Search results for "Perchlorate"
showing 10 items of 643 documents
Studien zum Vorgang der Wasserstoffübertragung 36 [1] Einfluß von Art und Struktur einiger Leitsalze auf die elektrochemische Spaltung von Diarylsulf…
1975
Tensammetrische Messungen bestatigen, das Tetraalkylammoniumsalze in Methanol mit steigender Kettenlange der Alkylreste und wachsender Konzentration zunehmend starker an der Quecksilberoberflache adsorbiert werden. Polarographie und Zyklovoltammetrie der Diarylsulfone 1–8 in Methanol lassen folgende Schlusse zu: 1 Unabhangig von der Alkylkettenlange der Tetraalkylammoniumsalze werden die Diarylsulfone 1–6 nach einem ECE-Mechanismus gespalten. Bei Verwendung von Alkalileitsalzen sind die genannten Sulfone polarographisch inaktiv. 2 Beim 4-Cyano-diphenylsulfon wird mit Tetramethylammoniumchlorid zyklovoltammetrisch keine Reversibilitat des ersten Elektronen ubergangs beobachtet, wohl aber mit…
UV-Photometrische Analyse kationisch erzeugter Polystyrole, 2. Quantitative Bestimmung von Endgruppen in Polystyrolen, dargestellt mit Acylperchlorat…
1984
Acyl perchlorates generated in styrene without a solvent by acyl chlorides and silver perchlorate gave polystyrenes with covalently bonded acyl groups. In order to gain secured values their number average relative molecular masses (Mn) were determined by different methods. The polystyrenes could be hydrogenated with hydrogen and Raney nickel at room temperature and under atmospheric pressure without attacking the phenolic nuclei. In addition IR data and a UV absorption at 294 nm of the polystyrenes revealed the presence of and olefinic bond, which was also found in a polystyrene obtained by polymerisation with perchloric acid. Also the quantitative evaluation of the hydrogeneation by UV abs…
Towards oxalate-bridged iron(ii), cobalt(ii), nickel(ii) and zinc(ii) complexes through oxotris(oxalato)niobate(v): an open air non-oxidizing synthet…
2018
Four compounds with the formula [M2(dmphen)4(μ-C2O4)](ClO4)2·2dmso [M = Fe (1), Co (2) and Zn (4); dmphen = 2,9-dimethyl-1,10-phenanthroline] and [Ni2(dmphen)4(μ-C2O4)]3[NbO(C2O4)3]2·16H2O (3) have been synthesized using the tris(oxalato)oxoniobate(V) complex anion as the oxalate source, and their structures have been determined by single crystal X-ray diffraction. X-ray quality crystals of highly insoluble oxalate-bridged species were obtained by taking advantage of the slow release of oxalate by the tris(oxalato)oxoniobate(V) complex anion. The structures of 1–4 all contain oxalate-bridged dimetal(II) units with didentate dmphen molecules acting as end-cap ligands; electroneutrality is ac…
Structure and magnetic properties of a linear oximato-bridged tetranuclear copper(II) complex
1998
Abstract The tetranuclear copper(II) complex of formula [Cu2(dmg)(Hdmg)(terpy)]2(ClO4)2 (1) (H2dmg = dimethylglyoxime and terpy = 2,2′:6′,2″-terpyridine) has been synthesized and its crystal structure determined by X-ray diffraction methods. It crystallizes in the triclinic system, space group P(−1), with a = 14.382(3), b = 13.728(3), c = 8.979(2) A, α = 96.99(2), β = 111.85(2), γ = 111.22(3)°, V = 1465.0(9) A3, Z = 1, Dc = 1.607 g cm−3, Mr = 1418.0, F(000) = 719, λ(Mo Kα) = 0.71073 A, μ(Mo Kα) = 16.61 cm−1 and T = 298 K. A total of 4891 reflections were measured over the range 2 ≤ θ ≤ 25° and 4393 of them were unique (I > 2.5σ(I) and used in the structural analysis. The structure of 1 may …
CCDC 1827335: Experimental Crystal Structure Determination
2018
Related Article: Álvaro Martínez-Camarena, Andrea Liberato, Estefanía Delgado-Pinar, Andrés G. Algarra, Javier Pitarch-Jarque, José M. Llinares, M. Ángeles Mañez, Antonio Domenech-Carbó, Manuel G. Basallote, Enrique García-España|2018|Inorg.Chem.|57|10961|doi:10.1021/acs.inorgchem.8b01492
CCDC 709728: Experimental Crystal Structure Determination
2009
Related Article: I.S.Jahro, D.Onggo, Ismunandar, S.I.Rahayu, M.C.Munoz, A.B.Gaspar, M.Seredyuk, P.Gutlich, J.A.Real|2008|Inorg.Chim.Acta|361|4047|doi:10.1016/j.ica.2008.03.122
Chlorido(2,2′-{[2-(1-methyl-1H-imidazol-2-yl-κN 3)imidazolidine-1,3-diyl-κN]bis(methylene)}bis(1-methyl-1H-imidazole-κN 3))copper(II) perchlorate
2019
In the crystal structure of the title complex, [CuCl(C17H24N8)]ClO4, the copper(II) metal exhibits an N4Cl pentacoordinate environment in a distorted square-pyramidal geometry. Coordination to the metal centre occurs through the three 1-methylimidazole N atoms from the pendant groups, one amine N atom from the imidazolidine moiety and one chlorido anion. Intermolecular interactions take place at two of the 1-methyl-imidazole rings in the form of parallel-displaced π–π stacking interactions forming chains parallel to the a axis. Three O atoms of the perchlorate anion are rotationally disordered between two orientations with occupancies of 0.5.
Ferro- and Antiferromagnetic Interactions in Oxalato-Centered Inverse Hexanuclear and Chain Copper(II) Complexes with Pyrazole Derivatives.
2021
Two novel copper(II) complexes of formulas {[Cu(4-Hmpz)4][Cu(4-Hmpz)2(µ3-ox-κ2O1,O2:κO2′:κO1′)(ClO4)2]}n (1) and {[Cu(3,4,5-Htmpz)4]2[Cu(3,4,5-Htmpz)2(µ3-ox-κ2O1,O2:κO2′:κO1′)(H2O)(ClO4)]2[Cu2(3,4,5-Htmpz)4(µ-ox-κ2O1,O2:κ2O2′,O1′)]}(ClO4)4·6H2O (2) have been obtained by using 4-methyl-1H-pyrazole (4-Hmpz) and 3,4,5-trimethyl-1H-pyrazole (3,4,5-Htmpz) as terminal ligands and oxalate (ox) as the polyatomic inverse coordination center. The crystal structure of 1 consists of perchlorate counteranions and cationic copper(II) chains with alternating bis(pyrazole)(µ3-κ2O1,O2:κO2′:κO1′-oxalato)copper(II) and tetrakis(pyrazole)copper(II) fragments. The crystal structure of 2 is made up of perchlorat…
Crystal structure of bis-(2-methyl-1H-imidazole-κN (3))(meso-tetra-p-tol-ylporphyrinato-κ(4) N)iron(III) perchlorate tetra-hydro-furan sesquisolvate.
2016
The crystal structure of the six-coordinate, highly ruffled, ferric porphyrinate bis(2-methylimidazole)[meso-tetrakis(p-tolyl)porphyrinato]iron(III) perchlorate is reported.
CCDC 882806: Experimental Crystal Structure Determination
2013
Related Article: F.Reuter,E.Rentschler|2013|Polyhedron|52|788|doi:10.1016/j.poly.2012.07.050