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1.
Ana María Atria Ricardo Baggio María Teresa Garland Piedad Corts 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):m311-m314
The three title compounds, namely 4‐phenyl‐1H‐imidazolium hexa‐μ2‐chloro‐chloro‐μ4‐oxo‐tris(4‐phenyl‐1H‐imidazole‐κN1)tetracopper(II) monohydrate, (C9H9N2)[Cu4Cl7O(C9H8N2)3]·H2O, hexa‐μ2‐chloro‐μ4‐oxo‐tetrakis(pyridine N‐oxide‐κO)tetracopper(II), [Cu4Cl6O(C5H5NO)4], and hexa‐μ2‐chloro‐tetrakis(2‐methyl‐1H‐imidazole‐κN1)‐μ4‐oxo‐tetracopper(II) methanol trisolvate, [Cu4Cl6O(C4H6N2)4]·3CH4O, exhibit the same Cu4OCl6 framework, where the O atom at the centre of an almost regular tetrahedron bridges four copper cations at the corners. This group is in turn surrounded by a Cl6 octahedron, leading to a rather globular species. This special arrangement of the CuII cations results in a diversity of magnetic behaviours. 相似文献
2.
Ying‐Hong Lu Hoong‐Kun Fun Suchada Chantrapromma Ibrahim Abdul Razak Zhen Shen Jing‐Lin Zuo Xiao‐Zeng You 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):911-913
The title dinuclear di‐μ‐oxo‐bis[(1,4,8,11‐tetraazacyclotetradecane‐κ4N)manganese(III,IV)] diperchlorate nitrate complex, [Mn2O2(C10H24N4)2](ClO4)2(NO3) or [(cyclam)MnO]2(ClO4)2(NO3), was self‐assembled by the reaction of Mn2+ with 1,4,8,11‐tetraazacyclotetradecane in aqueous media. The structure of this compound consists of a centrosymmetric binuclear [(cyclam)MnO]3+ unit, two perchlorate anions and one nitrate anion. While the low‐temperature electron paramagnetic resonance spectra show a typical 16‐line signal for a di‐μ‐oxo MnIII/MnIV dimer, the magnetic susceptibility studies also confirm a characteristic antiferromagnetic coupling between the electronic spins of the MnIV and MnIII ions. 相似文献
3.
Ana María Atria María Teresa Garland Ricardo Baggio Piedad Corts 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):m297-m302
Two new oxo complexes, namely hexa‐μ2‐acetato‐acetatoaquabis(di‐3‐pyridylamine)di‐μ3‐oxo‐tetrairon(III) chloride monohydrate ethanol 1.25‐solvate, [Fe4(C2H3O2)7O2(C10H9N3)2(H2O)]Cl·1.25C2H6O·H2O, (I), containing a tetranuclear [Fe4(μ3‐O)2]8+ unit, and 2‐methylimidazolium hexa‐μ2‐acetato‐acetatodiaqua‐μ3‐oxo‐triiron(III) chloride dihydrate, (C4H7N2)[Fe3(C2H3O2)7O(H2O)2]Cl·2H2O, (II), with a trinuclear [Fe3(μ3‐O)]7+ unit, are presented. Both structures are formed by two well differentiated entities, viz. a compact isolated cluster composed of FeIII ions coordinated to O2− and CH3CO2− anions, and an external group formed by a central Cl− ion surrounded by different solvent groups to which the anion is bound through hydrogen bonding. In the case of (I), charge balance cannot be achieved within the groups, so the structure is macroscopically ionic; in the case of (II), in contrast, each group is locally neutral owing to the internal compensation of charges. The trinuclear complex crystallizes with the metal cluster, chloride anion and 2‐methylimidazolium cation bisected by a crystallographic mirror plane. 相似文献
4.
Lionel Moisan Thierry Le Borgne Pierre Thury Michel Ephritikhine 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m98-m101
In bis[1,1′,2,2′,3,3′,4,4′‐octamethyl‐5‐(2‐pyridinio)‐5′‐(2‐pyridyl)ferrocene] di‐μ3‐chloro‐hexadeca‐μ2‐chloro‐hexachlorodi‐μ4‐oxo‐di‐μ3‐oxo‐bis[(η5,κN)‐1,2,3,4‐tetramethyl‐5‐(2‐pyridyl)cyclopentadienyl]octauranium(IV) dichloromethane tetrasolvate, [Fe(C14H17N)(C14H16N)]2[U8Cl24O4(C14H16N)2]·4CH2Cl2, (I), two protonated Fe(cp*py)2 units [cp*py is tetramethyl‐5‐(2‐pyridyl)cyclopentadiene] form an ion pair with the dianionic centrosymmetric cluster U8Cl24O4(cp*py)2. The latter is the highest nuclearity assemblage in the chemistry of uranium (non‐uranyl) compounds reported to date. 相似文献
5.
Adailton J. Bortoluzzi Ademir Neves Ricardo A. A. Couto Rosely A. Peralta 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m27-m29
The synthesis and characterization of a new unsymmetrical dinucleating N,O‐donor ligand, 2‐[N,N‐bis(2‐pyridylmethyl)aminomethyl]‐6‐[N‐(3,5‐di‐tert‐butyl‐2‐oxidobenzyl)‐N‐(2‐pyridylamino)aminomethyl]‐4‐methylphenol (H2Ldtb), as well as the X‐ray crystal structure of its corresponding mixed‐valence diacetate‐bridged manganese complex, di‐μ‐acetato‐μ‐{2‐[N,N‐bis(2‐pyridylmethyl)aminomethyl]‐6‐[N‐(3,5‐di‐tert‐butyl‐2‐oxidobenzyl)‐N‐(2‐pyridylamino)aminomethyl]‐4‐methylphenolato}dimanganese(II,III) tetraphenylborate, [MnIIMnIII(C42H49N5O2)(C2H3O2)2](C24H20B), are reported. The complex may be regarded as an interesting structural model for the mixed‐valence MnII–MnIII state of manganese catalase. 相似文献
6.
Jianli Lin Deping Cheng Yueqing Zheng Duanjun Xu Yuanzhi Xu 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(5):523-524
In the title MnII complex, [Mn2(C10H2O8)(H2O)10]·H2O, two independent binuclear molecules bridged by the 1,2,4,5‐benzenetetracarboxyl anion exist in a unit cell, with each anion lying about an inversion centre. One of the Mn—Owater distances [2.2922 (13) Å] is significantly longer than the MnII—Owater distances reported so far for MnII complexes and very close to the Mn—Owater distances found in the axial direction of MnIII complexes. 相似文献
7.
Xiao‐Yuan Wu Quan‐Guo Zhai Li‐Juan Chen Can‐Zhong Lu 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m261-m263
The title complex, poly[di‐μ3‐oxo‐hepta‐μ2‐oxo‐tetraoxobis(1,10‐phenanthroline)‐μ4‐terephthalato‐dicopper(II)tetramolybdate(VI)], [Cu2Mo4(C8H4O4)O13(C12H8N2)2], represents a novel two‐dimensional copper–molybdate compound with mixed ligands. Tetranuclear molybdenum oxide clusters are joined through corner‐sharing into a ribbon‐like chain, with [Cu(phen)]2+ (phen is 1,10‐phenanthroline) complexes grafted onto either side. The terephthalate ligand lies about an inversion centre and links these chains to form a layer via Cu—O and Mo—O bonds. Face‐to‐face π–π stacking interactions between adjacent phen ligands stabilize the structure. 相似文献
8.
Xu‐Xiu Yan Li‐Ping Lu Miao‐Li Zhu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(5):m221-m223
The crystal structure of the title compound, tetrachloro[μ‐1,1,4,7,7‐pentakis(1H‐benzimidazol‐2‐ylmethyl)‐1,4,7‐triazaheptane]dimanganese(II) methanol pentasolvate tetrahydrate, [Mn2Cl4(C44H43N13)]·5CH4O·4H2O, contains an asymmetric dinuclear MnII–DTPB [DTPB is 1,1,4,7,7‐pentakis(1H‐benzimidazol‐2‐ylmethyl)‐1,4,7‐triazaheptane] complex with an intra‐ligand bridging group (–NCH2CH2N–), as well as several solvate molecules (methanol and water). Both MnII cations have similar distorted octahedral coordination geometries. One MnII cation is coordinated by a Cl− anion and five N atoms from the ligand, and the other is coordinated by three Cl− anions and three N atoms of the same ligand. The Mn⋯Mn distance is 7.94 Å. A Cl⋯H—O⋯H—O⋯H—N hydrogen‐bond chain is also observed, connecting the two parts of the complex. 相似文献
9.
Ming‐Xue Li Peng‐Tao Ma Jing‐Ping Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m604-m606
The title compound, bis[tris(2,2′‐bipyridine)iron(II)] tetraaquatetra‐μ4‐oxo‐pentacosa‐μ2‐oxo‐undecaoxoiron(III)sodium(I)dodecatungsten(VI) dihydrate, [Fe(C10H8N2)3]2[NaFeW12O40(H2O)4]·2H2O, consists of a dodecatungstoferrate(III) framework grafted on to an [Na(H2O)4]+ cation, two complex [Fe(2,2′‐bipy)3]2+ cations (2,2′‐bipy is 2,2′‐bipyridine) and two uncoordinated water molecules per formula unit. 相似文献
10.
Dale C. Swenson Samuel Dagorne Richard F. Jordan 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):1213-1215
The crystal structure of hexa‐μ‐hydroxo‐dodecamethylocta‐μ3‐oxo‐dodecagallium(III) bis[tetrakis(pentafluorophenyl)borate(III)] chlorobenzene disolvate dihydrate, [Ga12(CH3)12(μ3‐O)8(μ‐OH)6](C24F20B)2·2C6H5Cl·2H2O, is reported. The gallium–oxo–hydroxide dication is located on an inversion center and adopts a cage structure composed of 12 fused Ga3O3 rings and is associated with the hydrate molecules and the [B(C6F5)4]? anions through hydrogen bonds and one O—H?π‐ring interaction. Disordered chlorobenzene solvent molecules are also present in the crystal structure. 相似文献
11.
Guo‐Qing Bian Takayoshi Kuroda‐Sowa Hisashi Konaka Masahiko Maekawa Megumu Munakata 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m338-m340
The title compound, [Mn2(μ‐O)(C6H3NO3)2(C5H5N)4]·H2O, was isolated from the reaction of 2,6‐pyridinedicarboxylic acid with [Mn12O12(CH3COO)16(H2O)4] in pyridine. The dimanganese complex has twofold symmetry; the MnIII atoms are bridged by one oxo and two amidate ligands and show compressed octahedral Jahn–Teller distortion. The molecular packing comprises a three‐dimensional structure constructed by means of extensive intermolecular interactions, including three kinds of hydrogen bonds and π–π interactions. 相似文献
12.
Andrea Cornia Antonio Costantino Fabretti Roberta Sessoli Lorenzo Sorace Dante Gatteschi Anne‐Laure Barra Carole Daiguebonne Thierry Roisnel 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m371-m373
The structure of hexadeca‐μ‐acetato‐tetraaquadodeca‐μ3‐oxo‐dodecamanganese bis(acetic acid) tetrahydrate, [Mn12O12(CH3COO)16(H2O)4]·2CH3COOH·4H2O, known as Mn12–acetate, has been determined at 83 (2) K by X‐ray diffraction methods. The fourfold (S4) molecular symmetry is disrupted by a strong hydrogen‐bonding interaction with the disordered acetic acid molecule of solvation, which displaces one of the acetate ligands in the cluster. Up to six Mn12 isomers are potentially present in the crystal lattice, which differ in the number and arrangement of hydrogen‐bonded acetic acid molecules. These results considerably improve the structural information available on this molecular nanomagnet, which was first synthesized and characterized by Lis [Acta Cryst. (1980), B 36 , 2042–2046]. 相似文献
13.
Nicholas C. Norman A. Guy Orpen Michael J. Quayle Edward G. Robins 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):50-52
The structure of trans‐(bromo/chloro)hydridotetrakis(tri‐methylphosphine)rhodium(III) bis(tetrabromopyrocatechol‐ato‐O,O′)borate dichloromethane solvate, [RhCl0·74Br0·26H‐(C3H9P)4](C12BBr8O4)·CH2Cl2, is reported. The RhIII complex shows bromine/chlorine compositional disorder with a trans arrangement of the hydride and halide ligands. The anion has approximate D2d symmetry, with a central spiro‐B atom distorted from regular tetrahedral geometry by the small chelating O—B—O angles. 相似文献
14.
Neven Strukan Marina Cindri Tanja Kajfe Boris Kamenar Gerald Giester 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e443-e444
The crystal and molecular structure of bis(tetramethylammonium) dichlorotetra‐μ2‐methoxo‐di‐μ2‐oxo‐octooxotetramolybdate(VI), (C4H12N)2[Mo4O10(OCH3)4Cl2], has been determined from X‐ray diffraction data. The crystallographically centrosymmetric anion is built up of four edge‐sharing octahedra, two MoO6 and two MoO5Cl. 相似文献
15.
Lucjan B. Jerzykiewicz Jzef Utko Piotr Sobota 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(11):m501-m503
The molecule of the title compound, [Mn4Al(CH3)2(C3H7O2)4I5(C4H8O)], contains one AlIII and four MnII ions. Two Mn atoms are five‐coordinate in the form of a trigonal bipyramid or a square pyramid. The two other Mn atoms are six‐coordinate with an octahedral geometry. The fourcoordinate Al atom is linked to the manganese core by μ‐Oalkoxo bridges, forming an almost planar five‐membered ring. 相似文献
16.
Thierry Le Borgne Pierre Thury Michel Ephritikhine 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(1):m8-m9
The ligand 1,2,3,4‐tetramethyl‐5‐(2‐pyridyl)cyclopentadiene (cp*py) forms a dinuclear complex with UIV, i.e. di‐μ‐oxo‐bis{chloro(diethyl ether‐κO)[(η5,κN)‐1,2,3,4‐tetramethyl‐5‐(2‐pyridyl)cyclopentadienyl]uranium(IV)}, [U2Cl2O2(C14H16N)2(C4H10O)2], in which cp*py acts as a chelating ligand, being bound to the metal atom by the cyclopentadienyl unit and also by the N atom of the pyridyl ring. 相似文献
17.
Martin U. Schmidt Edith Alig Lothar Fink Michael Bolte Robin Panisch Volodymyr Pashchenko Bernd Wolf Michael Lang 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(7):m361-m364
Double‐layer structures consisting of alternating polar and non‐polar layers have been prepared using Mn2+ ions and o‐hydroxynaphthoic acids. The polar layers contain the Mn2+ ions, carboxylate groups, hydroxy groups and water molecules. The non‐polar layers are built up from the naphthalene moieties. In catena‐poly[[diaquamanganese(II)]bis(μ‐3‐hydroxy‐2‐naphthoato‐κ2O:O′)] (also called manganese 3‐hydroxy‐2‐naphthoate dihydrate), [Mn(C11H7O3)2(H2O)2]n, (I), the Mn2+ ions are connected by carboxylate groups to form two‐dimensional networks. This compound shows distinct antiferromagnetic interactions and long‐range ordering at low temperature. In contrast, tetraaquabis(1‐hydroxy‐2‐naphthoato‐κO)manganese(II), [Mn(C11H7O3)2(H2O)4], (II), which lacks a close linkage between the Mn2+ ions, reveals purely paramagnetic behaviour. In (II), the Mn2+ ion lies on an inversion centre. 相似文献
18.
David Martínez Majid Motevalli Michael Watkinson 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(4):m258-m260
The title compound, aquachloro{2,2′‐[1,2‐ethanediylbis(nitrilomethylidyne)]diphenolato‐κ4O,N,N′,O′}manganese(III),[MnCl(C16H14N2O2)(H2O)], is a neutral manganese(III) complex with a pseudo‐octahedral metal centre. The equatorial plane comprises the four donor atoms of the tetradentate Schiff base ligand [Mn—O 1.886 (4) and 1.893 (4) Å, and Mn—N 1.978 (5) and 1.982 (5) Å], with a water molecule [Mn—O 2.383 (4) Å] and a Cl? ligand [Mn—Cl 2.4680 (16) Å] completing the coordination sphere. The distorted geometry is highlighted by the marked displacement of the MnIII ion out of the least‐squares plane of the four Schiff base donor atoms by 0.165 (2) Å. These monomeric MnIII centres are then linked into a polymeric array via hydrogen bonds between the coordinated water molecule and the phenolic O‐atom donors of an adjacent MnIII centre [O—H?O 2.789 (5) and 2.881 (5) Å]. 相似文献
19.
Two tetranuclear manganese complexes, [NaMnIIMn3III(μ4‐O2–)(HL)3(SCN)4] ( 1 ) and [NaMnIIMn3III(μ4‐O2–)(HL)3Cl4][NaMnIIMn3III(μ4‐O2–)(HL)3Cl3(H2O)]ClO4 · 3.5H2O ( 2 ) were obtained from the reaction of manganese perchlorate with a quadridentate Schiff base ligand, 3‐(2‐hydroxybenzylideneamino)propane‐1, 2‐diol (H3L) derived from condensation of 2‐hydroxybenzaldehyde with 3‐amino‐1, 2‐propanediol, as well as the coligand KSCN or NaCl under basic conditions. Single‐crystal X‐ray studies reveal that those two complexes all have a mixed‐valent tetrahedral core, which contains an apical MnII ion and three basal MnIII ions situated in the [Mn3(μ4‐O2–)]7+ equilateral triangle plane. Fitting of the magnetic susceptibility data to the theoretical χmT vs. T expression, revealed that the presence of only antiferromagnetic interactions between the central metal atoms in 1 , while both antiferromagnetic and ferromagnetic interactions are present in 2 . 相似文献
20.
Two types of manganese complexes with [Mn4] cores featuring the unusual distorted cube topology are presented, the first of which comprises new modifications of the reported complex [MnIII4(sao)4(saoH)4]·3CHCl3: [Mn4(sao)4(saoH)4]·1.32(C4H10O)·0.43(CH4O) ( 1a ) and [Mn(sao)4(saoH)4]·0.5(CH4O)·0.5(C2H3N) ( 1b ) sao = salicylaldoxime. The second, 0.55[Mn4Cl4(C12H9N2O)4(CH3OH)2(H2O)2]·0.45[Mn4Cl4(C12H9N2O)4(CH3OH)4] ( 2 ), is the first reported case of a {MnII4} core of this topology besides known {MnIII4} compounds. Differences between the {MnII4} and {MnIII4} situation are discussed, and so far overlooked differences in magnetic properties between different {MnIII4} compounds are pointed out. 相似文献