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1.
(2,9‐Dimethyl‐1,10‐phenanthroline‐κ2N,N′)(pyridine‐2,6‐dicarboxylato‐κ3O2,N,O6)copper(II) trihydrate
Ibrahim Uar Ahmet Bulut Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):m479-m481
The copper(II) centre in the mononuclear title complex, [Cu(C7H3NO4)(C14H12N2)]·3H2O, is surrounded by one bidentate 2,9‐dimethyl‐1,10‐phenanthroline (dmphen) ligand and one tridentate pyridine‐2,6‐dicarboxylate ligand, and exhibits a distorted square‐pyramidal geometry. The crystal packing involves both hydrogen‐bonding and π–π interactions. The solvent water molecules link monomers to one another through hydrogen‐bonding interactions, forming ladder‐like chains in the bc plane. Face‐to‐face and slipped π–π interactions also occur between dmphen rings of neighboring molecules and are responsible for interchain packing. 相似文献
2.
Bernard Marciniak 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):o252-o254
The asymmetric unit of the title compound, C10H8O2, contains two planar symmetry‐independent molecules linked by an O—H⋯O hydrogen bond. In the crystal structure, molecules are linked into infinite chains of rings, formed by a combination of O—H⋯O and C—H⋯O hydrogen bonds, and additionally reinforced by π–π stacking interactions. Adjacent chains are connected by weak C—H⋯π interactions. 相似文献
3.
Viktor A. Tafeenko Rene Peschar Yakov S. Kajukov Kirill N. Kornilov Leonid A. Aslanov 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):o366-o368
Each anion of the title salt, NH4+·C8HN4O2−·H2O, is linked by two N—H⋯O hydrogen bonds to another anion, thus forming an essentially planar centrosymmetric dimer. The dimers are considered to be molecular building blocks of an anionic wall. The building blocks form infinite ribbons via–C—N⋯N—C– dipole–dipole and π–π interactions. Adjacent ribbons are stacked by means of π–π interactions, thus forming an anionic wall. Neighbouring walls are connected by (NH4+…H2O)n chains running along the b axis. 相似文献
4.
Mustafa Serkan Soylu Nezihe alkan Alaaddin ukurovali Ibrahim Ylmaz Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):o725-o727
The title compound, C24H26BrN3OS, crystallizes in the triclinic space group P, with two independent molecules in the asymmetric unit. The molecules adopt an E geometry about the azomethine C=N double bond. The structure is stabilized as dimers by N—H⋯N hydrogen bonding. C—H⋯π and π–π interactions are also effective in the crystal packing. 相似文献
5.
brahim Uar Ahmet Bulut Canan Kazak 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m428-m431
The asymmetric unit of the title compound, {[Pb(C4O4)(C12H8N2)2(H2O)]·2H2O}n, contains one squarate dianion, two phenanthroline (phen) ligands and one aqua ligand all coordinated to Pb, and two solvent water molecules. The eight‐coordinate Pb metal ion displays a distorted bicapped trigonal–prismatic coordination environment, defined by three squarate O atoms, four N atoms from two chelating phen ligands and one O atom from the coordinated water molecule. The crystal structure contains chains of squarate‐1,2,3‐bridged PbII ions running in the [010] direction. These polymeric chains are linked to one another via offset face‐to‐face π–π interactions between the phen ligands, which lead to a two‐dimensional network extending along the (001) plane. The crystal structure is also stabilized by O—H⋯O intermolecular hydrogen‐bond interactions, forming a three‐dimensional network. 相似文献
6.
A. N. C. Ltter M. A. Fernandes W. A. L. van Otterlo C. B. de Koning 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):o157-o159
The title compound, C15H11Cl2NO, was synthesized from N‐benzylisatin. The compound crystallizes as stacks of molecules running down the c axis. Molecules within each of these stacks interact with each other through π–π and C—H⋯π interactions, and interact with neighbouring stacks through C—H⋯O interactions. 相似文献
7.
Ming‐Tian Li Cheng‐Gang Wang Xu‐Cheng Fu 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m434-m436
In the title compound, [Cd(C2H8N2)2(H2O)2](C10H8NO3S)2·2H2O, the CdII atom, located on an inversion centre, has a distorted octahedral coordination geometry formed by two ethylenediamine and two water molecules. 4‐Aminonaphthalene‐1‐sulfonate acts as a counter‐ion to balance the charge, and two antiparallel anions showing strong π–π stacking interactions are linked by paired N—H⋯O(sulfonate) hydrogen bonds into an isolated R22(16) dimer. The crystal structure is stabilized by the π–π stacking interactions and hydrogen bonds. 相似文献
8.
Marcilio S. S Cunha‐Filho Mariana Landin Ramon Martinez‐Pacheco Bruno Dacunha‐Marinho 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):o473-o475
The most remarkable aspect of the crystal structure of the title compound (systematic name: 3,4‐dihydro‐2,2‐dimethyl‐2H‐naphtho[1,2‐b]pyran‐5,6‐dione), C15H14O3, is that a π‐stacking interaction is present between the two naphthalene ring systems of symmetry‐related molecules. Apart from these π–π interactions, different molecules are held together by weak C—H⋯O hydrogen‐bonding interactions. 相似文献
9.
Li‐Qin Xiong Chuan‐Min Qi 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(1):m10-m12
The title compound, [La2(C8H3NO6)2(C8H4NO6)2(H2O)6]·2H2O, consists of dimeric units related by an inversion center. The two LaIII atoms are linked by two bridging bidentate carboxylate groups and two monodentate carboxylate groups. Each LaIII atom is nine‐coordinated by six O atoms from five different carboxylate groups and three from water molecules. Hydrogen bonds between the water molecules and between the solvent water and a carboxylate O atom are observed in the structure. In the crystal packing, there are slipped π–π stacking interactions between the parallel benzene rings. Both hydrogen‐bonding and π–π interactions combine to stabilize the three‐dimensional supramolecular network. 相似文献
10.
Muharrem Diner Namk
zdemir Ahmet etin Tekin Keser Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o639-o642
In the title compound, C22H25N5OS·2H2O, the molecules are stacked in columns running along the b axis. In this arrangemant, the molecules are linked to each other by a combination of one two‐centre N—H⋯O hydrogen bond and four two‐centre O—H⋯O hydrogen bonds containing two types of ring motif, viz.R44(10) and R33(11). In the crystal structure, centrosymmetric π–π interactions between the triazole rings, with a distance of 3.691 (2) Å between the ring centroids, also affect the packing of the molecules. 相似文献
11.
Xiang Zhou Xiao‐Bing Wang Ling‐Yi Kong 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):o58-o61
In the title compound, C23H26N2O4·H2O, the benzopyran ring system is planar. The piperazine ring adopts an almost perfect chair conformation, and the methoxy group is coplanar with its parent benzene ring. Hydrogen bonds link two water molecules and two piperazine molecules into tetrameric units. The adjacent benzopyran moieties within these units also interact viaπ–π stacking interactions, and a sheet is formed by the propagation of these interactions. The bioassay results have shown α1‐adrenoceptor antagonistic activity through in vitro animal experiments. 相似文献
12.
13.
D. N. Adhikesavalu Donald Mastropaolo Arthur Camerman Norman Camerman 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):657-659
The title compounds, C28H31N2O3+·Cl?·H2O (common name rhodamine‐6g), (I), and C21H17N2O3+·Cl?·3H2O (common name rhodamine‐123), (II), both have planar xanthene skeletons with a formal +1 charge on the amino N atoms delocalized through the π‐electron system so that the N—Csp2 bond distances indicate significant double‐bond character. The substituted planar phenyl groups make angles of 63.29 (8) and 87.96 (11)° with the xanthene planes in (I) and (II), respectively. In both molecules, the carbonyl bond vectors point toward the xanthene rings. The ethylamine groups in (I) are oriented similarly with their CH2–CH3 bond vectors pointing nearly perpendicular to the xanthene plane. The chloride ions and water molecules are disordered in both structures. In (I), the chloride ion and water molecule are disordered between two sites. One water and chloride alternately occupy the same site with occupancy factors of 0.5. The other 0.5‐chloride and 0.5‐water occupy two distinct positions separated by 0.747 (8) Å. In (II), the chloride ion is disordered between three sites and one of the waters is disordered about two other sites. Both crystal structures are stabilized by hydrogen bonds involving the chloride ions, amino groups and water molecules, as well as by π–π stacking between xanthene planes. 相似文献
14.
Onur ahin Orhan Büyükgüngr Selami amaz Nurhan Gümrüküolu Cihan Kantar 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o643-o646
The title compounds, C10H12N4, (I), and C9H10N4, (II), have been synthesized and characterized both spectroscopically and structurally. The dihedral angles between the triazole and benzene ring planes are 26.59 (9) and 42.34 (2)°, respectively. In (I), molecules are linked principally by N—H⋯N hydrogen bonds involving the amino NH2 group and a triazole N atom, forming R44(20) and R24(10) rings which link to give a three‐dimensional network of molecules. The hydrogen bonding is supported by two different C—H⋯π interactions from the tolyl ring to either a triazole ring or a tolyl ring in neighboring molecules. In (II), intermolecular hydrogen bonds and C—H⋯π interactions produce R34(15) and R44(21) rings. 相似文献
15.
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
16.
Zun‐Ting Zhang Yan‐Chang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(1):o51-o53
In the lattice of the title compound (systematic name: 5,6,7‐trihydroxy‐4′‐methoxyisoflavone monohydrate), C16H12O6·H2O, the isoflavone molecules are linked into chains through R43(17) motifs composed via O—H⋯O and C—H⋯O hydrogen bonds. Centrosymmetric R42(14) motifs assemble the chains into sheets. Hydrogen‐bonding and aromatic π–π stacking interactions lead to the formation of a three‐dimensional network structure. 相似文献
17.
Mustafa Odabaolu idem Albayrak Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(4):o240-o242
Molecules of the title compound, C8H9NO2, are linked into sheets by a combination of C—H·N, O—H·N and O—H·O hydrogen bonds and C—H·π interactions. The hydrogen bonds are arranged as described by the graph‐set ring notations R22(7) and R33(5), and a C8 chain motif. There are two planar symmetry‐independent molecules in the asymmetric unit, with a dihedral angle of 19.24 (5)° between their least‐squares mean planes. 相似文献
18.
Anna M. Trzeciak Iweta Pryjomska‐Ray Andrzej Gniewek Jzef J. Zikowski Tadeusz Lis 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m491-m494
The title compound, [Pd2(C12H10O3P)2Cl2(C12H11O3P)2], consists of a dinuclear μ‐chloro‐bridged palladium unit with two diphenoxyphosphinite groups per Pd atom, linked together by a hydrogen bond. The asymmetric unit contains one half of the molecule, with the other half generated by an inversion centre. The geometry around the P atoms may be described as distorted tetrahedral. Adjacent molecules of the complex are linked by weak C—H⋯O and C—H⋯Cl hydrogen bonds. The structure is additionally stabilized by π–π stacking interactions between the aryl rings. These interactions form a herring‐bone pattern in the crystal structure. 相似文献
19.
Sevim Hamamci Veysel T. Yilmaz Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m1-m3
Crystallization of the title compound, di‐μ‐pyridazine‐1κ2N:2κ2N′‐bis[(2,3‐dihydro‐3‐oxobenzisosulfonazolato‐κN)silver(I)], [Ag2(C7H4NO3S)2(C4H4N2)2], from acetonitrile yields both monoclinic, (I), and triclinic, (II), polymorphs. In both forms, the silver(I) ions have a slightly distorted trigonal AgN3 coordination geometry and are doubly bridged by two neutral pyridazine (pydz) ligands, generating a centrosymmetric dimeric structure. The saccharinate (sac) ligands are N‐coordinated. The dihedral angles between the sac and pydz rings are 8.43 (7) and 7.94 (8)° in (I) and (II), respectively, suggesting that the dimeric molecule is nearly flat. The bond geometry is similar in both polymorphs. In (I), the dimers interact with each other via aromatic πsac–πpydz stacking interactions, forming two‐dimensional layers, which are further crosslinked by weak C—H⋯O interactions. Compound (II) exhibits similar C—H⋯O and π–π interactions, but additional C—H⋯π and π⋯Ag interactions help to stabilize the packing of the dimers. 相似文献
20.
Xu‐Cheng Fu Ming‐Tian Li Xiao‐Yan Wang Cheng‐Gang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m13-m15
In the crystal structure of the title complex, [Zn(C3H2O4)(C12H8N2)(H2O)2], the ZnII atom displays a distorted octahedral geometry, being coordinated by two N atoms from the 1,10‐phenanthroline ligand, two O atoms from different carboxylate groups of the chelating malonate dianion and two O atoms of cis water molecules. The complex molecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding interactions between coordinated water molecules and the uncoordinated carboxylate O atoms of neighboring molecules, and aromatic π–π stacking interactions between neighboring phenanthroline rings. 相似文献