^- with a = 6.9533（9）, b = 9.805（1）, c = 15.248（2） A, α= 94.608（2）, β = 92.328（2）, γ = 105.840（2）°, C16H24N3O9Zn, Mr = 467.75, V = 994.8（2） A^3, Z = 2, Dc = 1.562 g/cm^3,μ（MoKα） = 1.289 mm^-1, F（000） = 486, the final R = 0.0243 and wR = 0.0622 for 3505 independent reflections with Rint = 0.0125. The Zn（II） adopts a distorted five-coordinate triangle bipyramidal geometry. The basic framework structure of the complex is a 1-D chain. The intrachain hydrogen bonds are helpful to stabilize the 1-D chain structure. Furthermore, the chains are connected by O-H…O hydrogen bonds to give a 2-D double-layer network.

关键词： crystal structure nitronyl nitroxide radical Zn( II) complex fumaric acid

Synthesis,crystal structure and ferromagnetic properties of a new dicyanamide bridged dicopper(Ⅱ) complex with IM-1'-MeBzIm-κ2 N,O mode

在线全文

学校读者我要写书评

暂无评论

Synthesis,crystal structure and ferromagnetic properties of ...

A Novel Complex of Na（Ⅰ）-nitronyl nitroxide [Na（NIT-1'-MeBzlm）3]CIO4:Synthesis and Crystal Structure

中国化学会2008年中西部地区无机化学、化工学术交流会

作者： Jiang-Tao Cheng~(a,b) Li-Ya Wang~(a,b*) Kai Jiang~(b*) a Department of Chemistry,Luoyang Normal University,Luoyang 471022 b College of Chemistry and Environmental Science,Henan Normal University,Xinxiang 453002

The crystal structure of [Cu（NO）（IM-1'-MeBzlm）（dca）] (IM-1'-MeBzlm=2-{2'-[（Ⅰ'-methyl） benzimidazolyl]}-4,4,5,5-tetramethylimidazoline-l-oxyl,dca=dicyanamide anion)triclinic,space group P-l,Z=*** data:CHCuNO,Mr=927.90,a=9.440（5）,b=10.124（6）),c=11.603（7）(?),β= 94.033（6）°,V=1038.2（10）(?),D=1.484 g/cm,μ（MoKα）=1.093 mm,F（000）=478,R=0.0609 and wR=0.1512 for 2456 observed reflections with I>2σ（I）.The magnetic properties for the title complex has been investigated in the temperature range 2～300 K and there are ferromagnetic interactions between the coordinated nitronyl nitroxides(J=12.46 cm) and intramolecular ferromagnetic interactions.

关键词： crystal structure nitronyl nitroxide radical dicyanamide anion ferromagnetic interactions

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Novel Complex of Na（Ⅰ）-Nitronyl Nitroxide [Na（NIT-1'-M...