Die Kristallstruktur von Sc(CH3COO)3, ein Metall(III)acetat mit Kettenstruktur / Crystal Structure of Sc(CH3COO)3, a Metal(III) Acetate with a Chain Structure

1984 ◽  
Vol 39 (12) ◽  
pp. 1662-1663 ◽  
Author(s):  
Robert Fuchs ◽  
Joachim Strähle
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Linear Chain ◽  
Chain Structure ◽  
Close Packing ◽  
Hexagonal Close Packing ◽  
Polymeric Structure ◽  
Lattice Constants ◽  
Metal Atoms ◽  
A Chain

Sc(acO)3 was obtained from Sc2O3 and (CH3CO)2O or from Sc2(CO3)3 and acetic acid. Recrystallization in water yields hexagonal columns of anhydrous Sc(acO)3. It crystallizes in the space group P 63/mcm with the lattice constants a = 791.1(3) pm, c = 886.6(7) pm and z = 2. Sc(acO)3 exhibits a polymeric structure with a linear chain of metal atoms which are connected in each case by three bridging acetato groups. For the Sc atoms results a sixfold coordination in the form of a compressed octahedron with the symmetry D3d and with distances Sc-O = 208.4 pm. The columns of polymeric Sc(acO)3 are arranged like in an ideal hexagonal close packing of cylindrical rods.

Novel Synthetic Routes to s-Block Metal 2,5-Diphenylphospholides and Crystal Structures of the Bis(tetrahydrofuran) Complexes of the Potassium, Calcium, and Strontium Derivatives

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1360-1368 ◽  
Author(s):  
Katja Wimmer ◽  
Christin Birg ◽  
Robert Kretschmer ◽  
Tareq M.A. Al-Shboul ◽  
Helmar Görls ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Chain Structure ◽  
Molecular Structures ◽  
Metathesis Reaction ◽  
Sandwich Complex ◽  
Coordination Site ◽  
Metal Atoms ◽  
Synthetic Routes ◽  
A Chain

The reduction of 1,4-diphenyl-1,4-bis(diphenylphosphanyl)buta-1,3-diene (1) (1,4-diphenyl- NUPHOS) with potassium in THF yields bis(THF)potassium 2,5-diphenylphospholide (2) which crystallizes with a chain structure. The metathesis reaction of 2 with the iodides of calcium, strontium, and barium leads to the formation of [bis(THF)calcium bis(2,5-diphenylphospholide)] (3), [bis(THF)strontium bis(2,5-diphenylphospholide)] (4), and [bis(THF)barium bis(2,5-diphenylphospholide)] (5). The reaction of M{P(H)SiiPr3}2 with diphenylbutadiyne in THF also leads to the formation of the 2,5-diphenylphospholides of calcium (3), strontium (4), and barium (5). The molecular structures of 2 to 4 are discussed. The environment of the metal atoms is very similar in all these compounds: The metal atoms show an η5 coordination to the phospholide rings forming a bent sandwich complex. The open coordination site is occupied by two THF molecules

Hydrothermal Synthesis, Crystal Structure, and Magnetic Properties of a New Inorganic Vanadium(III) Phosphate with a Chain Structure

2008 ◽  
Vol 47 (21) ◽  
pp. 10062-10066 ◽  
Author(s):  
Stanislav Ferdov ◽  
Mario S. Reis ◽  
Zhi Lin ◽  
Rute A. Sá Ferreira
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Hydrothermal Synthesis ◽  
Chain Structure ◽  
A Chain

scholarly journals Kristallstruktur des Quecksilber(II)-Cryptats [Hg(cryptand 222)][{Hg(SCN)3}2] mit einem kettenförmigen Tri(thiocyanato)mercurat(II)-Anion / Crystal Structure of the Mercury(II) Cryptate [Hg(cryptand 222)][{Hg(SCN)3}2] Containing a Tri(thiocyanato)mercurate(II) Anion with a Chain Structure

1995 ◽  
Vol 50 (7) ◽  
pp. 993-996 ◽  
Author(s):  
Joachim Pickardt ◽  
Gill-Taik Gong ◽  
Isabella Hoffmeister
Keyword(s):  
Crystal Structure ◽  
Chain Structure ◽  
Mean Value ◽  
Mercury Atom ◽  
Space Group ◽  
A Chain ◽  
Polymeric Anion ◽  
Cryptand 222

The reaction of [2.2.2]cryptand, 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo- [8 .8 .8 ]hexacosane, with mercuric thiocyanate yields crystals of [Hg(cryptand 222 )][{Hg(SCN )3 }2]. The compound crystallizes monoclinically, space group C2/c, Z = 4, a = 2478.3(12), b = 1540.4(4), c = 1049.4(3) pm, β = 108.77(3)°. In the cation the mercury atom is 8 -coordinated by six oxygen and two nitrogen atoms with distances Hg -N 220(2) pm and Hg -O 268.8(9) pm (mean value). The polymeric anion consists of infinite chains -Hg -SCN -Hg - with bond distances Hg-S 254.2(4) and Hg-N 257(2) pm. Each Hg atom carries two additional terminal SCN ligands, with a mean Hg-S distance o f 244( 1) pm; the distance from Hg to the N atom of an SCN ligand of a neighbouring Hg atom is 300(2) pm, probably indicating an additional, although weak bonding.

Effects of solvents on the crystal structure of cross-linked lysozyme crystals

2018 ◽  
Vol 32 (19) ◽  
pp. 1840041
Author(s):  
Yohei Yamada ◽  
Shota Toyama ◽  
Tomoki Yabutani
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrochloric Acid ◽  
Dimethyl Sulfoxide ◽  
Optical Microscopy ◽  
Immersion Test ◽  
X Ray ◽  
Lattice Constants ◽  
X Ray Crystallography ◽  
Lysozyme Crystals

The effects of solvents on the structural stability of cross-linked lysozyme crystals were investigated by an immersion test using alkaline (0.1 M ammonia [NH3] and 0.1 M sodium hydroxide [NaOH]), acidic (0.1 M acetic acid [CH3COOH] and 0.1 M hydrochloric acid [HCl]) and organic (50% [v/v] and undiluted ethanol, acetone, 2-propanol and dimethyl sulfoxide [DMSO]) solvents. The morphology and lattice constants were monitored by optical microscopy and X-ray crystallography. The cross-linked crystals exhibited good stability against NH3, CH3COOH, HCl, ethanol, acetone and 2-propanol. However, samples preserved in DMSO and NaOH were severely degraded.

Synthese und Kristallstruktur von (TeCl3+)(MoOCl4–) / Synthesis and Crystal Structure of (TeCl3+)(MoOCl4–)

1991 ◽  
Vol 46 (2) ◽  
pp. 183-186
Keyword(s):  
Crystal Structure ◽  
Close Packing ◽  
Monoclinic Space Group ◽  
Chlorine Atoms ◽  
Synthesis And Crystal Structure ◽  
Lattice Constants ◽  
Layer Sequence ◽  
Octahedral Environment ◽  
Moisture Sensitive ◽  
Centrosymmetric Dimers

(TeCl3)(MoOCl4) is obtained by the reaction of TeCl4 and MoOCl3 in a sealed ampoule at 180 °C. It forms yellow-green moisture sensitive crystals. The crystal structure determination (lattice constants a = 734.8(1), b = 1281.5(3), c = 1172.2(2) pm, β = 94.62(2)°, monoclinic space group P 21/c, 2808 unique reflections for 92 parameters, final R = 0.029) shows that (TeCl3)(MoOCl4) consists of square pyramidal (MoOCl4-) anions and (TeCl3+) cations. The (MoOCl4-) anions are linked by asymmetric chlorine bridges and form centrosymmetric dimers (MoOCl4-)22- with the oxygen atoms located in the trans positions of the chlorine bridges. The coordination sphere for the Mo atom is a deformed octahedron of one oxygen and five chlorine atoms. Each trigonal pyramidal (TeCl3+) cation is connected by chlorine bridges to two neighboured (MoOCl4)22- anions resulting in a strongly deformed octahedral environment of six chlorine atoms for the Te atom. The MoOCl5 and TeCl6 octahedra are linked by edges and corners and form layers parallel to the be plane. Alternatively the structure can be regarded as a close packing of Cl and O atoms with the layer sequence ABAC, A ··· and Mo and Te atoms located in one quater of the octahedral holes.

Darstellung und Kristallstruktur von K2Pd02 / Synthesis and Crystal Structure of K2Pd02

1974 ◽  
Vol 29 (1-2) ◽  
pp. 10-12 ◽  
Author(s):  
Horst Sabrowsky ◽  
Welf Bronger ◽  
Dieter Schmitz
Keyword(s):  
Crystal Structure ◽  
Structure Type ◽  
Chain Structure ◽  
Unit Cell ◽  
One Dimension ◽  
Ternary Oxide ◽  
Orthorhombic Unit Cell ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
A Chain

The ternary oxide K2PdO2 has been prepared by a reaction between K2O and PdO. X-ray investigations suggest a chain-structure-type which corresponds to that of K2PtS2. The planar oxygen coordinations of the palladium atoms are connected laterally in one dimension. The orthorhombic unit cell (a = 8.523, b = 6.089, c = 3.119 Å) contains two formula units.

scholarly journals Crystal structure of bis(μ-2,3,4,5-tetrafluorobenzoato-κ2O:O′)bis[(1,10-phenanthroline-κ2N:N′)(2,3,4,5-tetrafluorobenzoato-κO)copper(II)] dihydrate

2014 ◽  
Vol 70 (11) ◽  
pp. m365-m366 ◽  
Author(s):  
Junshan Sun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Chain Structure ◽  
Water Molecules ◽  
Molecular Configuration ◽  
Centrosymmetric Dimer ◽  
Lattice Water ◽  
Phenanthroline Ligand ◽  
A Chain

In the title compound, [Cu2(C7HF4O2)4(C12H8N2)2]·2H2O, the CuIIion has a square-pyramidal coordination sphere. The basal plane consists of two N atoms [Cu—N = 2.008 (3) and 2.032 (3) Å] from the phenanthroline ligand, and of two carboxylate O atoms [Cu—O = 1.942 (3) and 1.948 (3) Å] from two 2,3,4,5-tetrafluorobenzoate anions. Another 2,3,4,5-tetrafluorobenzoate anion provides the apical carboxylate O atom [Cu—O = 2.262 (3) Å] and bridges two CuIIions into a binuclear centrosymmetric dimer. Intramolecular π–π interactions between one of the tetrafluorobenzene rings and the middle of the phenenanthroline rings [3.617 (3) Å] stabilize the molecular configuration. O—H...O hydrogen bonds between the lattice water molecules and the unbound carboxylate O atoms of the metal complexes leads to the formation of a chain structure parallel to [100].

Redetermination of [bis(2-pyridyl)amine-N,N′]copper(II) diperchlorate

2000 ◽  
Vol 57 (1) ◽  
pp. m25-m27 ◽  
Author(s):  
Miao Du ◽  
Xian-He Bu ◽  
Lin-Hong Weng ◽  
Xue-Bing Leng ◽  
Ya-Mei Guo
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Sphere ◽  
Chain Structure ◽  
Title Complex ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
A Chain ◽  
Distorted Tetrahedral Coordination ◽  
Close Contacts

In the crystal structure of the title complex, [Cu(C10H9N3)2](ClO4)2, the CuIIcenter is four-coordinated by the nitrogen donors of the pyridine rings of the ligand, bis(2-pyridyl)amine. The crystal structure reveals that the CuN4coordination sphere has a distorted tetrahedral coordination geometry with a crystallographicC2axis through the CuIIcenter. The perchlorate anions link the complex cations to form a chain structure through C—H...O close contacts and N—H...O hydrogen bonds.

Synthese und Kristallstruktur von [Hg2(p-SC6H4NO2)]NO3 / Synthesis and Crystal Structure of [Hg2(p-SC6H4NO2)]NO3

1990 ◽  
Vol 45 (8) ◽  
pp. 1193-1196 ◽  
Author(s):  
Klaus Brodersen ◽  
Axel Knörr
Keyword(s):  
Crystal Structure ◽  
Chain Structure ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Nitrate Ions ◽  
R Value ◽  
A Chain

[Hg2(p-SC6H4NO2)]NO3 is formed by the reaction of p-nitrothiophenol with dimercury(I)-dinitrate in methanol. It crystallizes in the monoclinic space group P21/n with a = 1175.5(9) pm, b = 1079.8(8) pm, c = 876.2(8) pm, β = 110.74(4)° and Z = 4. The crystal structure has been determined by X-ray diffraction and refined to an R-value of 0.052. The results show that the compound exists as a chain structure of [—®S(C6H4NO2)— Hg— Hg—]n with nitrate ions connecting the chains.

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