1987
DOI: 10.1002/zaac.19875541128
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Azomethin‐ und Oximgruppierungen als Bausteine von chelatbildenden Sulfonamiden und ihr differenzierter Einfluß auf die Struktur von Komplexen der 3d‐Elemente

Abstract: Potentiell zweizählige azomethin‐ bzw. oximsubstituierte Sulfonamide mit dem Donatoratomsatz Nsp2\documentclass{article}\pagestyle{empty}\begin{document}$ \mathop {\rm N}\limits^ \ominus $\end{document}N (SIH, SAH, TABOH, OASH, DH) bilden mit Cobalt(II), Nickel(II) und Kupfer(II) neutrale, oxidationsstabile 1,2‐Komplexe. Die Struktur der Cobalt(II)‐ und Nickel(II)‐ Verbindungen hängt deutlich vom Liganden ab. Die Oxime ergeben durchweg planare Low‐spin‐Komplexe, die Azomethine dagegen tetraedrische High‐s… Show more

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Cited by 15 publications
(3 citation statements)
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“…Figure a shows the S 2p XPS spectra of [P 66614 ]­[Benzim] after exposure to SO 2 . One S 2p 3/2 photoelectron peak is observed at 167.8 eV; this peak is indicative of the sulfur binding on to the benzimidazolide ring at the nitrogen position to give R-N-SO 2 – , which suggests, as expected, that the SO 2 is competing for the same site as the CO 2 is known to bind to. In comparison, [P 66614 ]­[Benzim] after 11 absorption (14% CO 2 , 0.2% SO 2 in Ar, 22 °C) and desorption cycles (Ar, 120 °C) is given in Figure b.…”
Section: Resultssupporting
confidence: 61%
“…Figure a shows the S 2p XPS spectra of [P 66614 ]­[Benzim] after exposure to SO 2 . One S 2p 3/2 photoelectron peak is observed at 167.8 eV; this peak is indicative of the sulfur binding on to the benzimidazolide ring at the nitrogen position to give R-N-SO 2 – , which suggests, as expected, that the SO 2 is competing for the same site as the CO 2 is known to bind to. In comparison, [P 66614 ]­[Benzim] after 11 absorption (14% CO 2 , 0.2% SO 2 in Ar, 22 °C) and desorption cycles (Ar, 120 °C) is given in Figure b.…”
Section: Resultssupporting
confidence: 61%
“…32 Arylsulfonyl derivatives of 2-aminobenzophenone oxime (V in Fig. 1) were suggested 33 as alternatives to the commercial phenolic oxime reagents, and subsequently shown 34 to be strong extractants for Cu(II). Sulfonyl-thiosemicarbazides, 35 2-aminophenols, 36 aminothiadiazoles, 37 pyridines and other N-heterocycles, 38 and hydrazines 39 have all been claimed in patents to extract base metal cations, but in most cases the coordination chemistry involved has not been described.…”
Section: Introductionmentioning
confidence: 99%
“…No speciation is observed in the unreacted copolymer materials indicating that the N sites in the polymer bearing either proton or TSEM substituents have similar N(1s) binding energies. The lower energy of the three signals in the reacted polymer might correspond to an immine structure (typical N(1s) binding energies for immines are in the range 398-399 eV, 26,27 ) but the nature of the higher binding energy feature is less clear. This signal could arise from tetrabutylammonium cation (N(1s) binding energy for [NBu 4 ] þ has been measured at 403.6 eV, 28 ) either adsorbed onto, or incorporated into, the polymer film.…”
Section: Xps Of Reacted Polymer Filmsmentioning
confidence: 99%