scholarly journals Crystal structure of 7,8,15,16,17-pentathiadispiro[5.2.59.36]heptadecane

2019 ◽  
Vol 75 (6) ◽  
pp. 888-891 ◽  
Author(s):  
Robert Hofstetter ◽  
Benedict J. Elvers ◽  
Felix Potlitz ◽  
Andreas Link ◽  
Carola Schulzke
Keyword(s):  
Crystal Structure ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Asymmetric Unit ◽  
Related Molecule ◽  
One Dimensional ◽  
Compound C ◽  
The One ◽  
Parallel Fashion ◽  
Cyclohexyl Group

The title compound, C12H20S5, crystallizes in the monoclinic space group P21/c with four molecules in the unit cell. In the crystal, the asymmetric unit comprises the entire molecule with the three cyclic moieties arranged in a line. The molecules in the unit cell pack in a parallel fashion, with their longitudinal axes arranged along a uniform direction. The packing is stabilized by the one-dimensional propagation of non-classical hydrogen-bonding contacts between the central sulfur atom of the S3 fragment and the C—H of a cyclohexyl group from a glide-related molecule [C...S = 3.787 (2) Å].

scholarly journals Synthesis and crystal structure of 1,3-di-tert-butyl-2-chloro-4,4-diphenyl-1,3,2λ3,4-diazaphosphasiletidine

2019 ◽  
Vol 75 (3) ◽  
pp. 405-409 ◽  
Author(s):  
Dennis Mo ◽  
Walter Frank
Keyword(s):  
Crystal Structure ◽  
Membered Ring ◽  
Mean Deviation ◽  
Monoclinic Space Group ◽  
Asymmetric Unit ◽  
Reduced Pressure ◽  
Synthesis And Crystal Structure ◽  
Compound C ◽  
Crude Product ◽  
Phenyl Rings

The chemical reaction of dilithiumN,N′-di(tbutyl)-Si,Si-diphenylsilanediamide and PCl3yielded an off-white solid. Sublimation of the crude product under reduced pressure at elevated temperature gave colourless prismatic crystals of the title compound, C20H28ClN2PSi, which crystallizes in the non-centrosymmetric monoclinic space groupCc.The asymmetric unit of the crystal structure contains one molecule and it is dominated by the central SiN2P four-membered ring, which is almost planar with a mean deviation of the atoms from the best plane of 0.014 Å. The angles between the plane defined by the silicon atom and the two nitrogen atoms and the best planes of theSi-phenyl groups are 85.1 (2) and 77.4 (2)°, with the tilt of the phenyl rings in the opposite direction. Bothtert-butyl groups suffer from a two-position rotational disorder with site occupancies of 0.752 (6)/0.248 (6) and 0.878 (9)/0.122 (9). The P—Cl bond [2.2078 (17) Å] is remarkably elongated compared to the P—Cl distance in PCl3[2.034 Å; Galy & Enjalbert (1982).J. Solid State Chem.44, 1–23].

scholarly journals Synthesis and crystal structure of Na4Ni7(AsO4)6

2016 ◽  
Vol 72 (5) ◽  
pp. 632-634 ◽  
Author(s):  
Rénald David
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Site Symmetry ◽  
Asymmetric Unit ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Ceramic Synthesis ◽  
The One

The title compound, tetrasodium heptanickel hexaarsenate, was obtained by ceramic synthesis and crystallizes in the monoclinic space groupC2/m. The asymmetric unit contains seven Ni atoms of which two have site symmetry 2/mand three site symmetry 2, four As atoms of which two have site symmetrymand two site symmetry 2, three Na atoms of which two have site symmetry 2, and fifteen O atoms of which four have site symmetrym. The structure of Na4Ni7(AsO4)6is made of layers of Ni octahedra and As tetrahedra assembled in sheets parallel to thebcplane. These layers are interconnected by corner-sharing between NiO6octahedra and AsO4tetrahedra. This linkage creates tunnels running along thecaxis in which the Na atoms are located. This arrangement is similar to the one observed in Na4Ni7(PO4)6, but the layers of the two compounds are slightly different because of the disorder of one of the Ni sites in the structure of the title compound.

scholarly journals Crystal structure of 1,13,14-triazadibenz[a,j]anthracene 1,1,2,2-tetrachloroethane monosolvate

2015 ◽  
Vol 71 (6) ◽  
pp. 681-683
Author(s):  
Take-aki Koizumi ◽  
Tomohiro Hariu ◽  
Yoshihisa Sei
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Pyridine Ring ◽  
Rotation Axis ◽  
Columnar Structure ◽  
Steric Repulsion ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Compound C ◽  
Benzene Rings

The asymmetric unit of the title compound, C19H11N3·C2H2Cl4, consists of one half-molecule of 1,13,14-triazadibenz[a,j]anthracene (dibenzo[c,h]-1.9,10-anthyridine, dbanth) and one half of 1,1,2,2-tetrachloroethane (TCE), both of which are located on a crystallographic twofold rotation axis. The dihedral angle between the planes of the terminal benzene rings in dbanth is 3.59 (7)° owing to the steric repulsion between the H atoms in the two benzo groups and the H atom in the central pyridine ring of the anthridine skeleton. In the crystal, π–π interactions between pyridine rings [centroid–centroid distances = 3.568 (2) and 3.594 (2) Å] link the dbanth molecules to form a one-dimensional columnar structure along thecaxis. The dbanth and TCE molecules are connected through weak bifurcated C—H...(N,N) hydrogen bonds.

2′,7′-Di-4-pyridylspiro[cyclopropane-1,9′-fluorene] hemihydrate

2006 ◽  
Vol 62 (7) ◽  
pp. o3013-o3014 ◽  
Author(s):  
Zi-Xing Wang ◽  
Hai-Yao Lin ◽  
Ping Lu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Water Molecule ◽  
Title Compound ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Solvent Water Molecule ◽  
One Dimensional ◽  
Solvent Water ◽  
Compound C

The asymmetric unit of the crystal structure of the title compound, C25H18N2·0.5H2O, contains two independent dipyridylspiro(cyclopropanefluorene) (CPF) molecules and one solvent water molecule. The two CPF molecules show significantly different dihedral angles between the pyridine rings and fluorene plane. The water molecule links with the CPF molecules via O—H...N hydrogen bonding to form a one-dimensional supramolecular chain.

scholarly journals 5-Amino-1-(2′,3′-O-isopropylidene-D-ribityl)-1H-imidazole-4-carboxamide: a crystal structure withZ′ = 4

2017 ◽  
Vol 73 (2) ◽  
pp. 183-187 ◽  
Author(s):  
Vincenzo Piccialli ◽  
Nicola Borbone ◽  
Giorgia Oliviero ◽  
Gennaro Piccialli ◽  
Stefano D'Errico ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Intermolecular Hydrogen Bonding ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules ◽  
Intramolecular Hydrogen ◽  
Similar Conformation

The title compound, C12H20N4O5, crystallizes in the monoclinic space groupP21, with four crystallographically independent molecules in the asymmetric unit. The four molecules have a very similar conformation that is basically determined by the formation of two intramolecular hydrogen bonds between the amino NH2donors and the carbonyl and ring O-atom acceptors, forming, respectively,R(6) andR(7) ring motifs.. In the crystal, intermolecular hydrogen bonding leads to the formation ofR22(10) ring patterns, involving one amide CONH2donor and an imidazole N-atom acceptor. The cluster of the four independent molecules has approximate non-crystallographicC2point symmetry. The structural analysis also shows that during the synthesis of the title compound, the reductive cleavage of the D-ribose ring of the inosine precursor proceeds stereoselectively, with retention of configuration.

Zur Kristallchemie von Supersäuren: Bildung und Struktur der tiefschmelzenden Addukte SbF5 · CF3SO3H und SbF5 · 7 HF [1] / Crystal Chemistry of Superacids: Formation and Structure of the Low-Melting Adducts SbF5 · CF3SO3H and SbF5 · 7 HF [1]

1991 ◽  
Vol 46 (12) ◽  
pp. 1659-1663 ◽  
Author(s):  
Dietrich Mootz ◽  
Klemens Bartmann
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Crystal Chemistry ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
The Novel ◽  
Melting Diagram ◽  
Complex Molecules ◽  
One Dimensional

The melting diagram of the superacid system SbF5—CF3SO3H as well as of SbF5—HF has been studied by DTA and the crystal structure of one newly found low-melting adduct in each case determined. The adduct SbF5 · CF3SO3H (m.p. — 1°C, monoclinic, space group P21/c, Z = 4 formula units per unit cell) is composed of complex molecules F5SbOS(CF3)(O)OH which are linked by strong hydrogen bonds O-H ···F to infinite chains. The adduct SbF5 · 7HF (melting incongruently at —75°C, monoclinic, I 2/m, Z = 2) is a fluoronium salt, (H7F6)SbF6. The novel H7F6+ cation is formed as an unbranched chain by very strong hydrogen bonds between the respective F atoms, which become weaker from the center to the ends. A further hydrogen bond of this kind, between the cations and the octahedral SbF6- anions, again leads to a one-dimensional polymer.

One-Dimensional Chained Polymer Constructed by 3-Indolepropionic Acid and 2,2'-Bipyridinium

2013 ◽  
Vol 454 ◽  
pp. 276-279
Author(s):  
Li Hua Wang ◽  
Zhi Xiang Ji
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Network Structure ◽  
Ethanol Solution ◽  
Monoclinic Space Group ◽  
Single Crystal Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
3D Network ◽  
The One

The crystals of one-dimensional chained polymer constructed by 3-indolepropionic acid and 2,2-bipyridinium have been synthesized by evaporation from ethanol solution. The crystal structure of one-dimensional chained polymer was determined by X-ray single crystal diffraction analysis. The results shows that the polymer belongs to monoclinic, space group P2(1)/c, a = 5.2557(11) Å, b = 12.249(2) Å, c = 21.467(4) Å, V = 1380.1(5) Å3, Z = 2, Mr = 531.58, De = 1.279 g/cm3, T = 293(2) K, F (000) = 558, R = 0.1136 and wR = 0.3376. The compound forms one-dimensional chained polymer through hydrogen bonds. 3D network structure was constructed by the interaction of the one-dimensional chained polymer.

scholarly journals Crystal structure of the one-dimensional metal–organic polymercatena-poly[[tris(μ-2,4,6-trimethylbenzoato-κ2O:O′)dizinc]-μ-2,4,6-trimethylbenzoato-κ2O:O′]

2015 ◽  
Vol 71 (1) ◽  
pp. m14-m15
Author(s):  
Masaki Yamamura ◽  
Tatsuya Nabeshima
Keyword(s):  
Crystal Structure ◽  
Title Complex ◽  
Asymmetric Unit ◽  
Tetrahedral Geometry ◽  
Polymeric Structure ◽  
One Dimensional ◽  
Bond Lengths ◽  
Metal Organic ◽  
The One

The title complex, [Zn2(C10H11O2)4]n, has a one-dimensional polymeric structure. The asymmetric unit consists of two zinc atoms bridged by three 2,4,6-trimethylbenzoate anions and one bidentate bridging 2,4,6-trimethylbenzoate anion. The [Zn2(C9H11CO2)3] cluster units are intermolecularly linked to form a one-dimensional polymer, which propagates in the direction of the crystallographicbaxis. The Zn atoms adopt a tetrahedral geometry. The Zn—O bond lengths in the intramolecular bridges are slightly shorter than those in the intermolecular bridges.

scholarly journals Crystal structure of a one-dimensional coordination polymer of tin(IV) bromide with 1,4-dithiane

2015 ◽  
Vol 71 (12) ◽  
pp. m267-m268 ◽  
Author(s):  
Hans Reuter ◽  
Natalia Röwekamp-Krugley ◽  
Marius Imwalle ◽  
Simona Keil ◽  
Martin Reichelt
Keyword(s):  
Crystal Structure ◽  
Chair Conformation ◽  
Mean Value ◽  
Formula Unit ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Distorted Octahedral ◽  
Polymeric Chains ◽  
The One ◽  
Typical Range

The title compound, [SnBr4(C4H8S2)] {systematic name:catena-poly[[tetrabromidotin(IV)]-μ-1,4-dithiane-κ2S:S′]}, represents the first 1,4-dithiane complex with tin as coordination centre. The asymmetric unit consist of half a formula unit with the tin(IV) atom at the centre of symmetry at 0,0,1/2 (Wyckoff symbolb) and a centrosymmetric 1,4-dithiane molecule with the centre of symmetry in 1/2,0,1 (Wyckoff symbolc). The tin(IV) atom is coordinated in a distorted octahedral manner by the four bromine atoms and two sulfur atoms of two 1,4-dithiane molecules in atrans-position. Sn—Br [mean value: 2.561 (5) Å] and Sn—S distances [2.6546 (6) Å] are in the typical range for octahedrally coordinated tin(IV) atoms and the dithiane molecule adopts a chair conformation. The one-dimensional polymeric chains propagate along the [101] direction with weak intermolecular Br...Br [3.5724 (4) Å] between parallel chains and weak Br...H interactions [2.944–2.993 Å] within the chains.

scholarly journals Crystal structure of the one-dimensional coordination polymer formed by the macrocyclic [Ni(cyclam)]2+ cation and the dianion of diphenylsilanediylbis(4-benzoic acid)

2020 ◽  
Vol 76 (6) ◽  
pp. 929-932
Author(s):  
Sergey P. Gavrish ◽  
Sergiu Shova ◽  
Maria Cazacu ◽  
Yaroslaw D. Lampeka
Keyword(s):  
Crystal Structure ◽  
Macrocyclic Ligand ◽  
Three Dimensional ◽  
Polymeric Chain ◽  
Water Molecules ◽  
Supramolecular Network ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Polymeric Chains ◽  
The One

The asymmetric unit of the title compound, catena-poly[[[(1,4,8,11-tetraazacyclotetradecane-κ4 N 1,N 4,N 8,N 11)nickel(II)]-μ-4,4′-(diphenylsilanediyl)dibenzoato-κ2 O:O′] sesquihydrate], {[Ni(C26H18O4Si)(C10H24N4)]·1.5H2O} n , consists of the halves of the centrosymmetric macrocyclic cation and the C 2-symmetric dicarboxylate dianion and of the water molecule of crystallization. The Ni2+ ion is coordinated by the four secondary N atoms of the macrocyclic ligand characterized by the most energetically favourable trans-III conformation and two mutually trans O atoms of the carboxylate, forming a slightly tetragonally elongated trans-N4O2 octahedron. The crystals are composed of parallel polymeric chains of the macrocyclic cations linked by the anions of the acid running along the [101] direction. Each polymeric chain is bonded to four neighbouring ones via water molecules providing O—H...O hydrogen bonds to the non-coordinated carboxyl O atoms to form a three-dimensional supramolecular network.

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