共查询到20条相似文献,搜索用时 15 毫秒
1.
Mamiko Odoko Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(4):m136-m139
In the title compounds, [PtCl2(C3H10N2)], (I), [PdCl2(C3H10N2)], (II), and [Pt2Cl4(C10H26N4)], (III), each metal atom lies in a distorted cis‐square coordination geometry. Compounds (I) and (II) are isostructural, and each complex has a mirror plane through the metal atom and the middle C atom of the propane‐1,3‐diamine ligand. In (III), the binuclear complex [Pt2Cl4(spn)] has an inversion center at the middle of the 4,9‐diazadodecane‐1,12‐diamine (spermine, spn) ligand. The six‐membered chelate rings in (III) adopt a chair form, which is unsymmetrical and less flattened than those in (I) and (II). In all three crystal structures, there are intermolecular N—H⋯Cl hydrogen bonds. 相似文献
2.
Andreas Lemmerer David G. Billing Sandra A. Reisinger 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):m97-m100
The three isostructural compounds butylammonium hexachloridotin(IV), pentylammonium hexachloridotin(IV) and hexylammonium hexachloridotin(IV), (CnH2n+1NH3)2[SnCl6], with n = 4, 5 and 6, respectively, crystallize as inorganic–organic hybrids. As such, the structures consist of layers of [SnCl6]2− octahedra, separated by hydrocarbon layers of interdigitated butylammonium, pentylammonium or hexylammonium cations. Corrugated layers of cations alternate with tin(IV) chloride layers. The asymmetric unit in each compound consists of an anionic component comprising one Sn and two Cl atoms on a mirror plane, and two Cl atoms in general positions; the two cations lie on another mirror plane. Application of the mirror symmetry generates octahedral coordination around the Sn atom. All compounds exhibit bifurcated and simple hydrogen‐bonding interactions between the ammonium groups and the Cl atoms, with little variation in the hydrogen‐bonding geometries. 相似文献
3.
Xin‐Qiang Wang Wen‐Tao Yu Dong Xu Yan‐Ling Wang Ting‐Bin Li Wen‐Feng Guo 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(10):o583-o585
The title compound, C13H6O4S5, possesses crystallographically imposed mirror symmetry, with the atoms of the C=S group lying on the mirror plane. It is an example of the general formula [RCO]2(dmit), where R is a furan ring and dmit is 2‐thioxo‐1,3‐dithiole‐4,5‐dithiolate. The components exhibit some polarization of their molecular–electronic structure. The dmit and furan moieties exhibit a high degree of conjugation, as the introduction of C=O connecting the conjugated furan (donor) and dmit (acceptor) rings forms a good conjugated system with high delocalization. A polar three‐dimensional framework is built from a combination of intermolecular contacts, namely S⋯S interactions and C—H⋯O hydrogen bonding. The structural characteristics lead to good second‐order non‐linear optical properties. 相似文献
4.
Michel Fleck Ladislav Bohatý 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m412-m416
In catena‐poly[[[diaquanickel(II)]‐di‐μ‐glycine] dibromide], {[Ni(C2H5NO2)2(H2O)2]Br2}n, (I), the Ni atom is located on an inversion centre. In catena‐poly[[[tetraaquamagnesium(II)]‐μ‐glycine] dichloride], {[Mg(C2H5NO2)(H2O)4]Cl2}n, (II), the Mg atom and the non‐H atoms of the glycine molecule are located on a mirror plane. All other atoms are located on general positions. The atomic arrangements of both compounds are characterized by [MO6] octahedra (M = Ni or Mg) connected by glycine molecules, with the halogenide ions in the interstices. In (I), four of the coordinating O atoms are from glycine and two are from water molecules, building layers of octahedra and organic molecules. In (II), two of the coordinating O atoms are from glycine and four are from water molecules. The octahedra and organic molecules form chains. 相似文献
5.
David G. Billing A. Lemmerer 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m264-m266
The title compound, {(C4H12N)2[PbI3]I·2H2O}n, crystallizes as an organic–inorganic hybrid. The six‐coordinate Pb atom lies on a centre of inversion and all the I atoms lie on mirror planes; the two independent cations both lie across mirror planes. The structure contains anionic chains along [100] of fused [PbI3]− units forming face‐sharing octahedra. Four cations enclose channels occupied by isolated iodide ions and water molecules of hydration. 相似文献
6.
Na Liu Ai‐Ling Cheng En‐Qing Gao 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):o93-o95
In 3,4‐di‐2‐pyridyl‐1,2,5‐oxadiazole (dpo), C12H8N4O, each molecule resides on a twofold axis and interacts with eight neighbours via four C—H⋯N and four C—H⋯O interactions to generate a three‐dimensional hydrogen‐bonded architecture. In the perchlorate analogue, 2‐[3‐(2‐pyridyl)‐1,2,5‐oxadiazol‐4‐yl]pyridinium perchlorate, C12H9N4O+·ClO4− or [Hdpo]ClO4, the [Hdpo]+ cation is bisected by a crystallographic mirror plane, and the additional H atom in the cation is shared by the two pyridyl N atoms to form a symmetrical intramolecular N⋯H⋯N hydrogen bond. The cations and perchlorate anions are linked through C—H⋯O hydrogen bonds and π–π stacking interactions to form one‐dimensional tubes along the b‐axis direction. 相似文献
7.
Andreas Lemmerer David G. Billing 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m597-m601
The compounds catena‐poly[p‐phenylenediammonium [[diiodolead(II)]‐di‐μ‐iodo] dihydrate], {(C6H10N2)[PbI4]·2H2O}n, (I), and catena‐poly[bis(3,5‐dimethylanilinium) [[diiodolead(II)]‐di‐μ‐iodo]], {(C8H12N)2[PbI4]}n, (II), crystallize as organic–inorganic hybrids. As such, the structures consist of chains of [PbI2]− units extending along the c axis in (I) and along the b axis in (II). The asymmetric unit in (I) contains one Pb atom on a site of 2/m symmetry, two I atoms and a water molecule on mirror planes, and a p‐phenylenediammonium molecule that sits around a site of 2/m symmetry with the C and N atoms on a mirror plane. In (II), the Pb atom is on a twofold axis and the two I atoms are on general positions. Each Pb atom is octahedrally coordinated to six I atoms, arranged as chains of edge‐sharing octahedra. Both compounds undergo hydrogen‐bonding interactions between the ammonium groups and the I atoms. In addition, there are hydrogen bonds between the water molecules and the ammonium groups and halides in (I), and between the ammonium groups and the ring systems in (II). 相似文献
8.
Muharrem Diner Namk
zdemir Süleyman Gülcemal Bekir etinkaya Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m252-m254
The title complex, [RhBr(C8H12)(C24H19F5N2)], has a distorted pseudo‐square‐planar geometry. The Rh—C bond distance between the N‐heterocyclic ligand and the metal atom is 2.022 (3) Å. The angle between the carbene heterocycle and the coordination plane is 75.60 (11)°. It is shown that the average Rh—C(cyclooctadiene) distance is linearly dependent on the Rh—C(imidazole) distance in this type of compound. The crystal structure contains one intramolecular and two intermolecular types of C—H⋯F interactions, as well as one type of π–π stacking interaction. 相似文献
9.
Zoya A. Solodovnikova Sergey F. Solodovnikov 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):i53-i56
The crystal structures of dirubidium heptaoxodimolybdate, Rb2Mo2O7, and dicaesium heptaoxodimolybdate, Cs2Mo2O7, in the space groups Ama2 and P21/c, respectively, have been determined for the first time by single‐crystal X‐ray diffraction. The structures represent two novel structure types of monovalent ion dimolybdates, A2Mo2O7 (A = alkaline elements, NH4, Ag or Tl). In the structure of Rb2Mo2O7, Mo atoms are on a twofold axis, on a mirror plane and in a general position. One of the Rb atoms lies on a twofold axis, while three others are on mirror planes. Two O atoms attached to the Mo atom on a mirror plane are located on the same plane. Rubidium dimolybdate contains a new kind of infinite Mo–O chain formed from linked MoO4 tetrahedra and MoO6 octahedra alternating along the a axis, with two terminal MoO4 tetrahedra sharing corners with each octahedron. The chains stack in the [001] direction to form channels of an approximately square section filled by ten‐coordinate Rb ions. Seven‐ and eight‐coordinate Rb atoms are located between chains connected by a c translation. In the structure of Cs2Mo2O7, all atoms are in general positions. The MoO6 octahedra share opposite corners to form separate infinite chains running along the c axis and strengthened by bridging MoO4 tetrahedra. The same Mo–O polyhedral chain occurs in the structure of Na2Mo2O7. Eight‐ to eleven‐coordinate Cs atoms fill the space between the chains. The atomic arrangement of caesium dimolybdate has an orthorhombic pseudosymmetry that suggests a possible phase transition P21/c→Pbca at elevated temperatures. 相似文献
10.
Susan A. Bourne Katherine De Villiers Timothy J. Egan 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):o53-o57
The structures of three compounds with potential antimalarial activity are reported. In N,N‐diethyl‐N′‐(7‐iodoquinolin‐4‐yl)ethane‐1,2‐diamine, C15H20IN3, (I), the molecules are linked into ribbons by N—H⋯N and C—H⋯N hydrogen bonds. In N‐(7‐bromoquinolin‐4‐yl)‐N′,N′‐diethylethane‐1,2‐diamine dihydrate, C15H20BrN3·2H2O, (II), two aminoquinoline molecules and four water molecules form an R54(13) hydrogen‐bonded ring which links to its neighbours to form a T5(2) one‐dimensional infinite tape with pendant hydrogen bonds to the aminoquinolines. The phosphate salt 7‐chloro‐4‐[2‐(diethylammonio)ethylamino]quinolinium bis(dihydrogenphosphate) phosphoric acid, C15H22ClN32+·2H2PO4−·H3PO4, (III), was prepared in order to establish the protonation sites of these compounds. The phosphate ions form a two‐dimensional hydrogen‐bonded sheet, while the aminoquinoline cations are linked to the phosphates by N—H⋯O hydrogen bonds from each of their three N atoms. While the conformation of the quinoline region hardly varies between (I), (II) and (III), the amino side chain is much more flexible and adopts a significantly different conformation in each case. Aromatic π–π stacking interactions are the only supramolecular interactions seen in all three structures. 相似文献
11.
Dmitry Chernyshov Marc Hostettler Hans‐Beat Bürgi Karl W. Trnroos 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(10):m450-m452
The octahedral cis and trans isomers of dichlorobis(2‐picolylamine)iron(II), [FeCl2(C6H8N2)2], co‐crystallize in a 1:1 ratio. The cis isomer lies on a twofold axis, whereas the trans isomer lies on an inversion centre. The structure is fully ordered, with both Fe atoms in a pure high‐spin state. The Fe, Cl and N(H2) atoms of both isomers lie in the same plane, allowing all Cl and amine H atoms to be engaged in extensive two‐dimensional hydrogen bonding. The hydrogen‐bonded layers are interconnected through π–π interactions between the pyridine rings. Searches in the Cambridge Structural Database uncover very few examples of such isomer co‐existence. 相似文献
12.
Daron E. Janzen Paul C. Ewbank Kent R. Mann 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):o631-o633
In the crystal structure of the title compound, C8H18N22+·2I−·CH3CN, the dication lies on a mirror plane containing the molecular dication threefold axis. The structure displays C—H⋯I interactions between H atoms of the 1,4‐dimethyl‐1,4‐diazoniabicyclo[2.2.2]octane dication and the iodide anions. The H⋯I distances are in the range 2.96–3.18 (4) Å. The dications pack forming channels along the b axis, which contain the iodide anions and acetonitrile solvent molecules. 相似文献
13.
Simon J. Garden Marilza B. Corrêa Angelo C. Pinto James L. Wardell John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):o234-o238
In ethyl N‐[2‐(hydroxyacetyl)phenyl]carbamate, C11H13NO4, all of the non‐H atoms lie on a mirror plane in the space group Pnma; the molecules are linked into simple chains by a single C—H⋯O hydrogen bond. The molecules of ethyl N‐[2‐(hydroxyacetyl)‐4‐iodophenyl]carbamate, C11H12INO4, are linked into sheets by a combination of O—H⋯I and C—H⋯O hydrogen bonds and a dipolar I⋯O contact. Ethyl N‐[2‐(hydroxyacetyl)‐4‐methylphenyl]carbamate, C12H15NO4, crystallizes with Z′ = 2 in the space group P; pairs of molecules are weakly linked by an O—H⋯O hydrogen bond and these aggregates are linked into chains by two independent aromatic π–π stacking interactions. 相似文献
14.
Thierry Loiseau Gerard Ferey 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(3):i30-i32
Crystals of the title oxyfluorinated gallium arsenate, viz. tris(arsenato)fluorohydroxotrigallium propane‐1,3‐diyldiammonium monohydrate, were synthesized hydrothermally at 453 K under autogenous pressure, using 1,3‐diaminopropane as the structure‐directing agent. The solid crystallizes in the orthorhombic system and its structure was determined from single‐crystal X‐ray diffraction analysis. The structure is similar to that of gallium or aluminium phosphates with the ULM‐3 structural type and is built up from a three‐dimensional anionic framework composed of corner‐linked hexameric Ga3(AsO4)3(OH)F units. The Ga atoms have an octahedral [GaO4(OH)F] or trigonal‐bipyramidal [GaO4(OH) and GaO4F] coordination. These units are connected to one another and to the tetrahedral AsO4 groups via OH or F bridges. The three‐dimensional framework contains ten‐ring channels along [010], crosslinked by eight‐ring channels along [110] and [10]. The diprotonated organic species and water molecules reside within the ten‐ring channels. The cation is linked to the framework via an N—H⋯F hydrogen bond. A strong N—H⋯O hydrogen bond links the cation and the water molecule. 相似文献
15.
Julien Lesage Anne Guesdon Bernard Raveau 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(5):i44-i46
Rubidium trigallium bis(triphosphate), RbGa3(P3O10)2 has been synthesized by solid‐state reaction and studied by single‐crystal X‐ray diffraction at room temperature. This compound is the first anhydrous gallium phosphate containing both GaO4 tetrahedra (Ga1) and GaO6 octahedra (Ga2 and Ga3). The three independent Ga atoms are located on sites with imposed symmetry 2 (Wickoff positions 4a for Ga1 and 4b for Ga2 and Ga3). The GaO4 and GaO6 polyhedra are connected through the apices to triphosphate groups and form a three‐dimensionnal host lattice. This framework presents intersecting tunnels running along the [001] and <110> directions, where the Rb2+ cations are located on sites with imposed symmetry 2 (Wickoff position 4a). The structure also exhibits remarkable features, such as infinite helical columns created by the junction of GaO4 and PO4 tetrahedra. 相似文献
16.
Roman V. Shpanchenko Enrique E. Kaul Christoph Geibel Evgeny V. Antipov 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):i88-i90
The structure of dilead vanadium oxide bis(phosphate) contains corrugated layers formed by VO5 square pyramids oriented in opposite directions in a chessboard fashion. The pyramids are connected by tetrahedral PO4 groups. The layers are separated by the Pb atoms and isolated PO4 tetrahedra. 相似文献
17.
Gnana Sutha Siluvai Babu Varghese Narasimha N. Murthy 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):o380-o382
In the title salt, 1,3‐bis{[2‐(2‐pyridinio)ethyl][2‐(2‐pyridyl)ethyl]amino}benzene diperchlorate dihydrate, C34H38N62+·2ClO4−·2H2O, the cation contains two ethylpyridyl and two ethylpyridinium pendant pairs anchored to the two N atoms of 1,3‐phenylenediamine. The pyridyl and pyridinium N atoms are flanked by a molecule of water through strong hydrogen‐bonding interactions [N—H⋯O = 2.762 (6) and 2.758 (6) Å, and O—H⋯N = 2.834 (6) and 2.839 (6) Å]. The water molecules have weak hydrogen‐bonding interactions with the perchlorate anions as well. One of the perchlorate anions is severely disordered. 相似文献
18.
Ning‐Hai Hu Heng‐Qing Jia Jing‐Wei Xu Katsuyuki Aoki 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):m538-m541
The structure of poly[3‐[(4‐amino‐2‐methylpyrimidin‐1‐ium‐5‐yl)methyl]‐5‐(2‐hydroxyethyl)‐4‐methylthiazolium octa‐μ‐bromo/chloro(4.4/3.6)‐tricadmate(II)], {(C12H18N4OS)[Cd3 Br4.41Cl3.59]}n consists of hydrogen‐bonded thiamine molecules and polymeric cadmium bromide/chloride anions in an organic–inorganic hybrid fashion. The one‐dimensional anion ribbons are formed by edge‐sharing octahedra and vertex‐sharing tetrahedra. Thiamine molecules adopting the S conformation are linked to anions via three types of interactions, namely an N(amino)—H⋯anion⋯thiazolium bridging interaction, an N(pyrimidine)—H⋯anion hydrogen bond and an O(hydroxy)—H⋯anion hydrogen bond. 相似文献
19.
S. Kannan S. Shanmuga Sundara Raj Hoong‐Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):e545-e546
In the title complex, [UO2(dbm)2(PhSOPh)] or [UO2(C15H11O2)(C12H10OS)], where dbm is 1,3‐diphenylpropane‐1,3‐dionate, the U atom is surrounded by seven O atoms to give a distorted pentagonal bipyramidal geometry. The U—Ouranyl and U—Odbm distances (dbm is 1,3‐diphenylpropane‐1,3‐dionate) are in the ranges 1.760 (6)–1.776 (5) and 2.308 (4)–2.417 (4) Å, respectively, while the U—Osulfoxide distance is 2.427 (4) Å. 相似文献
20.
Canan Kazak Veysel T. Yilmaz Suleyman Servi Murat Koca Frank W. Heinemann 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):o348-o350
The title compounds, 1,3‐dibenzoylimidazolidine‐2‐thione, C17H14N2O2S, (I), and 1,3‐dibenzoyl‐3,4,5,6‐tetrahydropyrimidine‐2(1H)‐thione, C18H16N2O2S, (II), were obtained from the reactions of imidazolidine‐2‐thione and 1,4,5,6‐tetrahydropyrimidine‐2‐thiol, respectively, with benzoyl chloride. Compounds (I) and (II) contain, respectively, imidazolidinethione [C=S = 1.6509 (14) Å] and pyrimidinethione [C=S = 1.6918 (19) Å] moieties bonded to two benzoyl rings. The molecules of (I) exhibit C2 symmetry, the C=S bond lying along the twofold rotation axis, while the molecules of (II) have mirror symmetry (Cs). The imidazolidine ring in (I) is essentially planar, while the pyrimidine ring in (II) adopts a boat conformation. Molecules of (I) are linked by weak intermolecular C—H⋯O interactions, while molecules of (II) are held together by van der Waals interactions. 相似文献