The preparation and characterization of tin(IV) complexes of 2-quinolinecarboxaldehyde Schiff bases of S-methyl- and S-benzyldithiocarbazates and the X-ray crystal and molecular structures of the 2-quinolinecarboxaldehyde Schiff base of S-benzyldithiocarbazate (Hqaldsbz) and its tin(IV) complex [Sn(qaldsbz)I3]

Polyhedron ◽  
2004 ◽  
Vol 23 (15) ◽  
pp. 2405-2412 ◽  
Author(s):  
Mohammad Akbar Ali ◽  
Aminul H. Mirza ◽  
Malai Haniti S.A. Hamid ◽  
Fatriah Hj Bujang ◽  
Paul V. Bernhardt
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Molecular Structures ◽  
X Ray ◽  
Crystal And Molecular Structures

Darstellung und Charakterisierung von Spezies der Zusammensetzung η5-C5H5Cr(NO)2SR (R = C6H5, C6F5, t–C4H9) und [η5-C5H5CrNO]2(ER)2 (E = O, S, Se, Te, R = Alkyl, Aryl); Röntgenstrukturanalysen von [η5-C5H5(NO)Cr(μ-SeC6H5)2Cr(NO)-η5-C5H5] und [η5-C5H5(NO)Cr(μ-Se-n-C4H9)(μ-OH)Cr(NO)-η5-C5H5] / Synthesis and Characterization of Species of Composition η5-C5H5Cr(NO)2SR (R = C6H5, C6F5, t-C4H9) and [η5-C5H5CrNO]2(ER)2 (E = O, S, Se, Te, R = Alkyl, Aryl); Röntgenstrukturanalysen von [η5-C5H5(NO)Cr(μ-SeC6H5)2Cr(NO)-η5-C5H5] and [η5-C5H5(NO)Cr(μ-Se-n-C4H9)(μ-OH)Cr(NO)-η5-C5H5]

1982 ◽  
Vol 37 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Johannes Rott ◽  
Ernst Guggolz ◽  
Albert Rettenmeier ◽  
Manfred L. Ziegler
Keyword(s):  
Mass Spectra ◽  
Membered Ring ◽  
Molecular Structures ◽  
Binuclear Complexes ◽  
Alkyl Aryl ◽  
X Ray ◽  
H Nmr ◽  
Crystal And Molecular Structures ◽  
Nmr Methods

The title compounds have been synthesized and characterized by elemental analysis, IR and 1H NMR methods and mass spectra. The crystal and molecular structures of the binuclear complexes [η-C5H5(NO)Cr(μ-SeC6H5)2Cr(NO)-η5-C5H5] and [η5-C5H5(NO)Crμ-Se-n-C4H9)(μ-OH)Cr(NO)-μ5-C5H5] have been determined by X-ray structure analysis. The latter is shown to have a four-membered ring consisting of two chromium atoms, one selenium, and one oxygen atom.

scholarly journals Transition metal complexes with pyrazole based ligands, part 27: Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole

2007 ◽  
Vol 72 (12) ◽  
pp. 1281-1293 ◽  
Author(s):  
Vukadin Leovac ◽  
Zoran Tomic ◽  
Katalin Mészáros-Szécsényi ◽  
Ljiljana Jovanovic ◽  
Milan Joksovic
Keyword(s):  
Thermal Decomposition ◽  
Solid State ◽  
Transition Metal Complexes ◽  
Thermal Characterization ◽  
Molecular Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal And Molecular Structures ◽  
Vis Spectroscopy

The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)2X2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)2Br2] by the quasi-isothermal technique.

Synthesis and structural characterization of m-terphenyl Schiff base ligands and their aluminum complexes

2004 ◽  
Vol 82 (9) ◽  
pp. 1346-1352 ◽  
Author(s):  
Diane A Dickie ◽  
Hanifa Jalali ◽  
Rahul G Samant ◽  
Michael C Jennings ◽  
Jason AC Clyburne
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Structural Characterization ◽  
Condensation Reaction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
X Ray Crystallography ◽  
Aluminum Complexes

2,4,6-Triphenylbenzaldehyde 1 undergoes a condensation reaction with 2-aminophenol to give N-(2′,4′,6′-triphenylbenzylidene)-2-iminophenol (TPIP) 2. The imine 2 can be reduced with NaBH4 in ethanol to form N-(2′,4′,6′-triphenylbenzyl)-2-aminophenol (TPAP) 3. Addition of trimethylaluminum to 2 or 3 results in the formation of the complexes TPIP-AlMe2·AlMe3 (4) or TPAP-AlMe2 (5). Compounds 2, 3, and 4 have been crystallographically characterized.Key words: N,O ligands, aluminum, m-terphenyl, Schiff bases, X-ray crystallography.

Structural and spectroscopic characterization of isotypic sodium, rubidium and cesium acesulfamates

2015 ◽  
Vol 70 (7) ◽  
pp. 491-496 ◽  
Author(s):  
Oscar E. Piro ◽  
Gustavo A. Echeverría ◽  
Eduardo E. Castellano ◽  
Beatriz S. Parajón-Costa ◽  
Enrique J. Baran
Keyword(s):  
Aqueous Solutions ◽  
Single Crystal ◽  
Potassium Salt ◽  
Spectroscopic Characterization ◽  
Molecular Structures ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal And Molecular Structures

AbstractThree new acesulfamate salts, NaC4H4NO4S, RbC4H4NO4S and CsC4H4NO4S, were prepared by reactions in aqueous solutions and thoroughly characterized. Their crystal and molecular structures were determined by single crystal X-ray diffraction methods. They crystallize in the monoclinic space group P21/a with a = 7.2518(2), b = 8.9414(4), c = 10.5929(4) Å, β = 99.951(3)°, V = 676.52(4) Å3 for the Na salt; a = 7.4663(3), b = 9.6962(4), c = 10.4391(4) Å, β = 95.150(3)°, V = 752.68(5) Å3 for the Rb salt and a = 7.5995(4), b = 9.9439(4), c = 10.8814(6) Å, β = 91.298(5)°, V = 822.08(7) Å3 for the Cs salt, and Z = 4 molecules per unit cell. The three compounds are isotypic to each other and to the previously reported potassium salt. The metal ions are in irregular polyhedral coordination with six neighboring acesulfamate anions through their nitrogen and carbonyl and sulfoxide oxygen atoms. The FTIR spectra of the compounds were also recorded and are briefly discussed.

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