共查询到20条相似文献,搜索用时 15 毫秒
1.
Jan Janczak Ynara Marina Idemori 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(1):m23-m25
Crystals of a new antimony(III) phthalocyanine complex with the formula [Sb(C32H16N8)]4(Sb4I16), or (SbPc)·[Sb4I16]4?, where Pc is phthalocyaninate, have been obtained by the reaction of pure powdered antimony with phthalonitrile under a stream of iodine vapour. The crystals are built up from separate but interacting (SbPc)+ cations and centrosymmetric [Sb4I16]4? anions. Each Sb atom of two independent (SbPc)+ units is bonded to the four isoindole N atoms of the phthalocyaninate(2?) macrocycle and lies 1.0 Å out of the plane defined by four isoindole N atoms. The anionic part of the complex consists of four SbI6 distorted octahedra joined together into a centrosymmetric [Sb4I16]4? anion. The arrangement of oppositely charged moieties in the crystal is mainly determined by ionic attraction and by a set of distinct donor–acceptor interactions between (SbPc)+ and [Sb4I16]4? ions. 相似文献
2.
Ibrahim Abdul Razak S. Shanmuga Sundara Raj Hoong‐Kun Fun Ye‐Xiang Tong Zhong‐Lin Lu Bei‐Sheng Kang 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):291-292
In the crystal structure of the title compound, [Zn(C4H13N3)2]2[Fe(CN)6]·4H2O, the asymmetric unit is formed by a [Zn(dien)2]2+ cation (dien = diethylenetriamine, NH2CH2CH2NHCH2CH2NH2), water molecules and half of the [Fe(CN)6]4? anion which is related by inversion symmetry through the Fe atom. The geometry around the Zn and Fe atoms is distorted octahedral and octahedral, respectively. Intramolecular O—H?O hydrogen bonds involving the water molecules, and intermolecular O—H?N hydrogen bonds involving the water molecules and the anions, result in an infinite chain. Intramolecular O—H?O and N—H?N, and intermolecular O—H?N, N—H?O and N—H?N hydrogen bonds form a three‐dimensional framework. 相似文献
3.
Khaled R. A. Abdellatif Morshed A. Chowdhury Edward E. Knaus 《Journal of heterocyclic chemistry》2008,45(6):1707-1710
A regiospecific cyclization‐dehydration reaction of a 1‐[(4‐(N‐alkyl‐N‐(tert‐butyloxycarbony)amino)‐phenyl]‐4,4,4‐trifluorobutane‐1,3‐done with a 4‐aminosulfonyl‐, or 4‐methylsulfonyl‐, phenylhydrazine hydrochloride in refluxing ethanol proceeded with simultaneous loss of the N‐tert‐butyloxycarbonyl protecting group to afford a group of 1‐(4‐methanesulfonylphenyl or 4‐aminosulfonylphenyl)‐5‐[4‐(N‐alkylaminophenyl)]‐3‐(trifluoromethyl)‐11H‐pyrazoles(6). Subsequent reaction of the pyrazole 6 (R1 = R2 = Me) with nitric oxide (40 psi) proceeded via a N‐methylamino‐N‐diazen‐1‐ium‐1,2‐diolate intermediate that undergoes protonation of the more basic diazen‐1‐ium‐1,2‐diolate N2‐nitrogen and then loss of a nitroxyl (HNO) species to furnish the N‐nitroso product 7. 相似文献
4.
Michael Schur Wolfgang Bensch 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):1107-1108
The title double salt, [Ni(C2H8N2)3]2(SbS4)(NO3), was crystallized under solvothermal conditions. Hydrogen bonds between the SbS43? anions (at four sites) and the [Ni(en)3]2+ (en = ethylenediamine) cations (at two sites) form a three‐dimensional network. The NO3? anion is disordered over four sites. The cation lies on a twofold rotation axis and the SbS43? anion on a axis. 相似文献
5.
Yurii S. Moroz El
bieta Gumienna‐Kontecka Igor O. Fritsky Nikolay M. Dudarenko Jolanta
witek‐Kozowska 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m498-m500
The title compound, (C2H10N2)2[Ni(C2HN2O4)2]·2H2O, has an ionic structure containing a centrosymmetric complex 4− anion, charge‐balancing ethylenediaminium dications and solvent water molecules. The oxalohydroxamate unit is triply deprotonated and forms five‐membered chelate rings with the central Ni ion; the Ni ion lies on an inversion centre. The two hydroxamate O atoms in the complex anion are linked by short intramolecular hydrogen bonds. 相似文献
6.
Yang Peng Yi‐Zhi Li Song‐Song Bao Li‐Min Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m302-m304
In the title compound, [Co(C2H8N2)3]2[Ru2(C2H4O7P2)2Cl2]Cl·3H2O, the building unit contains two crystallographically independent dinuclear [Ru2(hedp)2Cl2]5− anions, where hedp [viz. (1‐hydroxyethylidene)diphosphonate] serves as a bis‐chelating bridging ligand, two types of [Co(en)3]3+ cations, one uncoordinated Cl− anion and five water molecules of crystallization. The [Ru2(hedp)2Cl2]5− anions are connected to one another, forming one‐dimensional chains along the a axis. The [Co(en)3]3+ cations are located between these chains and lie across inversion centres. An extensive series of hydrogen bonds lead to the formation of a three‐dimensional supramolecular network structure, with channels generated along the [100] direction. The uncoordinated water molecules and Cl− anions reside in these channels. 相似文献
7.
B. de Castro C. Freire M. Teresa Duarte M. F. Minas da Piedade I. C. Santos 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):370-372
In the title complex, trans‐{2,2′‐[cyclohexane‐1,2‐diylbis(nitrilomethylidyne)]diphenolato‐κ4O,N,N′,O′}nickel(II)–chloroform (1/1), [Ni(C20H20N2O2)]·CHCl3, the Ni atom has a square‐planar geometry, slightly tetrahedrally distorted. The Ni—N and Ni—O bonding distances are within the expected ranges for Ni–Schiff base derivatives. The diimine bridge has a gauche conformation with the cyclohexyl ring almost coplanar with the NiN2O2 plane. The complex molecules pack in dimers with an Ni?Ni distance of 3.59 (1) Å and form a three‐dimensional structure displaying a herring‐bone configuration. Channels are occupied by solvent molecules, which are involved in C—H?O hydrogen bonds with the ligand O atoms. 相似文献
8.
Ken Sakai Yuichi Uchida Takashi Kajiwara Tasuku Ito 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m65-m68
In the title compound, [RuII(C10H8N2)3]2[FeIII(CN)6]Cl·8H2O, the [Ru(bpy)3]2+ (bpy is 2,2′‐bipyridine) cations and water molecules afford intriguing microporous honeycomb layers, while the [Fe(CN)6]3− anions and the remainder of the water molecules form anionic sheets based on extensive hydrogen‐bonding networks. The cationic and anionic layers alternate along the c axis. The Fe atom in [Fe(CN)6]3− lies on an inversion centre and the axial cyano ligands are hydrogen bonded to the water molecules encapsulated within the micropores [N⋯O = 2.788 (5) Å], giving an unusual interpenetration between the cationic and anionic layers. On the other hand, the in‐plane cyano ligands are relatively weakly hydrogen bonded to the water molecules [N⋯O = 2.855 (7) and 2.881 (8) Å] within the anionic sheets. 相似文献
9.
Matthew J. Hallam Colin A. Kilner Malcolm A. Halcrow 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(8):m445-m446
The title compound, [Cu2(C8H6N3)2(C2H3N)2](ClO4)2, contains a centrosymmetric dinuclear dication, with square‐pyramidal CuII centres linked by two 1,2‐pyrazolide bridging groups. There is a weak apical interaction between each Cu ion and a perchlorate O atom. 相似文献
10.
Ayhan Elmali Yalcn Elerman Ingrid Svoboda 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):375-376
The crystal structure of the title compound, {bis[2‐(2‐oxido‐2‐naphthylideneamino)phenyl] disulfide‐κ5O,N,S,N′,O′}chloroiron(III), [FeCl(C34H22N2O2S2)], has been determined. The structure consists of monomeric iron(III) complexes with distorted octahedral coordination. The disulfide functions as a pentadentate ligand and the FeIII atom is coordinated through two N, two O and one S atom, and one chloride ion. The distance between the second S atom and the FeIII atom is a non‐bonding 3.8473 (14) Å. 相似文献
11.
Pierre Thury Martine Nierlich Bernardo Masci 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(1):o14-o15
The title compound, 2,2′‐(3‐oxapentane‐1,5‐diyldioxy)diphenol, crystallizes as a methanol solvate, C16H18O5·CH4O. The methanol molecule, roughly perpendicular to the mean plane of the polyether molecule, is hydrogen bonded to the two polyether OH groups and to the central ether O atom. Possible C—H?π intermolecular interactions are present. 相似文献
12.
C. R. Ross II M. R. Bauer R. M. Nielson S. C. Abrahams 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(1):m24-m26
The crystal structure of bis[aminoguanidinium(1+)] hexafluorozirconate(IV), (CH7N4)2[ZrF6], originally reported by Bukvetskii, Gerasimenko & Davidovich [Koord. Khim. (1990), 16 , 1479–1484], has been redetermined independently using two different samples. Normal probability analysis confirms the reliability of all refined parameter standard uncertainties in the new determinations, whereas systematic error detectable in the earlier work leads to a maximum difference of 0.069 (6) Å in atomic positions between the previously reported and present values of an F‐atom y coordinate. Radiation‐induced structural damage in aminoguanidinium polyfluorozirconates may result from minor displacements of H atoms in weak N—H⋯F bonds to new potential minima and subsequent anionic realignment. 相似文献
13.
Malcolm A. Halcrow Colin A. Kilner Mark Thornton‐Pett 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):711-713
The title compound, [Cu(C27H40BN6)2]·2CH2Cl2, contains a four‐coordinate CuII ion lying on a crystallographic inversion centre, giving rise to a near‐regular square‐planar stereochemistry. There is an axial contact of 2.71 Å between the Cu ion and ligand B—H group, although this is unlikely to correspond to a significant `agostic' interaction. 相似文献
14.
Leopoldo Suescun Alvaro W. Mombrú Raúl A. Mariezcurrena Helena Pardo Silvia Russi Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(2):179-181
The crystal structure of the title compound, [NiCl(C12H8N2)2(CH4N2S)]2(NO3)Cl·2C2H6O, is formed by [Ni(phen)2(thiourea)Cl]+ cations (phen = 1,10‐phenanthroline), chloride and nitrate counter‐ions, and ethanol solvate molecules. The Ni atom is octahedrally coordinated to two bidentate phen ligands, a monodentate thiourea and a chloride ion. Both the chloride and nitrate anions, which provide charge balance, are located at special positions on a twofold symmetry axis. Hydrogen bonds play a key role in the packing and conformation of the cation and create a three‐dimensional network. 相似文献
15.
P. Perez‐Lourido J. A. García‐Vzquez J. Romero P. Fernandez A. Sousa‐Pedrares A. Sousa 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):e101-e102
The title compound, [2‐Ph2P(O)C6H4S]2 or C36H28O2P2S2, obtained by electrochemical oxidation of 2‐(diphenylphosphino)benzenethiol, has twofold crystallographic symmetry. Principal dimensions include S—S 2.0212 (15) Å, S—C 1.786 (3) Å and C—S—S—C 81.34 (14)°. 相似文献
16.
Ana Tesouro Vallina Helen Stoeckli‐Evans 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):489-490
The title compound, C24H18N4O, is a bis‐bidentate Schiff base ligand exhibiting pseudo‐C2 symmetry. The molecule is twisted about the central ether linkage and exhibits an imine E configuration. In the crystal, the molecules are linked by weak intermolecular C—H?N hydrogen bonds. 相似文献
17.
Roger D. Willett Salim F. Haddad 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e438-e438
In the title compound, 4‐(dimethylamino)pyridine is protonated on the pyridine N atom. The N(CH3)2 moiety is twisted 4.4 (2)° from the pyridine‐ring plane. The octahedral [SnCl6]2? anion is hydrogen bonded via trans‐Cl atoms to pyridinium N atoms from two cations forming (C7H11N2)2[SnCl6] structural units. 相似文献
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20.
Sr5(VO4)3(CuO) was prepared via solid state reactions from mixed powders of the metal oxides or carbonates in corundum crucibles in air (1173–1740 K). The compound is transparent and stable in air. The color changes with the preparation temperature from light gray (1173 K) to gray (1740 K). The crystal structure (space group P63/m, No. 176; Z = 2; a = 10.126 Å, c = 7.415 Å) is a derivative of the apatite Ca5(PO4)3OH, and is characterized by isolated [VO4]3– anions (d(V–O) = 1.710 Å) and infinite linear 1∞[CuO]1– chains (d(Cu–O) = 1.854 Å) inserted in the channels parallel to the hexagonal axis. The compound prepared at 1740 K contains vacancies at the copper and oxygen positions of the linear chains (about 10% and 5%, respectively). 相似文献