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国家自然科学基金(21173157)

作品数:5 被引量:6H指数:2
相关作者:刘茜赵小军杨恩翠张超更多>>
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5 条 记 录,以下是 1-10
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一个由过氧根阴离子聚集的混金属六核{DyⅢ3NiⅡ3}磁性配合物
近几年来,高核3d-4f混金属配合物由于其迷人的结构框架而引起了人们广泛的关注。本文以甲基吡嗪肟(mpkoH)为配体,与无机NiⅡ和DyⅢ盐通过常温挥发的方法合成了一个新颖的六核配合物,{[Dy3Ni3(H2O)3(mp...
董慧明杨恩翠赵小军
关键词:反铁磁相互作用
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两个混唑配体摩尔比调控的配位聚合物
近年来,金属-有机框架化合物由于新颖的拓扑结构以及在气体储存和分离、荧光等领域潜在的应用而成为材料科学和超分子化学中最活跃的研究课题之一[1]。本文以1-H-1,2,3-三唑(Hta),1-H-1,2,4-三唑(Htrz...
张媛媛杨恩翠赵小军
关键词:镉离子晶体结构
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A New Pillared-layer Framework with Rare Mn(Ⅱ)-triazole-carboxylate Magnetic Layer Exhibiting an Antiferromagnetic Ordering被引量:3
2012年
A novel pillared-layer framework with a (52.6)(53.63.73.8) Schlaifli symbol, [Mn(H2O)(Htrc)(Hbtc)]n (1), was prepared by the reaction of 1,2,4-triazole (Htrz), 1,3,5-benzene- tricarboxylic acid (H3btc), and MnII salt and structurally and magnetically characterized. It crystallizes in the orthorhombic system, space group P212121 with a = 7.1618(5), b = 9.0356(6), c = 10.9740(13) A, V = 1292.54(15) A3, Dc = 1.799 g/cm3, Mr = 350.15, Z = 4, F(000) = 708, p = 1.064 mm-1, and the final R = 0.0177 and wR = 0.0462 for 2273 observed reflections with I〉 2σ(I). The unique octahedral Mnn ion in 1 is periodically linked into a two-dimensional (2D) magnetic layer by p2-N1, N4-Htrz and syn, anti-COO of doubly deprotonated Hbtc2- anion, which is further supported by the phenyl backbone of Hbtc2- ligand to generate a 3D pillared-layer framework. Magnetically, complex 1 displays an antiferromagnetic ordering below 5.0 K due to the cooperative antiferromagnetic couplings mediated by the mixed heterobridges within the magnetic layer.
张媛媛王修光刘忠义梁青青赵小军杨恩翠
关键词:1,2,4-TRIAZOLE
Synthesis, Structure and Magnetic Property of a New MOF with Triazolate and Azido Heterobridges
2014年
A new magnetic MOF with cyclic triazolate and linear azido mediators, [Co2(trz)3fN3)], 1 (trz- = 1,2,4-triazolate), was hydrothermally synthesized and structurally and magnetically characterized. 1 crystallizes in the rhombohedral P63/mmc space group with a = b = 10.0716(17), c = 7.5860(14) A, V = 666.4(2) A3, Dc = 1.814 g/cm3, Mr = 364.09, Z = 2, F(000) = 360,μ = 2.499 mm-1, the final R = 0.0676 and wR = 0.1952 for 229 observed reflections with 1 〉 20(/). Complex 1 consists of linear {Co(trz)3}n chains passing through a C6 rotation axis, which are interconnected with tetrahedral Con ion by μ3-trz- ligands into a hexagonal three-dimensional antiferromagnetic framework.
王晔赵虹刘忠义杨恩翠赵小军
关键词:AZIDEMAGNETISM
一个基于肟类配体的混价Mn~Ⅱ/Mn~Ⅲ金属配位聚合物
近年来,由于肟类配体能够与各种各样的过渡金属形成高核簇且能产生有趣磁性而引起了人们的广泛的关注。本文以α-甲基吡嗪肟(mpkoH)为主配体,三羟基甲基丙烷(H3tmp)和乙酸钠为辅助体,与过渡金属锰(Ⅱ)盐通过常温挥发法...
李洪雪杨恩翠赵小军
关键词:磁性反铁磁
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一个具有单分子磁体行为的异四核{Dy2Ni2}金属簇
3d-4f单分子磁体因其在高密度信息储存、量子计算机、自旋电子学器件等方而的潜在应用而成为当前分子磁学研究的热点。本文通过水热法合成了一个基于苯甲酸(PhCOOH)和2,2′-联吡啶(bipy)为混合配体的异金属四核簇[...
李言杨恩翠赵小军
关键词:单分子磁体信息储存
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一个具有慢磁弛豫行为的Dy~Ⅲ-Ni~Ⅱ异双核金属簇
3d-4f分子基磁性配合物因其在分子基磁性、气体吸附和分离、离子识别及催化等方而的潜在应用而引起了人们广泛的关注。本文以间甲基苯甲酸(Hmb)和邻菲罗啉(phen)为混合配体,引入具有强磁各向异性的稀土金属离子DyⅢ和过...
尚秋杨恩翠赵小军
关键词:磁弛豫
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Synthesis,Structure and Magnetism of Two Cu(Ⅱ) 4,5-Dichlorophthalate Complexes
2015年
Two 4,5-dichlorophthalate-based metal complexes, {[Cu(bipy)(dcpa)].H2O}n, (1) and {[Cu2Coipy)2(Hdcpa)3]·H2O·C2H5OH.Hdcpa} (2, H2dcpa = 4,5-dichlorophthalic acid and bipy = 2,2'-bipyridine), were synthesized and characterized structurally and magnetically. Complex 1 is of orthorhombic system, space group Fdd2 with a = 20.5821(8), b = 20.9013(12), c = 17.0270(7) A, V= 7324.9(6) A3, Dc = 1.707 g/cm3, Mr = 470.74, Z = 16, F(000) = 3792, p = 1.519 mm^-1, the final R = 0.0223 and wR = 0.0549 for 9239 observed reflections with I〉 2σ(I). Complex 2 crystallizes in triclinic, space group P1 with a = 14.1439(12), b = 14.2981(12), c = 15.1054(14) A, a = 72.121(2), β = 77.703(2),γ = 81.829(2)°, V= 2830.9(4) A3, Dc = 1.689 g/cm3, M,. = 1439.55, Z = 2, F(000) = 1452,μ = 1.207 mm^-1, the final R = 0.0536 and wR = 0.0981 for 16422 observed reflections with 1 〉 2σ(I). Complex 1 exhibits a diamond-like framework with centrosymmetric binuclear subunits extended by pairs of doubly deprotonated dcpa2- linkers. By contrast, 2 is an asymmetric binuclear entity bridged by carboxylate group of mono deprotonated Hdcpa- ligands. Weak anti- and ferromagnetic interactions are respectively mediated in the carboxylate aggregated binuclear subunits of 1 and 2.
崔红旺夏燕飞项炘欣秦绍恒杨恩翠
关键词:MAGNETISM
Syntheses, Crystal Structures and Fluorescence Properties of Two Pb(Ⅱ) 1-Naphthoate Complexes被引量:1
2012年
Two new 1-naphthoate-based Pb(Ⅱ) complexes, [Pb(phen)(NA)2]n 1 and [Pb(bpp)(NA)2]n 2 (NA = 1-naphthoate, phen = 1,10-phenanthroline, and bpp = 1,3-bi(4-pyri- dyl)propane), were hydrothermally synthesized and structurally characterized. 1 is of monoclinic system, space group C2/c with a = 28.114(3), b = 10.9601(10), c = 8.6843(8) , β = 93.3760(10)°, V = 2671.3(4) 3, Dc = 1.814 g/cm3, Mr = 729.73, Z = 4, F(000) = 1416, μ = 6.360 mm-1, the final R = 0.0346 and wR = 0.0948 for 2184 observed reflections with I 〉 2σ(I). Complex 2 crystallizes in monoclinic, space group C2/c with a = 26.491(2), b = 8.7773(6), c = 27.893(2) , β = 113.3020(10)°, V = 5956.8(8)3, Dc = 1.668 g/cm3, Mr = 747.78, Z = 8, F(000) = 2928, μ = 5.706 mm-1, the final R = 0.0211 and wR = 0.0493 for 3677 observed reflections with I 〉 2σ(I). Both complexes present one-dimensional (1-D) zigzag chains extended by anionic NA linkers for 1 and bridged by neutral bpp connectors for 2, which are further aggregated into 2-D supramolecular networks by interchain π···π stacking interactions. In addition, the two solid-state complexes exhibit different strong emissions at room temperature, suggesting their potential applications as fluorescence materials.
侯照君王修光戴沛霞杨恩翠
基于三角形磁格的钴配合物的合成、结构及磁性能研究
反铁磁三角形磁格由于其固有的自旋阻挫可形成不寻常的量子自旋液体或自旋冰,受到了越来越广泛的关注[1]。本文通过溶剂热方法,成功的把己二酸(H2apc)引入到四氮唑(Htz)体系中合成了一个由己二酸支撑的三维层柱结构的金属...
侯照君杨恩翠赵小军
关键词:磁性
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