CsPr2(CH3COO)7, ein caesiumarmes wasserfreies ternäres Caesium-Praseodym-Acetat / CsPr2(CH3COO)7, a Cesium Poor Anhydrous Ternary Cesium Praseodymium(III) Acetate

1993 ◽  
Vol 48 (7) ◽  
pp. 886-892 ◽  
Author(s):  
Adalbert Lossin ◽  
Gerd Meyer
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Acid Solution ◽  
Single Crystals ◽  
Acetic Acid Solution ◽  
Three Dimensional ◽  
Molar Ratio ◽  
Triclinic System ◽  
Dimensional Network ◽  
Oxygen Atoms

Single crystals of CsPr2(CH3COO)7 were obtained from an acetic acid solution of Pr(CH3COO)3 • H2O and Cs2CO3 in a molar ratio of 4:1 at 120°C. It crystallizes in the triclinic system, PĪ (no. 2), Z = 2, a = 1028.1(5), b = 1034.6(5), c = 1199.4(6) pm, α = 84.82(2), β = 67.07(3), γ = 76.01(2)°, Vm = 343.3(3) cm3/mol, R = 0.031, Rw = 0.027. The crystal structure contains infinite chains, 1∞[Pr2(CH3COO)6], running along the [110] direction. The chains are built up by bridging acetate ions coordinated to two crystallographically different Pr3+ ions which are both surrounded by 9 oxygen ligands. These chains are linked by “intercalated” Cs(CH3COO) to layers parallel (100). Cs+ has contacts to oxygen atoms of neighbouring layers, such that a three-dimensional network is formed.

scholarly journals Synthesis and Crystal Structure of the New Telluric Acid Adduct (RbCl)3·Te(OH)6

2012 ◽  
Vol 67 (1) ◽  
pp. 1-4
Author(s):  
Dirk Mahlmeister ◽  
Elisabeth Irran
Keyword(s):  
Crystal Structure ◽  
Three Dimensional ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Tellurium Atom ◽  
Synthesis And Crystal Structure ◽  
Dimensional Network ◽  
Tricapped Trigonal Prism ◽  
Acid Adduct ◽  
Oxygen Atoms

The new telluric acid adduct (RbCl)3 ・ Te(OH)6 was prepared by dissolving RbCl and Te(OH)6 in the molar ratio of 3 : 1 in deionized water at r. t. and slow evaporation of the solvent in air. The crystal structure of the colorless crystals was determined with single-crystal X-ray diffraction (trigonal space group: R3̄c (no. 167), a = 14.4392(8), c = 10.4301(16) Å , Z = 6). In (RbCl)3 ・ Te(OH)6, the rubidium atom is surrounded by five chlorine and four oxygen atoms in form of an irregular tricapped trigonal prism. Each tellurium atom is octahedrally surrounded by six oxygen atoms. The Te(OH)6 octahedra and the RbCl5O4 polyhedra are linked to a dense three-dimensional network which is additionally strengthened by hydrogen bonds.

NdClSeO3 and ErClSeO3: First Chloride-Selenites of the Rare Earth Elements

2002 ◽  
Vol 57 (12) ◽  
pp. 1414-1418 ◽  
Author(s):  
Mathias S. Wickleder
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystals ◽  
Three Dimensional ◽  
Chloride Ions ◽  
Dimensional Structure ◽  
Electron Pairs ◽  
Dimensional Network ◽  
Stereochemical Activity ◽  
Oxygen Atoms

Violet single crystals of NdClSeO3 (Pnma, Z = 8, a = 1115.3(2), b = 535.19(6), c = 1356.8(1) pm, Rall = 0.0281) were obtained from the reaction of Nd2O3, NdCl3, and SeO2 in evacuated silica ampoules. The analogous procedure using Er2O3 and ErCl3 led to pink single crystals of ErClSeO3 (Pnma, Z = 4, a = 721.8(1), b = 692.2(1), c = 874.3(2) pm, Rall = 0.0305). The crystal structure of NdClSeO3 contains two crystallographically different neodymium ions. Nd(2)3+ is coordinated by four oxygen atoms and four chloride ions while eight oxygen atoms and one Cl− ion are connected to Nd(1)3+. The linkage of the polyhedra leads to a three-dimensional structure. In the structure of ErClSeO3 the Er3+ ion is coordinated by two Cl− ions, three O-monodentate SeO32− and one O,O-chelating SeO32− groups. The [ErO5Cl2] polyhedra can be seen as pentagonal bipyramids, which are connected in the [010] direction via opposite edges of oxygen atoms to infinite chains. These are further linked via chloride ions to give a three-dimensional network. In both crystal structures a prominent stereochemical activity of the lone electron pairs of the selenite ions can be observed.

Darstellung und Kristallstruktur von K2Sb4S7 · H2O / Preparation and Crystal Structure of K2Sb4S7 · H2O

1979 ◽  
Vol 34 (3) ◽  
pp. 383-385 ◽  
Author(s):  
Brigitte Eisenmann ◽  
Herbert Schäfer
Keyword(s):  
Crystal Structure ◽  
Free Electron ◽  
Electron Pair ◽  
Three Dimensional ◽  
The Other ◽  
Water Molecules ◽  
Triclinic System ◽  
Dimensional Network ◽  
Free Electron Pair

Abstract K2Sb4S7 · H2O crystallizes in the triclinic system with a = 1171.4(5) pm, b = 952.0(5) pm, c = 715.6(5) pm and α = 99.36(5)°, β = 86.80(5)°, γ= 103.48(5)°. One half of the Sb atoms has three sulfur neighbours forming with the free electron pair a ψ-ShS3 tetrahedron, while the other half is coordinated by four S atoms to build a ψ-trigonal SbS4 bipyramid. These polyhedra are connected by common edges and corners to a three-dimensional network with two types of channels, in which either K+ ions only or K+ ions and water molecules are located.

Crystal and Molecular Structure of 3-Iodo-2-propynyl-N-butylcarbamate

1997 ◽  
Vol 52 (2) ◽  
pp. 256-258 ◽  
Author(s):  
Evgeni V. Avtomonov ◽  
Rainer Grüning ◽  
Jörg Lorberth
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dimensional Network ◽  
Carbamate Group ◽  
Oxygen Atoms

Abstract The crystal structure of the title compound has been determined by X-ray diffraction methods. Due to the Lewis acidic character of the iodine substituent a “zig-zag” chain is formed via intermolecular interactions (2.933(4) A) between iodine and oxygen atoms of theocarbamate moiety. A three-dimensional network is formed through hydrogen-bridging (2.04 A) between NH-groups and the oxygen atoms of the neighbouring carbamate group of the next molecule.

scholarly journals Crystal structure and Hirshfeld analysis of trans-bis(5-fluoroindoline-2,3-dione 3-oximato-κ2 O 2,N 3)-trans-bis(pyridine-κN)copper(II)

2018 ◽  
Vol 74 (4) ◽  
pp. 428-432
Author(s):  
Ana Paula Lopes de Melo ◽  
Leandro Bresolin ◽  
Bianca Barreto Martins ◽  
Vanessa Carratu Gervini ◽  
Adriano Bof de Oliveira
Keyword(s):  
Crystal Structure ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Molar Ratio ◽  
Pyridine Ligands ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Distorted Octahedral ◽  
Hirshfeld Analysis ◽  
Isatin Derivatives

The reaction in methanol of CuII acetate monohydrate with 5-fluoroisatin 3-oxime deprotonated with KOH in a 1:2 molar ratio and recrystallization from pyridine yielded the title compound, [Cu(C8H4FN2O2)2(C5H5N)2]. In the centrosymmetric complex, the anionic form of the isatin oxime acts as a κ2 N,O donor, building five-membered metallarings. The CuII cation is sixfold coordinated in a slightly distorted octahedral environment by two trans, equatorial, anionic isatin derivatives and two trans pyridine ligands in axial positions. The complexes are linked by hydrogen bonding into a three-dimensional network, which is also stabilized by π–π stacking interactions [centroid-to-centroid distance = 3.7352 (9) Å] and C—H...π contacts. The Hirshfeld surface analysis indicates that the major contributions for the crystal packing are H...H (31.80%), H...C (24.30%), H...O (15.20%) and H...F (10.80%). This work is the second report in the literature of a crystal structure of a coordination compound with isatin 3-oxime ligands (coordination chemistry).

scholarly journals Synthesis, crystal structure and charge-distribution validation of a new alluaudite-type phosphate, Na2.22Mn0.87In1.68(PO4)3

2020 ◽  
Vol 76 (8) ◽  
pp. 1369-1372
Author(s):  
Abdessalem Badri ◽  
Inmaculada Alvarez-Serrano ◽  
María Luisa López ◽  
Mongi Ben Amara
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Three Dimensional ◽  
Structure Type ◽  
X Ray Diffraction ◽  
Flux Method ◽  
X Ray ◽  
Coordination Numbers ◽  
Dimensional Network ◽  
Anionic Framework

Na2.22Mn0.87In1.68(PO4)3, sodium manganese indium tris(phosphate) (2.22/0.87/1.68), was obtained in the form of single crystals by a flux method and was structurally characterized by single-crystal X-ray diffraction. The compound belongs to the alluaudite structure type (space group C2/c) with general formula X(2)X(1)M(1)M(2)2(PO4)3. The X(2) and X(1) sites are partially occupied by sodium [occupancy 0.7676 (17) and 1/2] while the M(1) and M(2) sites are fully occupied within a mixed distribution of sodium/manganese(II) and manganese(II)/indium, respectively. The three-dimensional anionic framework is built up on the basis of M(2)2O10 dimers that share opposite edges with M(1)O6 octahedra, thus forming infinite chains extending parallel to [10\overline{1}]. The linkage between these chains is ensured by PO4 tetrahedra through common vertices. The three-dimensional network thus constructed delimits two types of hexagonal channels, resulting from the catenation of M(2)2O10 dimers, M(1)O6 octahedra and PO4 tetrahedra through edge- and corner-sharing. The channels are occupied by Na+ cations with coordination numbers of seven and eight.

scholarly journals Synthesis and crystal structure of a new hybrid organic–inorganic material containing neutral molecules, cations and heptamolybdate anions

2019 ◽  
Vol 75 (7) ◽  
pp. 1001-1004 ◽  
Author(s):  
Bougar Sarr ◽  
Abdou Mbaye ◽  
Wally Diallo ◽  
Cheikh Abdoul Khadir Diop ◽  
Mamadou Sidibe ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Acid Solution ◽  
Inorganic Material ◽  
Three Dimensional ◽  
Cluster Anion ◽  
Water Molecules ◽  
Ammonium Heptamolybdate ◽  
Synthesis And Crystal Structure ◽  
Dimensional Network

The title compound, hexakis(2-methyl-1H-imidazol-3-ium) heptamolybdate 2-methyl-1H-imidazole disolvate dihydrate, (C4H7N2)6[Mo7O24]·2C4H6N2·2H2O, was prepared from 2-methylimidazole and ammonium heptamolybdate tetrahydrate in acid solution. The [Mo7O24]6− heptamolybdate cluster anion is accompanied by six protonated (C4H7N2)+ 2-methylimidazolium cations, two neutral C4H6N2 2-methylimidazole molecules and two water molecules of crystallization. The cluster consists of seven distorted MoO6 octahedra sharing edges or vertices. In the crystal, the components are linked by N—H...N, N—H...O, O—H...O, N—H...(O,O) and O—H...(O,O) hydrogen bonds, generating a three-dimensional network. Weak C—H...O interactions consolidate the packing.

scholarly journals Crystal structure of 2-[9-(2-hydroxyphenyl)-1,8-dioxo-1,2,3,4,5,6,7,8,9,10-decahydroacridin-10-yl]acetic acid

2015 ◽  
Vol 71 (12) ◽  
pp. o963-o964 ◽  
Author(s):  
Mehmet Akkurt ◽  
Jerry P. Jasinski ◽  
Shaaban K. Mohamed ◽  
Omyma A. Abd Allah ◽  
Asmaa H. A. Tamam ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Acetic Acid ◽  
Three Dimensional ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Dihydropyridine Ring ◽  
Twisted Boat ◽  
Phenol Ring

The title compound, C21H21NO5, crystallizes with two molecules in the asymmetric unit. In each molecule, the central 1,4-dihydropyridine ring adopts a shallow sofa conformations (with the C atom bearing the phenol ring as the flap), whereas the pendant cyclohexene rings both have twisted-boat conformations. Each molecule features an intramolecular O—H...O hydrogen bond, which closes anS(8) ring. In the crystal, the molecules are linked by O—H...O, C—H...O and C—H...π interactions, forming a three-dimensional network.

scholarly journals Synthesis and crystal structure of NaCuIn(PO4)2

2020 ◽  
Vol 76 (3) ◽  
pp. 366-369
Author(s):  
Elhassan Benhsina ◽  
Jamal Khmiyas ◽  
Said Ouaatta ◽  
Abderrazzak Assani ◽  
Mohamed Saadi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Three Dimensional ◽  
Atmospheric Conditions ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Sodium Cations ◽  
Oxygen Atoms

Single crystals of sodium copper(II) indium bis[phosphate(V)], NaCuIn(PO4)2, were grown from the melt under atmospheric conditions. The title phosphate crystallizes in the space group P21/n and is isotypic with KCuFe(PO4)2. In the crystal, two [CuO5] trigonal bipyramids share an edge to form a dimer [Cu2O8] that is connected to two PO4 tetrahedra. The obtained [Cu2P2O12] units are interconnected through vertices to form sheets that are sandwiched between undulating layers resulting from the junction of PO4 tetrahedra and [InO6] octahedra. The two types of layers are alternately stacked along [101] and are joined into a three-dimensional framework through vertex- and edge-sharing, leaving channels parallel to the stacking direction. The channels host the sodium cations that are surrounded by four oxygen atoms in form of a distorted disphenoid.

5-Fluorouracil-1-acetic acid

2006 ◽  
Vol 62 (4) ◽  
pp. o1504-o1506 ◽  
Author(s):  
Jian-Qiang Qu ◽  
Ling Qu ◽  
Xiao-Fei Jia
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Acid Group ◽  
Compound C ◽  
Dimensional Network

In the title compound, C6H5FN2O4, the acetic acid group lies out of the pyrimidine plane. In the crystal structure, molecules are connected by intermolecular N—H...O, O—H...O and C—H...O hydrogen bonds, forming a three-dimensional network.

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