共查询到20条相似文献,搜索用时 15 毫秒
1.
Uwe Kolitsch 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(3):m129-m133
Rubidium chromium(III) dioxalate dihydrate [diaquabis(μ‐oxalato)chromium(III)rubidium(I)], [RbCr(C2O4)2(H2O)2], (I), and dicaesium magnesium dioxalate tetrahydrate [tetraaquabis(μ‐oxalato)magnesium(II)dicaesium(I)], [Cs2Mg(C2O4)2(H2O)4], (II), have layered structures which are new among double‐metal oxalates. In (I), the Rb and Cr atoms lie on sites with imposed 2/m symmetry and the unique water molecule lies on a mirror plane; in (II), the Mg atom lies on a twofold axis. The two non‐equivalent Cr and Mg atoms both show octahedral coordination, with a mean Cr—O distance of 1.966 Å and a mean Mg—O distance of 2.066 Å. Dirubidium copper(II) dioxalate dihydrate [diaquabis(μ‐oxalato)copper(II)dirubidium(I)], [Rb2Cu(C2O4)2(H2O)2], (III), is also layered and is isotypic with the previously described K2‐ and (NH4)2CuII(C2O4)2·2H2O compounds. The two non‐equivalent Cu atoms lie on inversion centres and are both (4+2)‐coordinated. Hydrogen bonds are medium‐strong to weak in the three compounds. The oxalate groups are slightly non‐planar only in the Cs–Mg compound, (II), and are more distinctly non‐planar in the K–Cu compound, (III). 相似文献
2.
Elguja B. Miminoshvili Alexandre N. Sobolev Tamara N. Sakvarelidze Ketevan E. Miminoshvili Elguja R. Kutelia 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):m118-m120
In order to model processes of chemisorption in organic salts formed between dinitrobenzoic acids (DNBH) and secondary amines (R2NH), a series of compounds of composition [MII(3,5‐DNB)2(DMSO)2(H2O)2] (where MII is Zn, Cu, Ni or Co, 3,5‐DNB is the 3,5‐dinitrobenzoate ion, and DMSO is dimethyl sulfoxide) have been prepared. In diaquabis(dimethyl sulfoxide)bis(3,5‐DNB)zinc(II), [Zn(C7H3N2O6)2(C2H6OS)2(H2O)2], the 3,5‐DNB ions and molecules of DMSO are monodentate ligands that are coordinated to the Zn atom through their O atoms. These ligands, together with two molecules of water, form a slightly distorted octahedral coordination environment for the Zn atom, which lies on a center of symmetry. 相似文献
3.
A. Gueddi B. Mernari M. Giorgi M. Pierrot 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e426-e428
The reaction of the diazine ligand 3,5‐bis(2‐pyridinyl)‐1,3,4‐oxadiazole (pod, C12H8N4O), with Cu(CF3SO3)2 or Ni(ClO4)2 afforded the title complexes diaquabis[3,5‐bis(2‐pyridinyl)‐1,3,4‐oxadiazole‐N2,N3]copper(II) bis(trifluoromethanesulfonate), [Cu(pod)2(H2O)2](CF3SO3)2, and diaquabis[3,5‐bis(2‐pyridinyl)‐1,3,4‐oxadiazole‐N2,N3]nickel(II) diperchlorate, [Ni(pod)2(H2O)2](ClO4)2. Both complexes present a crystallographically centrosymmetric mononuclear cation structure which consists of a six‐coordinated CuII or NiII ion with two pod molecules acting as bidentate ligands and two axially coordinated water molecules. 相似文献
4.
Juraj ernk Khalil A. Abboud 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(3):m167-m170
Partial reduction of the CuII ions in the aqueous system CuII–en–[Ni(CN)4]2? (1/1/1) (en is 1,2‐diaminoethane) yields a novel heterobimetallic mixed‐valence compound, poly[[aquabis(1,2‐diaminoethane)copper(II)] [hexa‐μ‐cyano‐tetracyanobis(1,2‐diaminoethane)tricopper(I,II)dinickel(II)] dihydrate], [Cu(C2H8N2)2(H2O)][Ni2Cu3(CN)10(C2H8N2)2]·2H2O or [Cu(en)2(H2O)][Cu(en)2Ni2Cu2(CN)10]·2H2O. The structure is formed by a negatively charged two‐dimensional array of the cyano complex [Cu(en)2Ni2Cu2(CN)10]n2n?, [Cu(en)2(H2O)]2+ complex cations and water molecules of crystallization. These last are involved in a complicated hydrogen‐bonding system. The cyano groups act as terminal, μ2‐bridging or μ3‐bridging ligands. 相似文献
5.
Andrew Bond William Jones 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):436-437
The title compound, [Mg(C5H4NOS)2(H2O)2]·C10H8N2O2S2, is a two‐component host–guest material. The 2,2′‐dithiobis(pyridine N‐oxide) molecule has crystallographic twofold symmetry. The metal complex lies on an inversion centre and associates via C—H?S interactions into chains which thread the 2,2′‐dithiobis(pyridine N‐oxide) lattice in perpendicular directions. Hydrogen bonds exist between the water molecules of the diaquamagnesium units and the N—O groups of the host lattice. 相似文献
6.
Masood Parvez Kristin Braitenbach 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):919-920
The structure of dichloro[1‐(p‐chlorobenzyl)‐2‐(1‐pyrrolidinylmethyl‐N)‐1,3‐benzimidazole‐N3]cobalt(II), [CoCl2(C19H20ClN3)], contains a molecule of clemizole bound in a bidentate manner to cobalt through its imidazole and pyrrolidinyl N atoms, with significantly different Co—N distances of 1.976 (5) and 2.126 (5) Å, respectively. The geometry around cobalt is distorted tetrahedral, with significantly different Co—Cl distances of 2.217 (2) and 2.233 (2) Å, and the pyrrolidinyl ring is disordered. 相似文献
7.
Lan Yang Changwen Hu Haruo Naruke Toshihiro Yamase 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(7):799-801
The title compound, poly[[[diaqua(μ‐4,4′‐bipyridyl)dinickel(II)]‐bis(μ‐4,4′‐bipyridyl)‐di‐μ‐hexaoxodivanadate(2?)] 2.5‐hydrate], [Ni2(V2O6)2(C10H8N2)3(H2O)2]·2.5H2O, has been prepared hydrothermally and characterized by elemental analyses, IR spectroscopy and single‐crystal X‐ray diffraction. The structure consists of [V2O6], [Ni(4,4′‐bipy)4O2] and [Ni(H2O)2(4,4′‐bipy)2O2] polyhedra, and water of crystallization. The Ni atoms and one bipyridyl group lie on centres of symmetry. 相似文献
8.
Yasunori Muranishi Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(12):m578-m580
trans‐Diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)cobalt(II) dihydrate, [Co(C10H6NO2)2(H2O)2]·2H2O, and trans‐diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)nickel(II) dihydrate, [Ni(C10H6NO2)2(H2O)2]·2H2O, contain the same isoquinoline ligand, with both metal atoms residing on a centre of symmetry and having the same distorted octahedral coordination. In the former complex, the Co—O(water) bond length in the axial direction is 2.167 (2) Å, which is longer than the Co—O(carboxylate) and Co—N bond lengths in the equatorial plane [2.055 (2) and 2.096 (2) Å, respectively]. In the latter complex, the corresponding bond lengths for Ni—O(water), Ni—O(carboxylate) and Ni—N are 2.127 (2), 2.036 (2) and 2.039 (3) Å, respectively. Both crystals are stabilized by similar stacking interactions of the ligand, and also by hydrogen bonds between the hydrate and coordinated water molecules. 相似文献
9.
Natalia V. Kuratieva Marina I. Naumova Dmitry Yu. Naumov 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):i129-i131
The title compounds, hexaaquacobalt(II) bis(hypophosphite), [Co(H2O)6](H2PO2)2, and hexaaquacobalt(II)/nickel(II) bis(hypophosphite), [Co0.5Ni0.5(H2O)6](H2PO2)2, are shown to adopt the same structure as hexaaquamagnesium(II) bis(hypophosphite). The packing of the Co(Ni) and P atoms is the same as in the structure of CaF2. The CoII(NiII) atoms have a pseudo‐face‐centred cubic cell, with a = b~ 10.3 Å, and the P atoms occupy the tetrahedral cavities. The central metal cation has a slightly distorted octahedral coordination sphere. The geometry of the hypophosphite anion in the structure is very close to ideal, with point symmetry mm2. Each O atom of the hypophosphite anion is hydrogen bonded to three water molecules from different cation complexes, and each H atom of the hypophosphite anion is surrounded by three water molecules from further different cation complexes. 相似文献
10.
Nobuo Okabe Yasunori Muranishi 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m228-m230
The title complexes, trans‐diaquabis(quinoline‐2‐carboxylato‐κ2N,O)cobalt(II)–water–methanol (1/2/2), [Co(C10H6NO2)2(H2O)2]·2CH4O·2H2O, and trans‐diaquabis(quinoline‐2‐carboxylato‐κ2N,O)nickel(II)–water–methanol (1/2/2), [Ni(C10H6NO2)2(H2O)2]·2CH4O·2H2O, are isomorphous and contain CoII and NiII ions at centers of inversion. Both complexes have the same distorted octahedral coordination geometry, and each metal ion is coordinated by two quinoline N atoms, two carboxylate O atoms and two water O atoms. The quinoline‐2‐carboxylate ligands lie in trans positions with respect to one another, forming the equatorial plane, with the two water ligands occupying the axial positions. The complex molecules are linked together by hydrogen bonding involving a series of ring patterns which include the uncoordinated water and methanol molecules. 相似文献
11.
Chong‐Hyeak Kim Sueg‐Geun Lee 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m421-m423
The title compound, [Ni(C3H10N2)2(H2O)2](C6H6NO3S)2, contains alternating layers of sulfanilate anions and diaquabis(1,3‐propanediamine)nickel(II) cations. The Ni atom lies on an inversion centre and is hexacoordinated by the 1,3‐propanediamine ligands, which function as N,N′‐bidentate ligands, and the water molecules, which are in a trans arrangement. The sulfanilate anions are arranged in layers, with the sulfonate and amine groups directed towards opposite sides of the layer. The structure is stabilized by a network of hydrogen bonding between the O and N atoms of the sulfanilate anions, the water molecules, and the N atoms of the 1,3‐propanediamine ligands. 相似文献
12.
Yong Nie Chun‐Hua Hu Xue Li Wei Yong Jian‐Min Dou Jie Sun Ruo‐Shui Jin Pei‐Ju Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):897-899
Each of the title compounds, 8‐methoxy‐7,7‐bis(triphenylphosphine‐P)‐8,9:10,11‐di‐μH‐7‐platina‐nido‐undecaborane dichloromethane hemisolvate, [Pt(CH14B10O)(C18H15P)2]·0.5CH2Cl2, (I), 8‐isopropoxy‐7,7‐bis(triphenylphosphine‐P)‐8,9:10,11‐di‐μH‐7‐platina‐nido‐undecaborane dichloromethane solvate, [Pt(C3H18B10O)(C18H15P)2]·CH2Cl2, (II), and 9‐isopropoxy‐7,7‐bis(triphenylphosphine‐P)‐8,9:10,11‐di‐μH‐7‐platina‐nido‐undecaborane dichloromethane solvate, [Pt(C3H18B10O)(C18H15P)2]·CH2Cl2, (III), has an 11‐vertex nido polyhedral skeleton, with the 7‐platinum centre ligating to two exo‐polyhedral PPh3 groups and an alkoxy‐substituted polyhedral borane ligand. Compounds (II) and (III) are isomers. The Pt—B distances are in the range 2.214 (7)–2.303 (7) Å for (I), 2.178 (16)–2.326 (16) Å for (II) and 2.205 (6)–2.327 (6) Å for (III). 相似文献
13.
Hiroyuki Ishida Setsuo Kashino 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):476-479
2,5‐Dichloro‐3,6‐dihydroxy‐1,4‐benzoquinone (chloranilic acid) forms X—H?Y (X, Y = N or O) and C—H?Cl hydrogen bonds with pyrazole and imidazole to afford bis(pyrazolium) dichloroanilate and bis(imidazolium) dichloroanilate, (I) and (II), both 2C3H5N2+·C6Cl2O42?, and imidazolium chloroanilate acetonitrile solvate, C3H5N2+·C6HCl2O4?·C2H3N, (III). Their crystal structures demonstrate three novel supramolecular architectures based on supramolecular synthons to build a ladder, (I), a two‐dimensional network, (II), and a flat ribbon, (III). 相似文献
14.
Juraj Kuchr Juraj ernk Werner Massa 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m418-m420
The title compound, bis[diaquabis(ethylenediamine‐κ2N,N′)copper(II)] hexacyanoiron(II) tetrahydrate, [Cu(C2H8N2)2(H2O)1.935]2[Fe(CN)6]·4H2O, was crystallized from an aqueous reaction mixture initially containing CuSO4, K3[Fe(CN)6] and ethylenediamine (en) in a 3:2:6 molar ratio. Its structure is ionic and is built up of two crystallographically different cations, viz. [Cu(en)2(H2O)2]2+ and [Cu(en)2(H2O)1.87]2+, there being a deficiency of aqua ligands in the latter, [Fe(CN)6]4− anions and disordered solvent water molecules. All the metal atoms lie on centres of inversion. The Cu atom is octahedrally coordinated by two chelate‐bonded en molecules [mean Cu—N = 2.016 (2) Å] in the equatorial plane, and by axial aqua ligands, showing very long distances due to the Jahn–Teller effect [mean Cu—O = 2.611 (2) Å]. In one of the cations, significant underoccupation of the O‐atom site is observed, correlated with the appearance of a non‐coordinated water molecule. This is interpreted as the partial contribution of a hydrate isomer. The [Fe(CN)6]4− anions form quite regular octahedra, with a mean Fe—C distance of 1.913 (2) Å. The dominant intermolecular interactions are cation–anion O—H⋯N hydrogen bonds and these interactions form layers parallel to (001). 相似文献
15.
Hai‐Ying Wang Shyh‐Jiun Liu Ru‐Ji Wang Chan‐Cheng Su 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m512-m515
The organic ligands 4‐methyl‐1H‐imidazole and 2‐ethyl‐4‐methyl‐1H‐imidazole react with Cu(CF3SO3)2·6H2O to give tetrakis(5‐methyl‐1H‐imidazole‐κN3)copper(II) bis(trifluoromethanesulfonate), [Cu(C4H6N2)4](CF3SO3)2, and aquatetrakis(2‐ethyl‐5‐methyl‐1H‐imidazole‐κN3)copper(II) bis(tri fluoromethanesulfonate), [Cu(C6H10N2)4(H2O)](CF3SO3)2. In the former, the Cu atom has an elongated octahedral coordination environment, with four imidazole rings in equatorial positions and two trifluoromethanesulfonate ions in axial positions. This conformation is similar to those in the analogous complexes tetrakis(imidazole)copper(II) trifluoromethanesulfonate and tetrakis(2‐methyl‐1H‐imidazole)copper(II) trifluoromethanesulfonate. In the second of the title compounds, the ethyl groups block the central Cu atom, and a square‐pyramidal coordination environment is formed around the Cu atom, with the substituted imidazole rings in the basal positions and a water molecule in the axial position. 相似文献
16.
Takashi Kajiwara Tasuku Ito 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):22-23
The title octahedral complexes, [bis(pyridine‐2‐carbonyl)aminate]dichloro(methanol)iron(III), [Fe(C12H8N3O2)Cl2‐(CH4O)], and [bis(pyridine‐2‐carbonyl)aminate]dichloro‐(ethanol)iron(III), [Fe(C12H8N3O2)Cl2(C2H6O)], both crystallize in space group and have similar structures. Monoanionic bpca? [bis(pyridine‐2‐carbonyl)aminate] acts as a planar tridentate ligand in both cases. Coordination bond distances are in the range typical of high‐spin FeIII complexes. Carbon–oxygen distances are typical of a C=O double bond suggesting the negative charge of the bpca? ligand is localized on the central N atom. 相似文献
17.
Judith Felcman R. Alan Howie Jussara Lopes De Miranda Janet M. S. Skakle James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(3):m103-m106
The structure of the title compound, aqua[μ‐(N1‐carboxylatomethylguanidino)oxidoacetato](μ‐guanidinoacetic acid)dicopper(II) nitrate dihydrate, [Cu2(C5H6N3O5)(C3H7N3O2)(H2O)]NO3·2H2O, contains two enantiomers of the dicopper(II) complex cation that comprise water, neutral zwitterionic guanidinoacetic acid and the trianion of (N1‐carboxymethylguanidino)hydroxyacetic acid as ligands. Extensive hydrogen bonding creates three‐dimensional connectivity but is largely confined to layers that each contain both cation enantiomers. These layers are related to one another by crystallographic symmetry and are therefore identical in composition and connectivity. 相似文献
18.
Dichloro(norbornadiene)platinum(II): a comparison with dichloro(cyclooctadiene)platinum(II)
Jeffrey L. Butikofer Eric W. Kalberer William C. Schuster Dean M. Roddick 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m353-m354
The crystal structure of the title compound, (bicyclo[2.2.1]hepta‐2,5‐diene)dichloroplatinum(II), [PtCl2(C7H8)], has been determined from single‐crystal X‐ray analysis. The coordination sphere about the Pt atom is pseudo‐square planar, with shorter Pt—C distances than in the corresponding dichloro(cyclooctadiene)platinum(II) complex. 相似文献
19.
Michel Fleck Ladislav Bohatý 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(6):m291-m295
The crystal structures of three compounds of glycine and inorganic materials are presented and discussed. The orthorhombic structure of glycinesulfatodilithium(I), [Li2(SO4)(C2H5NO2)]n, consists of corrugated sheets of [LiO4] and [SO4] tetrahedra. The glycine molecules are located between these sheets. The main features of the monoclinic structure of diaquadichloroglycinenickel(II), [NiCl2(C2H5NO2)(H2O)2]n, are helical chains of [NiO4Cl2] octahedra connected by glycine molecules. The orthorhombic structure of triaquaglycinesulfatozinc(II), [Zn(SO4)(C2H5NO2)(H2O)3]n, is made up of [O3SOZnO5] clusters. These clusters are linked by glycine molecules into zigzag chains. All three compounds are examples of non‐centrosymmetric glycine compounds. 相似文献
20.
Ritu Bala Raj Pal Sharma Upendra Sharma Valeria Ferretti 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m628-m631
In the title complex salt, tetrakis[hexaamminecobalt(III)] hexachlorocadmate(II) bis[aquatetrachlorothiocyanatocadmate(II)] dichloride dihydrate, the discrete ions, i.e. [Co(NH3)6]3+, Cl−, [CdCl6]4− (located on an inversion centre) and [CdCl4(SCN)(H2O)]3−, together with cocrystallized water molecules, are assembled by means of a network of hydrogen‐bonding interactions. This is the first X‐ray structure determination of a hexaamminecobalt(III) salt with two different complex chlorocadmium anions. 相似文献