scholarly journals Synthesis, X-Ray Structure, and Characterization ofCatena-bis(benzoate)bis{N,N-bis(2-hydroxyethyl)glycinate}cadmium(II)

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Eugenia Katsoulakou ◽  
Konstantis F. Konidaris ◽  
Catherine P. Raptopoulou ◽  
Vassilis Psyharis ◽  
Evy Manessi-Zoupa ◽  
...  
Keyword(s):  
The Other ◽  
Polymeric Compound ◽  
Space Group ◽  
X Ray ◽  
Coordination Modes ◽  
Lattice Constants ◽  
Hydroxyl Oxygen ◽  
Carboxylate Oxygen ◽  
Trigonal Prismatic ◽  
Oxygen Atoms

The reaction of -bis(2-hydroxyethyl)glycine (bicine; ) with in MeOH yielded the polymeric compound . The complex crystallizes in the tetragonal space group . The lattice constants are and  Å. The compound contains chains of repeating units. One atom is coordinated by two carboxylate oxygen, four hydroxyl oxygen, and two nitrogen atoms from two symmetry-related 2.21111 (Harris notation) ligands. The other atom is coordinated by six carboxylate oxygen atoms, four from two ligands and two from the monodentate benzoate groups. Each bicinate(-1) ligand chelates the 8-coordinate, square antiprismatic atom through one carboxylate oxygen, the nitrogen, and both hydroxyl oxygen atoms and bridges the second, six-coordinate trigonal prismatic center through its carboxylate oxygen atoms. Compound1is the first structurally characterized cadmium(II) complex containing any anionic form of bicine as ligand. IR data of1are discussed in terms of the coordination modes of the ligands and the known structure.

Organoamido- and Aryloxo-lanthanoids. X. Tris(η2-3,5-di-t-butylpyrazolato)lanthanoid(III) Complexes and the X-Ray Crystal Structure of Er(η2-But2pz)3(thf)2

1994 ◽  
Vol 47 (7) ◽  
pp. 1223 ◽  
Author(s):  
JE Cosgriff ◽  
GB Deacon ◽  
BM Gatehouse ◽  
H Hemling ◽  
H Schumann
Keyword(s):  
Crystal Structure ◽  
Triphenylphosphine Oxide ◽  
The Other ◽  
Monoclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Oxygen Atoms

The complexes Ln (But2pz)3( thf )2 ( Ln = Y, La, Pr, Nd , Sm, Gd, Dy , Er , Yb, Lu; But2pz- = 3,5-di-t-butylpyrazolate; thf = tetrahydrofuran ), and [ Ln (But2pz)3(OPPh3)2].( dme )n ( Ln = La, n = ⅔ ; Ln = Er , n = 1; dme = 1,2-dimethoxyethane) have been prepared by reaction of the lanthanoid metal with bis ( pentafluorophenyl )mercury and the corresponding pyrazole in either thf , or in dme in the presence of triphenylphosphine oxide. The X-ray crystal structure of Er (η2-But2pz)3( thf )2 [monoclinic, space group P21 (No. 4), a 9.738(4), b 19.602(4), c 11.636(4) Ǻ, β 99.42(3)°, R 0.0374 for 3667 observed reflections] shows the complex to be an eight-coordinate monomer with three chelating But2pz ligands . The arrangement of centres ( Cen ) of the N-N bonds of the But2pz ligands [< Er -N> 2.336 Ǻ; Cen-Er-Cen 140.1(4)°, 110.3(4)° and 109.6(4)°] and the thf oxygen atoms [< Er -O> 2.351 Ǻ; O- Er -O 140.1(4)°] is intermediate between trigonal bipyramidal and square pyramidal. The other Ln (But2pz)3( thf )2 complexes and Ln (But2pz)3(OPPh3)2 are considered to have similar structures.

Formamidinhim-Hexachloroferrat(III) Synthese und Kristallstruktur / Formamidinium-Hexachloroferrate(III) Synthesis and Crystal Structure

1985 ◽  
Vol 40 (3) ◽  
pp. 443-446 ◽  
Author(s):  
Udo Demant ◽  
Elke Conradi ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Diffraction Data ◽  
The Other ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Positional Disorder ◽  
Lattice Constants ◽  
Bond Lengths

[HC(NH2)2]3FeCl6 was obtained together with other products from the reaction of S4N4 with HCl in H2CCl2 in the presence of FeCl3. Its crystal structure was determined from X-ray diffraction data (473 independent observed reflexions, R = 0.047). Lattice constants: a = 961.6, c = 876.4 pm; tetragonal, space group P42/m, Z = 2. Of the two crystallographically independent formamidinium ions HC(NH2)2⊕, one exhibits positional disorder; the other one has C-N bond lengths of 128 pm. The FeCl63⊖ ions have symmetry C2h, but the deviation from Oh is small.

Crystal and Molecular Structure of 1,11-bis(Tropolone)-3,6,9-trioxaundecane · RbI

1980 ◽  
Vol 35 (12) ◽  
pp. 1533-1537 ◽  
Author(s):  
K. K. Chacko ◽  
W. Saenger
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Type Structure ◽  
The Other ◽  
Space Group ◽  
X Ray ◽  
Circular Structure ◽  
Cell Dimensions ◽  
Oxygen Atoms

Abstract The complex between the polyether ligand 1,11-bis(tropolone)-3,6,9-trioxaundecane and RbI crystallizes in space group P21/c with cell dimensions a = 11.383(4), b = 14.493(5), c = 16.122(6) Å and β = 111.02(5)° with Z = 4. The structure was solved on the basis of 3734 X-ray reflections measured on a diffractometer with CuKα-radiation and refined to an R of 0.101. The polyether wraps around the Rb+ in a circular structure. One of the tropolone rings is elevated in order to avoid collision. Rb+ is located 1.224(6) Å above the plane formed by five oxygen atoms of the ligand, it is coordinated to I -(3.666(2)Å) and to all oxygens. The Rb+ ··· O distances of the least electronegative “ester oxygens”, 3.14(1) Å and 3.18(1) Å are significantly longer compared to the other Rb+···O distances in the range 2.81(1) Å to 3.08(1) Å. The conformation about the C-C and C-O bonds of the ligand are gauche and trans as generally found in such molecules. The two tropolone seven-membered rings are slightly non-planar and display an envelope-type structure.

scholarly journals Caesium propanoate monohydrate

2020 ◽  
Vol 76 (8) ◽  
pp. 1307-1310 ◽  
Author(s):  
Erika Samolová ◽  
Jan Fábry
Keyword(s):  
Hydrogen Bonds ◽  
General Position ◽  
Repeat Unit ◽  
Unit Cell ◽  
The Other ◽  
Water Molecules ◽  
Special Position ◽  
Space Group ◽  
Trigonal Prismatic ◽  
Oxygen Atoms

Caesium propanoate monohydrate, Cs+·C3H5O2 −·H2O, is composed of two symmetry-independent Cs+ cations, which are situated on the special position 4e of space group P\overline421 m, one symmetry-independent propanoate molecule in a general position and a pair of water molecules also situated on special position 4e. Two pairs of these symmetry-independent cations, four propanoate molecules and two pairs of symmetry-independent water molecules form a repeat unit. These units form columns that are directed along the c axis and possess symmetry mm2. There are four such columns passing through each unit cell. Each column is interconnected to its neighbours by four bifurcated three-centred Ow—H...Op (w = water, p = propanoate) hydrogen bonds of moderate strength. There are also four intramolecular Ow—H...Op hydrogen bonds of moderate strength within each column. One Cs+ cation is coordinated by six oxygen atoms (two water and four carboxylate) in a trigonal–prismatic geometry, while the other Cs+ cation is coordinated by four water and four carboxylate O atoms in a tetragonal–prismatic arrangement.

Notizen: Zur Reaktion von [(η3-C4H7)PdCl]2 mit Se(SiMe3)2 Die Kristallstruktur von [(η3-C4H7)6Pd6Se3] / Reaction of [(η3-C4H7)PdCl]2 with Se(SiMe3)2 The Crystal Structure of [(η3-C4H7)6Pd6Se3]

1988 ◽  
Vol 43 (5) ◽  
pp. 634-636 ◽  
Author(s):  
Dieter Fenske ◽  
Achim Hollnagel ◽  
Kurt Merzweiler
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Unit Cell ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Trigonal Prismatic

[(η3-C4H7)PdCl]2 reacts with Se(SiMe3)2 to form [(η3-C4H7)6Pd6Se3] (1). 1 has been characterized by X-ray crystal structure analysis. It contains a distorted trigonal prismatic Pd6-cluster. Three faces of the Pd-prism are occupied by μ4-Se ligands. 1 crystallizes in the space group Pnma with 4 formula units per unit cell. The lattice constants at 200 K are: a = 1175.1(8), b = 1611.4(12), c = 1720.3(12) pm.

Synthese und Kristallstruktur von (Cu,Zn)3,75Mo3O12 / Synthesis and Crystal Structure of (Cu,Zn)3,75Mo3O12

1995 ◽  
Vol 50 (2) ◽  
pp. 247-251 ◽  
Author(s):  
H. Szillat ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Oxygen Atom ◽  
Single Crystals ◽  
The Other ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Occupancy Factor ◽  
X Ray ◽  
Group D ◽  
Oxygen Atoms

Single crystals of (Cu,Zn)3,75Mo3O12 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. (Cu,Zn)3,75Mo3O12 crystallizes orthorhombically, space group D24-P212121, Z = 4, a = 17.947(9), b = 5.092(3), c = 10.685(5) Å. It is isotypic to Cu3,85Mo3O12. All molybdenum atoms are tetrahedrally coordinated by oxygen atoms. There are layers of CuO6 and ZnO6 octahedra, while other metal sites are occupied by copper in a deformed prismatic coordination with one oxygen atom at a remarkably greater distance from copper than the other five. Some of the zinc atoms occupy positions in chains of face-sharing octahedra with an occupancy factor of 0.75. The crystal structure is discussed with respect to the isotypic compound Cu3,85Mo3O12 and compounds of the type CuLnMo2O8.

YLiSn — eine ternäre Verbindung mit verzerrtem Li-Sn-Wurtzitgerüst / YLiSn - a Ternary Compound with Distorted Li - Sn - Wurtzit - Type Lattice

1979 ◽  
Vol 34 (8) ◽  
pp. 1165-1166 ◽  
Author(s):  
Gunter Steinberg ◽  
Hans-Uwe Schuster
Keyword(s):  
Ternary Compound ◽  
Structure Determination ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Type Lattice

The X-ray structure determination of YLiSn showed that Li and Sn form a weakly distorted Wurtzit-type lattice, whose octahedral lacunas are occupied by Y. The lattice constants of the hoxagonally crystallizing compound are a = 929.6 pm and c = 734.6 pm, space group P 63mc, Z = 8

scholarly journals Synthesis, Crystal Structure and Magnetic Behaviour of Dimeric and Polymeric Gadolinium Trifluoroacetate Complexes

2006 ◽  
Vol 61 (6) ◽  
pp. 699-707 ◽  
Author(s):  
Daniela John ◽  
Alexander Rohde ◽  
Werner Urland
Keyword(s):  
Crystal Structure ◽  
Magnetic Behaviour ◽  
Magnetic Data ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Temperature Range ◽  
X Ray Crystallography ◽  
Carboxylate Groups

The gadolinium(III) trifluoroacetates ((CH3)2NH2)[Gd(CF3COO)4] (1), ((CH3)3NH)[Gd(CF3 COO)4(H2O)] (2), Gd(CF3COO)3(H2O)3 (3) as well as Gd2(CF3COO)6(H2O)2(phen)3 · C2H5OH (4) (phen = 1,10-phenanthroline) were synthesized and structurally characterized by X-ray crystallography. These compounds crystallize in the space group P1̅ (No. 2, Z = 2) (1, 2 and 4) and P 21/c (No. 14, Z = 4) (3), respectively, with the following lattice constants 1: a = 884.9(2), b = 1024.9(2), c = 1173.1(2) pm, α = 105.77(2), β = 99.51(2), γ = 107.93(2)°; 2: a = 965.1(1), b = 1028.6(1), c = 1271.3(2) pm, α = 111.83(2), β = 111.33(2), γ = 90.44(2)°; 3: a = 919.6(2), b = 1890.6(4), c = 978.7(2) pm, β = 113.94(2)°; 4: a = 1286.7(8), b = 1639.3(8), c = 1712.2(9) pm, α = 62.57(6), β = 84.13(5), γ = 68.28(5)°. The compounds consist of Gd3+ ions which are bridged by carboxylate groups either to chains (1 and 2) or to dimers (3 and 4). In addition to the Gd3+ dimers, compound (4) also contains monomeric Gd3+ units. The magnetic behaviour of 2 and 3 was investigated in a temperature range of 1.77 to 300 K. The magnetic data for these compounds indicate weak antiferromagnetic interactions

Anionische Komplexe [Mo2(O2CPh)4X2]2⊖ mit X = N3, Cl, Br. Die Kristallstruktur von (PPh4)2[Mo2(O2CPh)4Cl2] · 2CH2Cl2 / Anionic Complexes [Mo2(O2C-Ph)4X2]2⊖ with X = N3, Cl, Br. The Crystal Structure of (PPh4)2[Mo2(O2C-Ph)4Cl2] · 2CH2Cl2

1985 ◽  
Vol 40 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Kay Jansen ◽  
Kurt Dehnicke ◽  
Dieter Fenske
Keyword(s):  
Crystal Structure ◽  
Ir Spectra ◽  
Diffraction Data ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Anionic Complexes

The syntheses and IR spectra of the complexes [Mo2(O2C-Ph)4X2]2⊖ with X = N3, CI, Br and the counter ion PPh4⊕ are reported. The azido and the bromo complexes are obtained from a solution of [Mo2(O2CPh)4] with PPh4N3 in pyridine or by reaction with PPh4Br in CH2Br2, respectively. When (PPh4)2[Mo2(O2CPh)4(N3)2] is dissolved in CH2Cl2, nitrogen is evolved and the complex with X = CI is obtained. The crystal structure of (PPh4)2[Mo2(O2CPh)4Cl2] · 2CH2Cl2 was determined from X-ray diffraction data (5676 observed independent reflexions, R = 0.042). It crystallizes in the monoclinic space group P21/n with four formula units per unit cell; the lattice constants are a = 1549, b = 1400, c = 1648 pm, β = 94.6°. The centrosymmetric [Mo2(O2CPh)4Cl2]2⊖ ion has a rather short Mo-Mo bond of 213 pm, whereas the MoCl bonds are very long (288 pm)

Notizen: Einkristall-Strukturdaten einiger Fluoride und Cyanide A2IBIMIIIX6 der Elpasolithfamilie / Single Crystal Structural Data of Some Fluorides and Cyanides A2IBIMIIIX6 of the Elpasolite Family

1975 ◽  
Vol 30 (5-6) ◽  
pp. 462-464 ◽  
Author(s):  
R. Haegele ◽  
W. Verscharen ◽  
D. Babel
Keyword(s):  
Single Crystal ◽  
Structural Data ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Structure Determinations ◽  
Crystal Structural Data ◽  
Crystal Structural

The parameters of complete X-ray structure determinations are given for the fluoridesRb2NaFeF6 and Rb2KFeF6 (cubic), Cs2NaCrF6 and Cs2NaFeF6 (hexagonal-rhom-bohedral) and Cs2LiGaF6 (hexagonal). Space group and lattice constants of the monoclinic cyanides Cs2BFe(CN)6 (B = Na, K, Rb) are reported as well.

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