The Synthesis, Mössbauer and Infrared Spectra of some Dialkyltin Salts of Phosphorus Oxy-acids

1973 ◽  
Vol 51 (22) ◽  
pp. 3702-3711 ◽  
Author(s):  
T. Chivers ◽  
J. H. G. Van Roode ◽  
J. N. R. Ruddick ◽  
J. R. Sams
Keyword(s):  
Aqueous Solution ◽  
Asymmetry Parameter ◽  
Methyl Groups ◽  
Formula Unit ◽  
Sodium Salts ◽  
Trigonal Bipyramidal ◽  
Alkyl Groups ◽  
In Trans ◽  
Polymeric Structures ◽  
Distorted Trigonal Bipyramidal

A number of dialkyltin(IV) salts of phosphorus oxy-acids R2Sn(PO2H2)2 (R = CH3, C2H5, n-C4H9), R2SnPO3X (R = CH3, C2H5, n-C4H9, X = H; R = CH3, X = F, OH), and [(CH3)2Sn]3(PO4)2 have been prepared in aqueous solution from the appropriate dialkyltin(IV) dichloride and the sodium salts of phosphorus oxy-acids.Infrared and 119Sn Mössbauer spectra of the dialkyltin dihypophosphites, R2Sn(PO2H2)2, are consistent with hexacoordination for tin with the alkyl groups in trans-octahedral positions and bidentate bridging hypophosphite groups coordinated through oxygens. For the dialkyltin phosphites, R2SnPO3X, polymeric structures with a non-linear R2Sn arrangement are involved, and the magnetic hyperfine Mössbauer spectrum (X = F) is consistent with either distorted trans-octahedral or distorted trigonal bipyramidal structures (with both apical or both equatorial methyl groups). In [(CH3)2Sn]3(PO4)2 the three tin environments are indistinguishable by Mössbauer spectroscopy, but the high value of the asymmetry parameter [Formula: see text] suggests penta- rather than hexacoordination about tin, for which at least one three-coordinate oxygen per formula unit must be invoked.

scholarly journals Di-μ-oxido-bis[bis(diisopropylacetamidinato)-κN;κ2N,N′-germanium(IV)]

2013 ◽  
Vol 69 (12) ◽  
pp. m686-m687 ◽  
Author(s):  
Ronny Syre ◽  
Nancy Frenzel ◽  
Cristian G. Hrib ◽  
Edmund P. Burte ◽  
Peter G. Jones ◽  
...  
Keyword(s):  
Title Compound ◽  
Methyl Groups ◽  
Isopropyl Group ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title compound, [Ge2(C8H17N2)4O2], crystallizes with imposed twofold symmetry, which allows the monodentate amidinate ligands to be arranged in acisoidfashion. The independent Ge—O distances within the central Ge2O2ring, which is essentially planar (r.m.s. deviation = 0.039 Å), are 1.7797 (8) and 1.8568 (8) Å. The germanium centres adopt a distorted trigonal–bipyramidal geometry, being coordinated by the two O atoms and by one bidentate and one monodentate amidinate ligand (three N atoms). OneN-isopropyl group is disordered over two positions; these are mutually exclusive because of `collisions' between symmetry-equivalent methyl groups and thus each has 0.5 occupancy.

scholarly journals Bis[μ-2-(2H-benzotriazol-2-yl)-4-methylphenolato]bis[dimethylaluminium(III)]

2009 ◽  
Vol 65 (6) ◽  
pp. m670-m670 ◽  
Author(s):  
Chen-Yu Li ◽  
Chia-Her Lin ◽  
Bao-Tsan Ko
Keyword(s):  
Title Complex ◽  
Methyl Groups ◽  
Asymmetric Unit ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title complex, [Al2(CH3)4(C13H10N3O)2], is dimeric, bridged through the O atoms of the phenolate anions. The asymmetric unit contains one half of the molecule and there is a crystallographic inversion centre in this molecule. Each Al atom is pentacoordinated by one N atom and two bridging O atoms of twoN,O-bidentate benzotriazolylphenolate ligands and by two C atoms from two methyl groups, forming a distorted trigonal–bipyramidal environment.

Darstellung und Kristallstruktur von Zinkazid · 4-Methylpyridin / Preparation and Crystal Structure of Zinc Azide · 4-Methylpyridine

1988 ◽  
Vol 43 (3) ◽  
pp. 253-256 ◽  
Author(s):  
Franz A. Mautner ◽  
Harald Krischner ◽  
Christoph Kratky
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Single Crystal ◽  
Zinc Atom ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

Zinc azide · 4-methylpyridine (1) is formed by the reaction of zinc azide with the corresponding pyridine in aqueous solution. The crystal structure was determined by single crystal X-ray diffraction methods. The crystals of 1 are monoclinic, space group C2/c, Z = 4, a = 1085.5(2), b = 1692.7(11), c = 619.7(6) pm, β = 113.47(5)°. Each zinc atom is surrounded by five nitrogen atoms (four from azide groups and one from the pyridine adduct) in a distorted trigonal bipyramidal fashion. The ZnN5-polyhedra share common edges to form chains along the crystallographic c-axis.

scholarly journals Crystal structure of chlorido{tris[2-(isopropylsulfanyl)phenyl]phosphane-κ4 P,S,S′,S′′}nickel(II) trifluoromethanesulfonate

2019 ◽  
Vol 75 (3) ◽  
pp. 350-353
Author(s):  
Nobuhiro Takeda ◽  
Rin Oma ◽  
Masafumi Unno
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Equatorial Plane ◽  
Complex Cation ◽  
Methyl Groups ◽  
Coordination Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Cl Atom ◽  
Distorted Trigonal Bipyramidal

The complex cation of the title compound, [NiCl{P(C6H4-2-S-i-Pr)3}](CF3SO3), has a slightly distorted trigonal–bipyramidal coordination geometry in which three S atoms are located in the equatorial plane, and one P and one Cl atom in the apical positions. In the cation, there are two intramolecular C—H...S hydrogen bonds. In the crystal, there are some intermolecular C—H...O and C—H...F hydrogen bonds formed between the cation and the anion. The trifluoromethanesulfonate anion and one of the methyl groups are both disordered over two sets of sites with occupancies of 0.629 (17):0.371 (17) and 0.786 (14):0.214 (14), respectively.

Synthesis and Crystal and Molecular Structures of the N,N-Dimethylethanol-aminogallane and N,N-Dimethylethanolaminogallium Dimethyl Dimers

1975 ◽  
Vol 53 (1) ◽  
pp. 58-66 ◽  
Author(s):  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Least Squares ◽  
Molecular Structures ◽  
Methyl Groups ◽  
Steric Interactions ◽  
Full Matrix ◽  
Space Group ◽  
Trigonal Bipyramidal Geometry ◽  
Crystal And Molecular Structures ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

Crystals of the N,N-dimethylethanolaminogallane dimer 1a are monoclinic, a = 8.540(1), b = 7.0433(7), c = 12.227(6) Å, β = 92.94(3)°, Z = 2, space group P21/c and crystals of the N,N-dimethylethanolaminogallium dimethyl dimer 1b are orthorhombic, a = 15.608(3), b = 11.655(2), c = 10.266(2) Å, Z = 4, space group Pccn. Both structures were determined by Patterson and Fourier syntheses and were refined by full-matrix least-squares procedures to final R values of 0.039 and 0.053 for 1062 and 1155 reflections with 1 ≥ 3σ(I) respectively. Both structures feature well-separated centrosymmetric dimeric units occurring via the formation of four-membered Ga2O2 rings. The five-coordinate gallium atoms have distorted trigonal bipyramidal geometry. Steric interactions between methyl groups in 1b are believed responsible for the lengthening of the axial Ga—N distance from 2.279(3) in 1a to 2.471(4) Å in 1b. Other bond distances are: for 1a; Ga—O (axial), 2.053(3), Ga—O, 1.911(3), Ga—H, 1.50(7) and 1.73(5), O—C, 1.369(5), N—C, 1.466 – 1.485(6), C—C, 1.512(7), and mean C—H, 1.05; for 1b; Ga—O (axial), 2.078(3), Ga—O, 1.913(3), Ga—C, 1.936(6) and 1.948(7), O—C, 1.382(7), N—C, 1.452–1.482(7−8), C—C, 1.516(9), and mean C—H, 1.01 Å.

scholarly journals Evaluation of N-Alkyl-bis-o-aminobenzamide Receptors for the Determination and Separation of Metal Ions by Fluorescence, UV-Visible Spectrometry and Zeta Potential

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1737 ◽  
Author(s):  
Marisela Martinez-Quiroz ◽  
Xiomara E. Aguilar-Martinez ◽  
Mercedes T. Oropeza-Guzman ◽  
Ricardo Valdez ◽  
Eduardo A. Lopez-Maldonado
Keyword(s):  
Aqueous Solution ◽  
Zeta Potential ◽  
Metal Ions ◽  
Environmental Concern ◽  
Separation Of Metal Ions ◽  
Complexing Capacity ◽  
Alkyl Groups ◽  
Molecular Fluorescence ◽  
Uv Visible ◽  
Phase Sensor

This paper presents the synthesis and evaluation of physicochemical behavior of a new series of N-alkyl-bis-o-aminobenzamides (BOABs) in aqueous solution. The study was targeted to the complexing capacity of five metal ions (Fe2+, Cu2+, Cd2+, Hg2+ and Pb2+) of environmental concern as the medullar principle of a liquid phase sensor for its application in the determination of these metal ions due to its versatility of use. Molecular fluorescence, UV-visible and Zeta potential were measured for five BOABs and the effect of alkyl groups with different central chain length (n = 3, 4, 6, 8 and 10) on physicochemical performance determined. The results have shown that these derivatives present higher sensibility and selectivity for Cu2+ even in the presence of the other metal ions. An additional application test was done adding a pectin (0.1 wt %) solution to the BOAB-Cu+2 complex to obtain a precipitate (flocs) as a potential selective separation process of Cu from aqueous solution. The solid was then lyophilized and analyzed by SEM-EDS, the images showed spheric forms containing Cu+2 with diameter of approximately of 8 μm and 30 wt %.

scholarly journals The crystal and molecular structure of the bis(N,N,N′,N′-tetramethylethanediamine) adduct of I(Br)InInBr2, In2Br3I•2C6H16N2, an indium–indium bonded molecule

1984 ◽  
Vol 62 (3) ◽  
pp. 601-605 ◽  
Author(s):  
Masood A. Khan ◽  
Clovis Peppe ◽  
Dennis G. Tuck
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Crystal And Molecular Structure ◽  
Heavy Atom ◽  
Orthorhombic Space Group ◽  
Trigonal Bipyramidal ◽  
Cell Dimensions ◽  
Unit Cell Dimensions ◽  
Heavy Atom Method ◽  
Distorted Trigonal Bipyramidal

The crystal structure of the title compound has been determined by the heavy atom method. The crystals are orthorhombic, space group Pbca, with unit cell dimensions a = 22.795(3) Å, b = 17.518(2) Å, c = 12.396(3) Å, Z = 8; R = 0.0409 for 1527 unique "observed" reflections. The structure is disordered, with each halogen site (X) occupied by 75% Br, 25% I. The molecule consists of two X2(tmen)In units (tmen = N,N,N′,N′-tetramethylethanediamine) with distorted trigonal bipyramidal geometry, joined by an In—In bond 2.775(2) Å in length.

Crystal and molecular structure of diorganoammonium oxalatotrimethylstannate, [R2NH2][Me3Sn(C2O4)] (R=i-Bu, cyclohexyl)

2011 ◽  
Vol 34 (5-6) ◽  
pp. 127-130 ◽  
Author(s):  
Yaya Sow ◽  
Libasse Diop ◽  
Kieran C. Molloy ◽  
Gabrielle Kociok-Köhn
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonds ◽  
Diffraction Study ◽  
Crystal And Molecular Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Trans Complex ◽  
A Chain ◽  
Distorted Trigonal Bipyramidal

Abstract The title compounds [R2NH2][C2O4SnMe3](R=i-Bu, Cy), in which tin atoms adopt a distorted trigonal bipyramidal configuration, have been prepared and submitted to an X-ray diffraction study. These compounds have been obtained from the reaction of (Cy2NH2)2C2O4·H2O or (i-Bu2NH2)2C2O4 with SnMe3Cl. In both [R2NH2][C2O4SnMe3] compounds, the trans complex has an almost regular trigonal bipyramidal geometry around the tin atom. The SnMe3 residues are connected as a chain with bridging oxalate anions in a trans-SnC3O2 framework, the oxygen atoms being in axial positions. The cations connect linear adjacent chains through NH…O hydrogen bonds giving layered structures.

Chloridobis(1,10-phenanthroline-κ2 N,N′)copper(I) hexahydrate

2007 ◽  
Vol 63 (3) ◽  
pp. m826-m828 ◽  
Author(s):  
H. Zhong ◽  
X.-R. Zeng ◽  
X.-M. Yang ◽  
Q.-Y. Luo ◽  
S.-Z. Xiao
Keyword(s):  
Three Dimensional ◽  
Water Molecules ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Rotation Axes ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Cl Atom ◽  
Phenanthroline Ligands ◽  
Distorted Trigonal Bipyramidal

The CuI atom in the title complex, [CuCl(C12H8N2)2]·6H2O, exists in a distorted trigonal-bipyramidal coordination geometry defined by one Cl atom and four N atoms of two 1,10-phenanthroline ligands. In the crystal structure, molecules are linked into a three-dimensional framework by O—H...O hydrogen bonds and π–π stacking interactions. Four water molecules lie on crystallographic twofold rotation axes.

scholarly journals catena-Poly[[trimethyltin(IV)]-μ-methylphenylphosphinato-κ2O:O′]

IUCrData ◽  
2017 ◽  
Vol 2 (10) ◽  
Author(s):  
Chunhua Fu ◽  
Rufen Zhang ◽  
Shaoliang Zhang
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Title Compound ◽  
Sodium Ethoxide ◽  
Chain Structure ◽  
Polymeric Chain ◽  
One Dimensional ◽  
Trigonal Bipyramidal ◽  
Trimethyltin Chloride ◽  
Distorted Trigonal Bipyramidal

A new trimethyltin(IV) coordination polymer, [Sn(CH3)3(C7H8O2P)], has been prepared by treatment of methylphenylphosphinic acid and trimethyltin chloride with sodium ethoxide in methanol. In the solid state, the title compound adopts an infinite one-dimensional polymeric chain structure with each SnIVatom adopting a distorted trigonal–bipyramidal geometry.

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