共查询到20条相似文献,搜索用时 31 毫秒
1.
Xiao‐Juan Xu 《Acta Crystallographica. Section C, Structural Chemistry》2014,70(11):1029-1032
A metal coordination polymer, {[Mn2Mo(CN)8(C12H8N6)(CH3CN)2(H2O)2]·2H2O}n, has been synthesized by the reaction of Mn(ClO4)2·6H2O with 3,6‐bis(pyridin‐2‐yl)‐1,2,4,5‐tetrazine (bptz) and (Bu3N)3[Mo(CN)8] at room temperature. The polymer was characterized by IR spectroscopy, elemental analysis and X‐ray diffraction, and the magnetic properties were also investigated. The X‐ray diffraction analysis reveals that the compound is a new three‐dimensional coordination polymer with a PtS‐type network. Magnetic investigation shows antiferromagnetic coupling between adjacent Mn2+ cations. 相似文献
2.
A new manganese(II) coordination polymer, [Mn3(atpt)3(2, 2′‐bpy)2]n ( 1 ) (H2atpt = 2‐aminoterephthalic acid; 2, 2′‐bpy = 2, 2′‐bipyridine), was synthesized by hydrothermal reaction of Mn(OAc)2, H2atpt, and 2, 2′‐bpy. It was structurally characterized by element analysis, IR spectroscopy, powder XRD, and magnetic measurements. X‐ray single‐crystal analysis was carried out for 1 , which crystallizes in the orthorhombic system, space group Pbca. The single X‐ray diffraction studies reveal that 1 consists of infinite layers of alternating trinuclear manganese subunits and H2atpt ligands. There are two types of different coordination modes of H2atpt in 1 . Magnetic susceptibility data for 1 were measured in the range 3–300 K. There are antiferromagnetic interactions between manganese ions of 1 . 相似文献
3.
Ya‐Qian Cheng Hong‐Ping Xiao Xin‐Hua Li Jia‐Guo Wang Ali Morsali Dr. 《无机化学与普通化学杂志》2007,633(8):1140-1142
The single crystal X‐ray analysis of a novel thiophene‐2,5‐dicarboxylic acid (H2Tda) Manganese(II) coordination polymer, {Mn2(μ3‐Tda)2(μ‐H2O)(H2O)2(bipy)]·DMF}n, shows two different types of Mn2+‐ions with environment of Mn1O6 and Mn2O4N2, and the complex is a two‐dimensional polymer as a result of bridging (Tda)2? ligands and by connecting the carboxylate‐ and water‐bridged {Mn2(μ‐Tda)2(μ‐H2O)} nodes. 相似文献
4.
Solvent‐Controlled Construction of Two 3D Manganese(II) Coordination Polymers Based on Flexible Tripodal Multicarboxylate Linker and Rod‐Shaped SBUs 下载免费PDF全文
To further explore the coordination possibilities of the flexible tripodal ligand, 4,4′,4′′‐(benzene‐1,3,5‐triyl‐tris(oxy))tribenzoic acid (H3BTTB), two solvent‐controlled three‐dimensional (3D) manganese(II) coordination polymers, [Mn3(BTTB)2(H2O)4](H2O)2 ( 1 ) and [Mn3(BTTB)2(DMF)2](DMF)2 ( 2 ), were synthesized and characterized. Single crystal X‐ray diffraction analysis indicates that in the MnII complexes the BTTB ligands exhibit two coordination modes, which have not been reported previously. Complexes 1 and 2 involve different one‐dimensional (1D) rod‐shaped metal–carboxylate secondary building units (SBUs). The 1D SBUs are further extended to afford two different three‐dimensional (3D) frameworks with similar flu topology via linkage of the BTTB ligands. The results demonstrate that the reaction solvent as well as conformation and coordination mode of BTTB ligands play key roles on the formation of the final framework structures. Additionally, their luminescent properties were investigated. 相似文献
5.
Two supramolecular architectures, [Mn(3‐bpd)2(NCS)2(H2O)2]·2H2O ( 1 ) and {[Mn(bpe)(NCS)2(H2O)2]·(3‐bpd)·(bpe)·H2O}n ( 2 ) [bpe = 1,2‐bis(4‐pyridyl)ethylene and 3‐bpd = 1,4‐bis(3‐pyridyl)‐2,3‐diaza‐1,3‐butadiene] have been synthesized and characterized by spectroscopic, elemental and single crystal X‐ray diffraction analyses. Compound 1 crystallizes in the monoclinic system, space group P21/c, with chemical formula C26H28Mn N10O4S2, a = 9.1360(6), b = 9.7490(6), c = 17.776(1) Å, β = 93.212(1)°, and Z = 2 while compound 2 crystallizes in the orthorhombic system, space group P212121, with chemical formula C38H36Mn1N10O3S2, a = 14.1902(6), b = 15.4569(7), c = 18.2838(8) Å, α = β = γ = 90°, and Z = 4. Structural determination reveals that the coordination geometry at Mn(II) in compound 1 or 2 is a distorted octahedral which consists of two nitrogen donors of two NCS?ligands, two oxygen donors of two water molecules, and two nitrogen donors of two 3‐bpd ligands for 1 and two dpe ligands for 2 , respectively. The two 3‐bpd ligands in 1 adopt a monodentate binding mode and the dpe in 2 adopts a bismonodentate bridging mode to connect the Mn(II) ions forming a 1D chain‐like coordination polymer. Both the π‐π stacking interactions between the coordinated and the free pyridyl‐based ligands and intermolecular hydrogen bonds among the coordinated and the crystallized water molecules and the free pyridyl‐based ligands play an important role in construction of these 3D supramolecular architectures. 相似文献
6.
Modular Construction,Structures, and Magnetic Properties of Two Manganese Coordination Polymers Based on 3,5‐Bis(2–carboxylphenoxy)benzoic Acid 下载免费PDF全文
Two manganese(II) coordination polymers, namely, [Mn1.5(BCB)(bpy)1.5(H2O)]n ( 1 ), and [Mn(HBCB)(bibp)2(H2O)] ( 2 ), were assembled from the mixed ligands of the flexible tripodal ligand of 3,5‐bis(2‐carboxylphenoxy)benzoic acid (H3BCB) and two rigid N‐donors [bpy = 4,4′‐bipyridine, and bibp = 4,4′‐bis(imidazolyl)biphenyl]. Their structures were determined by single‐crystal X‐ray diffraction analyses and further characterized by elemental analyses (EA), IR spectra, powder X‐ray diffraction (PXRD), and thermogravimetric (TG) analyses. Structural analysis reveals that complex 1 is a 3D (3,4,6)‐connected {5 · 62}2{56 · 64 · 7 · 82 · 92}{64 · 8 · 9} net based on two kinds of inorganic nodes of dinuclear {Mn2(COO)2} SBUs and Mn(2) ions. Complex 2 is a hydrogen bonds based 3D supramolecule with 6‐connected {412 · 63}‐ pcu net. Besides, the variable‐temperature susceptibilities of 1 and 2 were investigated. 相似文献
7.
Jin‐Peng Geng Prof. Dr. Zhao‐Xi Wang Qiong‐Fang Wu Ming‐Xing Li Prof. Dr. Hong‐Ping Xiao 《无机化学与普通化学杂志》2011,637(2):301-305
A new manganese(II) complex [Mn3(bidc)2(C2O4)(H2O)10]n ( 1 ) (bidc = benzimidazole‐5,6‐dicarboxylate) was synthesized and characterized by X‐ray crystallography. X‐ray diffraction shows that complex 1 has a neutral, one‐dimensional (1D) brick wall chain structure. With the intramolecular and intermolecular hydrogen bonding interactions, the adjacent chains are joined into a 3D suparmolecular architecture. IR spectroscopy and variable temperature magnetic susceptibility measurements were made, which indicated weak antiferromagnetic coupling between the MnII ions in complex 1 . 相似文献
8.
A new 3D hemidirected mixed‐ligand lead(II) coordination polymer with the ligand 1,2‐di(4‐pyridyl)ethane bpa) and the two metal coordinated anions nitrate and thiocyanate, [Pb2(bpa)2(SCN)3(NO3)]n ( 1 ), has been synthesized and characterized by CHN elemental analysis, IR‐, 1H‐ and 13C NMR spectroscopy. The single crystal X‐ray data of compound 1 show that the complex is a three‐dimensional coordination polymer with two different Pb atoms with stereoactive electron lone pairs and six‐ and five‐coordinate hemidirected geometries, respectively. 相似文献
9.
Hong‐Ping Xiao Xin‐Hua Li Ali Morsali Dr. Jia‐Guo Wang Wei‐Bing Zhang 《无机化学与普通化学杂志》2007,633(7):1107-1111
Two new two‐dimensional CuII and MnII coordination polymers of 5‐aminobenzene‐1,3‐dicarboxylic acid (abdc) ligand, [Cu(μ4‐abdc)(DMF)]n and {[Mn(μ4‐abdc)(H2O)]·H2O}n, have been synthesized and characterized by elemental analysis and IR‐ spectroscopy. The single crystal X‐ray analyses show that the coordination number in these complexes is six, CuO5Cu and MnO5N. The compounds are structurally diverse and the coordination polymer obtained from copper show significant copper–copper interaction while the manganese coordination polymer shows Mn–Namino bond. 相似文献
10.
Yin‐Lin Wang Ling‐Liang Long Jin‐Fang Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2015,71(6):435-439
A two‐dimensional MnII coordination polymer (CP), poly[bis[μ2‐2,6‐bis(imidazol‐1‐yl)pyridine‐κ2N3:N3′]bis(thiocyanato‐κN)manganese] [Mn(NCS)2(C11H9N5)2]n, (I), has been obtained by the self‐assembly reaction of Mn(ClO4)2·6H2O, NH4SCN and bent 2,6‐bis(imidazol‐1‐yl)pyridine (2,6‐bip). CP (I) was characterized by FT–IR spectroscopy, elemental analysis and single‐crystal X‐ray diffraction. The crystal structure features a unique two‐dimensional (4,4) network with one‐dimensional channels. The luminescence and nitrobenzene‐sensing properties were explored in a DMF suspension, revealing that CP (I) shows a strong luminescence emission and is highly sensitive for nitrobenzene detection. 相似文献
11.
Wei Zhang Shu‐Guang Qi Yu‐Quan Feng 《Acta Crystallographica. Section C, Structural Chemistry》2014,70(6):584-587
The title compound, [Sr7(C7H3NO4)6(SO4)(H2O)6]n, has been synthesized by an ionothermal method using the ionic liquid 1‐ethyl‐3‐methylimidazolium ([Emim]Br) as solvent, and characterized by elemental analysis, energy‐dispersive X‐ray spectroscopy, IR and single‐crystal X‐ray diffraction. The structure of the compound can be viewed as a three‐dimensional coordination polymer composed of Sr2+ cations, pyridine‐2,6‐dicarboxylate anions, sulfate anions and water molecules. The compound not only exhibits a three‐dimensional structure with a unique coordination mode of the sulfate anion, but also features the first example of a heptanuclear strontium(II) coordination polymer. The structure is further stabilized by O—H...O hydrogen bonds and π–π stacking interactions. 相似文献
12.
Three coordination compounds [Mn3(dmb)6(H2O)4(4, 4′‐bpy)3(EtOH)]n ( 1 ) and [M(dmb)2(pyz)2 (H2O)2] [MII = Co ( 2 ), Mn ( 3 )] (Hdmb = 2, 6‐dimethoxybenzoic acid, 4, 4′‐bpy = 4, 4′‐bipyridine, pyz = pyrazine) were synthesized and characterized by single‐crystal X‐ray diffraction analysis. Compound 1 consists of infinite 1D polymeric chains, in which the metal entities are bridged by 4, 4′‐bpy ligands. There are four crystallographically independent MnII atoms in the linear chain with different coordination modes, which is only scarcely reported for linear polymers. The isostructural crystals of 2 and 3 are composed of neutral mononuclear complexes. In crystal the complexes are combined into chains by intermolecular O–H ··· N hydrogen bonds and π–π interactions between antiparallel pyrazine molecules. 相似文献
13.
Judith Caballero‐Jimnez Yasmi Reyes Ortega Sylvain Berns Roberto Escudero 《Acta Crystallographica. Section C, Structural Chemistry》2014,70(8):754-757
The title complex, catena‐poly[di‐μ3‐acetato‐κ6O:O:O′‐tetra‐μ2‐acetato‐κ4O:O;κ4O:O′‐diaquabis(pyridine‐κN)trimanganese(II)], [Mn3(CH3COO)6(C6H5N)2(H2O)2]n, is a true one‐dimensional coordination polymer, in which the MnII centres form a zigzag chain along [010]. The asymmetric unit contains two metal centres, one of which (Mn1) lies on an inversion centre, while the other (Mn2) is placed close to an inversion centre on a general position. Since all the acetates behave as bridging ligands, although with different μ2‐ and μ3‐coordination modes, a one‐dimensional polymeric structure is formed, based on trinuclear repeat units (Mn1...Mn2...Mn2′), in which the Mn2 and Mn2′ sites are related by an inversion centre. Within this monomeric block, the metal–metal separations are Mn1...Mn2 = 3.36180 (18) Å and Mn2...Mn2′ = 4.4804 (3) Å. Cation Mn1, located on an inversion centre, displays an [MnO6] coordination sphere, while Mn2, on a general position, has a slightly stronger [MnO5N] ligand field, as the sixth coordination site is occupied by a pyridine molecule. Both centres approximate an octahedral ligand field. The chains are parallel in the crystal structure and interact via hydrogen bonds involving coordinated water molecules. However, the shortest metal–metal separation between two chains [5.3752 (3) Å] is large compared with the intrachain interactions. These structural features are compatible with a single‐chain magnet behaviour, as confirmed by preliminary magnetic studies. 相似文献
14.
To explore the coordination possibilities of fluorene‐based ligands, two manganese(II) complexes with the ligand 9,9‐dibutyl‐9H‐fluorene‐2,7‐carboxylate ( L ) were synthesized and characterized: [Mn2( L )2(DMF)3]∞ ( 1 ) and [Mn2( L )2(DMF)]∞ ( 2 ). X‐ray single‐crystal diffraction analyses show that complex 1 has a two‐dimensional (2D) (4,4) structure, whereas complex 2 consits of a three‐dimensional (3D) (4,5)‐connected topology framework. The results indicate that the steric bulk of the fluorene ring in H2 L plays an important role in the formations of 1 and 2 . Additional pyridine‐based ligands govern the formation of the final frameworks of 2 . Moreover, the luminescent properties of these complexes were briefly investigated. 相似文献
15.
Porous Metal‐organic Framework based on Strip‐shaped Manganese(II) Chains: Synthesis,Structure, and Magnetic Properties 下载免费PDF全文
The MnII‐based porous metal‐organic framework, [Mn3(btca)2(HCOO)(μ3‐OH)(H2O)2] · 2DMF ( 1 ) (H2btca = benzotriazole‐5‐carboxylate acid), was prepared by the solvothermal reaction of Mn(CH3COO)2 · 4H2O and H2btca, which was characterized by infrared spectroscopy, thermogravimetric analyses, and X‐ray crystallographic study. 1 exhibits 3D framework with 1D rectangle channels constructed by the strip‐shaped chains containing [Mn5(μ3‐OH)2(btca)4]– pentaclusters subunits. Furthermore, the magnetic measures show that 1 exhibits weak ferromagnetic behavior at low temperature. 相似文献
16.
Farzin Marandi Dr. Babak Mirtamizdoust Suchada Chantrapromma Hoong‐Kun Fun 《无机化学与普通化学杂志》2007,633(9):1329-1332
A 2D lead(II) coordination polymer [Pb2(phen)2(N3)3(ClO4)]n,( 1 ) containing 1,10‐phenanthroline (phen) and two different anions, has been synthesized and characterized by elemental analysis, IR and 1H NMR spectroscopy and X‐ray crystallography. The single‐crystal X‐ray data show two different kinds of Pb2+ ions with coordination numbers of eight, Pb1 = PbN6O2 and Pb2 = PbN8, with hemidirected and holodirected structures, respectively. The supramolecular features in 1 is negiotated through the weak but directional C‐H···O and C‐H···N interactions and aromatic π–π stacking interactions. 相似文献
17.
Two coordination compounds [Pb4(BDT)3(OH)2(H2O)4]·H2O ( 1 ) and [Mn(H2O)6]·(HBDT)2·2H2O ( 2 ) [H2BDT?5,5′‐(1,4‐phenylene)bis(1H‐tetrazole)] had been hydrothermally synthesized. 1 and 2 had been characterized by single‐crystal X‐ray diffraction, IR, elemental and thermal analyses. Structural analysis reveals that 1 exhibits 2D layer structure extended through BDT with two different coordination modes rings in transverse and vertical. 2 consists of [Mn(H2O)6]2+, free HBDT and water. In addition, 1 and 2 were explored as luminescent materials and additives to promote the thermal decomposition of ammonium perchlorate by differential scanning calorimetry. 相似文献
18.
Jingyan Zhu Shan Yan Hongping Xiao Jun Jiang Xinhua Li 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(7):877-882
High‐nuclearity metal clusters have received considerable attention not only because of their diverse architectures and topologies, but also because of their potential applications as functional materials in many fields. To explore new types of clusters and their potential applications, a new nickel(II) cluster‐based mixed‐cation coordination polymer, namely poly[hexakis[μ4‐(2‐carboxylatophenyl)sulfanido]di‐μ3‐chlorido‐tri‐μ2‐hydroxido‐octanickel(II)sodium(I)], [Ni8NaCl2(OH)3(C7H4O2S)6]n, 1 , was synthesized using nickel chloride hexahydrate and mercaptobenzoic acid (H2mba) as starting reactants under hydrothermal conditions. The material was characterized by single‐crystal X‐ray diffraction (SCXRD), Fourier transform IR spectroscopy, thermogravimetric analysis, powder X‐ray diffraction and X‐ray photoelectron spectroscopy analysis. SCXRD shows that 1 consists of a hexanuclear nickel(II) [Ni6] cluster, dinuclear NiII nodes and a mononuclear NaI node, resulting in the formation of a complex covalent three‐dimensional network. In addition, a tightly packed NiO/C&S nanocomposite is fabricated by sintering the coordination precursor at 400 °C. The uniform nanocomposite consists of NiO nanoparticles, incompletely carbonized carbon and incompletely vulcanized sulfur. When used as a supercapacitor electrode, the synthesized composite shows an extra‐long cycling stability (>5000 cycles) during the charge/discharge process. 相似文献
19.
20.
The 1D chain red luminescent europium coordination polymer: {[Eu2L6(DMF)(H2O)] · 2DMF · H2O}n ( I ) (L = 4‐chloro‐cinnamic acid anion, C9H6ClO2–, DMF = N, N‐dimethylformamide) was synthesized by the reaction of Eu(OH)3 and 4‐chloro‐cinnamic acid ligand. The structure of the coordination polymer was determined by single‐crystal X‐ray diffraction analysis. It reveals that there exists two crystallographically nonequivalent europium atoms in each unit of this coordination polymer and Eu3+ ions are connected by two alternating bridging modes to form an endless polymer structure. The luminescent properties and energy transfer process in the complex are investigated at room temperature. 相似文献