scholarly journals La3Si6N11

2014 ◽  
Vol 70 (6) ◽  
pp. i23-i24 ◽  
Author(s):  
Hisanori Yamane ◽  
Toshiki Nagura ◽  
Tomohiro Miyazaki
Keyword(s):  
Single Crystals ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Unit Cell ◽  
The Other ◽  
Tetragonal Unit Cell ◽  
Dimensional Network

Colorless transparent single crystals of trilanthanum hexasilicon undecanitrogen, La3Si6N11, were prepared at 0.85 MPa of N2and 2273 K. The title compound is isotypic with Sm3Si6N11. Silicon-centered nitrogen tetrahedra form a three-dimensional network structure by sharing their corners. Layers of one type of SiN4tetrahedra and slabs composed of the two different La3+cations and the other type of SiN4tetrahedra are alternately stacked along thecaxis of the tetragonal unit cell. The site symmetries of the two La3+cations are are ..mand 4.., respectively.

scholarly journals Ca5Zr3F22

2012 ◽  
Vol 68 (4) ◽  
pp. i23-i23 ◽  
Author(s):  
Abdelghani Oudahmane ◽  
Malika El-Ghozzi ◽  
Daniel Avignant
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Solid State Reaction ◽  
Title Compound ◽  
Three Dimensional ◽  
The Other ◽  
Site Symmetry ◽  
Coordination Numbers ◽  
Rotation Axes ◽  
Dimensional Network

Single crystals of Ca5Zr3F22, pentacalcium trizirconium docosafluoride, were obtained unexpectedly by solid-state reaction between CaF2and ZrF4in the presence of AgF. The structure of the title compound is isotypic with that of Sr5Zr3F22and can be described as being composed of layers with composition [Zr3F20]8−made up from two different [ZrF8]4−square antiprisms (one with site symmetry 2) by corner-sharing. The layers extending parallel to the (001) plane are further linked by Ca2+cations, forming a three-dimensional network. Amongst the four crystallographically different Ca2+ions, three are located on twofold rotation axes. The Ca2+ions exhibit coordination numbers ranging from 8 to 12, depending on the cut off, with very distorted fluorine environments. Two of the Ca2+ions occupy interstices between the layers whereas the other two are located in void spaces of the [Zr3F20]8−layer and alternate with the two Zr atoms along [010]. The crystal under investigation was an inversion twin.

scholarly journals Crystal structure of 4,4′-diethynylbiphenyl

2015 ◽  
Vol 71 (7) ◽  
pp. 816-820
Author(s):  
Tei Tagg ◽  
C. John McAdam ◽  
Brian H. Robinson ◽  
Jim Simpson
Keyword(s):  
Crystal Structure ◽  
Network Structure ◽  
Title Compound ◽  
Triple Bond ◽  
Three Dimensional ◽  
Unit Cell ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings

The title compound, C16H10, crystallizes with four unique molecules, designated 1–4, in the asymmetric unit of the monoclinic unit cell. None of the molecules is planar, with the benzene rings of molecules 1–4 inclined to one another at angles of 42.41 (4), 24.07 (6), 42.59 (4) and 46.88 (4)°, respectively. In the crystal, weak C—H...π(ring) interactions, augmented by even weaker C[triple-bond]C—H...π(alkyne) contacts, generate a three-dimensional network structure with interlinked columns of molecules formed along thec-axis direction.

4-Bromo-N-(3,4-methylenedioxybenzyl)aniline

2007 ◽  
Vol 63 (11) ◽  
pp. o4404-o4404 ◽  
Author(s):  
Shu-Ping Yang ◽  
Li-Jun Han ◽  
Da-Qi Wang ◽  
Hai-Tao Xia
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Compound C ◽  
Dimensional Network

In the title compound, C14H12BrNO2, the molecules are linked by one C—H...Br hydrogen bond, so forming a C(13) chain running parallel to the [010] direction, and these chains are linked by further C—H...π and C—H...Br hydrogen bonds, resulting in a three-dimensional network structure.

scholarly journals Bis(nitrilotriacetamide-κ4 N,O,O′,O′′)silver(I) nitrate

IUCrData ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Min Ren ◽  
Ming Yue ◽  
Jingwen Ran
Keyword(s):  
Hydrogen Bonding ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network

In the centrosymmetric cation of the title compound, [Ag(C6H12N4O3)2]NO3, the AgI ion, lying on a threefold rotoinversion axis, is coordinated by two N atoms and six O atoms from two nitrilotriacetamide ligands, forming a distorted dodecahedral environment. In the crystal, cations and anions are linked through N—H...O hydrogen-bonding interactions, leading to a three-dimensional network structure.

scholarly journals Crystal structure of trihydrogen bis{[1,1,1-tris(2-oxidoethylaminomethyl)ethane]cobalt(III)} trinitrate

2015 ◽  
Vol 71 (12) ◽  
pp. m275-m276 ◽  
Author(s):  
Waqas Sethi ◽  
Heini V. Johannesen ◽  
Thorbjørn J. Morsing ◽  
Stergios Piligkos ◽  
Høgni Weihe
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Network Structure ◽  
Title Compound ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Rotation Axes ◽  
Dimensional Network ◽  
Nitrate Anions

The title compound, [Co2(L)2]3+·3NO3−[whereL= CH3C(CH2NHCH2CH2OH1/2)3], has been synthesized from the ligand 1,1,1-tris(2-hydroxyethylaminomethyl)ethane. The cobalt(III) dimer has an interesting and uncommon O—H...O hydrogen-bonding motif with the three bridging hydroxy H atoms each being equally disordered over two positions. In the dimeric trication, the octahedrally coordinated CoIIIatoms and the capping C atoms lie on a threefold rotation axis. The N atoms of two crystallographically independent nitrate anions also lie on threefold rotation axes. N—H...O hydrogen bonding between the complex cations and nitrate anions leads to the formation of a three-dimensional network structure. The compound is a racemic conglomerate of crystals containing either D or L molecules. The crystal used for this study is a D crystal.

scholarly journals Bis[tris(propane-1,3-diamine-κ2N,N′)nickel(II)] diaquabis(propane-1,3-diamine-κ2N,N′)nickel(II) hexabromide dihydrate

2014 ◽  
Vol 70 (6) ◽  
pp. m227-m228 ◽  
Author(s):  
Aymen Yangui ◽  
Walid Rekik ◽  
Slim Elleuch ◽  
Younes Abid
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
General Position ◽  
Three Dimensional ◽  
The Other ◽  
Octahedral Coordination ◽  
Water Molecules ◽  
Coordination Environment ◽  
Lattice Water ◽  
Dimensional Network

In the title compound, [Ni(C3H10N2)3]2[Ni(C3H10N2)2(H2O)2]Br6·2H2O, one Ni2+cation, located on an inversion centre, is coordinated by four N atoms from two ligands and by two water O atoms. The other Ni2+cation, located in a general position, is coordinated by six N atoms from three ligands. In both cases, the Ni2+cation has an octahedral coordination environment. The overall structural cohesion is ensured by three types of hydrogen bonds, N—H...Br, O—H...Br and O—H...O, which connect the two types of complex cations, the bromide counter-anions and the lattice water molecules into a three-dimensional network.

Poly[deca-μ2-cyanido-dicyanidobis(μ2-ethylenediamine)bis(ethylenediamine)tricadmium(II)dicobalt(III)]: a two-dimensional coordination polymer

2009 ◽  
Vol 65 (3) ◽  
pp. m118-m120
Author(s):  
Olha Sereda ◽  
Helen Stoeckli-Evans
Keyword(s):  
Coordination Polymer ◽  
Network Structure ◽  
General Position ◽  
Rotation Axis ◽  
Three Dimensional ◽  
The Other ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Dimensional Network

The title coordination polymer, [Cd3Co2(CN)12(C2H8N2)4]n, has an infinite two-dimensional network structure. The asymmetric unit is composed of two crystallographically independent CdIIatoms, one of which is located on a twofold rotation axis. There are two independent ethylenediamine (en) ligands, one of which bis-chelates to the Cd atom that sits in a general position, while the other bridges this Cd atom to that sitting on the twofold axis. The Cd atom located on the twofold rotation axis is linked to four equivalent CoIIIatomsviacyanide bridges, while the Cd atom that sits in a general position is connected to three equivalent CoIIIatomsviacyanide bridges. In this way, a series of trinuclear, tetranuclear and pentanuclear macrocycles are linked to form a two-dimensional network structure lying parallel to thebcplane. In the crystal structure, these two-dimensional networks are linkedviaN—H...N hydrogen bonds involving an en NH2H atom and a cyanide N atom, leading to the formation of a three-dimensional structure. This coordination polymer is only the second example involving a cyanometallate where the en ligand is present in both chelating and bridging coordination modes.

scholarly journals N-[2-(2-Hydroxyethoxy)phenethyl]phthalimide

2012 ◽  
Vol 68 (6) ◽  
pp. o1636-o1636
Author(s):  
Er-Qun Yang ◽  
Jun-Tao Zhang ◽  
Xiao-Ping Cao ◽  
Jin-Zhong Gu
Keyword(s):  
Hydrogen Bond ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Dimensional Network ◽  
Benzene Rings

The title compound, C18H17NO4, was obtained accidentally through acid-catalysed aromatization of a phthalimide-substituted 2-(1-hydroxyethyl)cyclohex-2-enone. It exhibits an intramolecular O—H...Oc (c = carbonyl) hydrogen bond and forms a three-dimensional network structure via π–π stacking interactions between adjacent benzene rings (phthalimide-to-phenylene and phthalimide-to-phthalimide), with centroid–centroid distances of 3.8262 (6) and 3.6245 (5) Å.

Isonipecotate chloride

2006 ◽  
Vol 62 (4) ◽  
pp. o1250-o1251 ◽  
Author(s):  
Zhi-Cheng Ma ◽  
Xin-Hua Li
Keyword(s):  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Compound C ◽  
Dimensional Network

The structure of the title compound, C6H12NO2 +·Cl−, consists of an isonipecotate cation and a Cl− anion linked by intermolecular O—H...Cl and N—H...Cl interactions into a three-dimensional network structure.

scholarly journals Kristallstruktur und Schwingungsspektren von Zn(NH3)4(ClO4)2 / Crystal Structure and Vibrational Spectra of Zn(NH3)4(ClO4)2

1994 ◽  
Vol 49 (9) ◽  
pp. 1163-1168 ◽  
Author(s):  
Harald Hillebrecht ◽  
Gerhard Thiele ◽  
Alrik Koppenhöfer ◽  
Heinrich Vahrenkamp
Keyword(s):  
Crystal Structure ◽  
Vibrational Spectra ◽  
Title Compound ◽  
Three Dimensional ◽  
The Other ◽  
Complex Ions ◽  
Zintl Phase ◽  
Dimensional Network ◽  
Tetrahedral Voids ◽  
Raman And Ir Spectra

The title compound Zn(NH3)4(ClO4)2 crystallizes in the space group F4̄3m with a = 10.240(1) Å. The crystal structure consists of tetrahedral Zn(NH3)4 cations and two nonequivalent ClO4 anions with crystallographic Td symmetry. The complex ions constitute an arrangement which is known from the Zintl phase MgAgAs. The Zn(NH3)4 cations are ccp packed with perchlorate anions in octahedral and tetrahedral voids. Whereas the ClO4 ions centered at tetrahedral holes do not interact with the other lattice components, the perchlorate ions in the octahedral voids are connected with the ammine ligands by a hydrogen bonded three-dimensional network involving all their N, H, and O atoms. The repeating unit of this network is a N4O4(μ-H)12 cube with N-H = 1.19(2) Å and O···H = 1.98(2)Å . Raman and IR spectra were recorded between 150 and 4000 cm-1. All the expected internal modes of the complex ions could be detected and assigned. The crystallographically different ClO4 anions have nearly the same vibrational spectra, only a slight splitting of two IR modes is observed

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