Komplexy aminoalkylfosfinoxidů

Abstract

Title: Comlpexes of aminoalkylphosphineoxides Author: Bence Mészáros Department: Department of Inorganic Chemistry, Faculty of Science UK Supervisor: doc. RNDr. Vojt ch Kubí ek, Ph.D. Supervisor's e-mail address: kubicek@natur.cuni.cz Three selected aminoalkylphosphine oxides were synthesized: Aminomethyl(diphenyl)phosphine oxide, N-piperidylmethyl(diphenyl)phosphine oxide, N,N-diethylaminomethylbis(hydroxomethyl)phosphine oxide. All prepared substances were characterized by NMR spectroscopy and mass spectrometry. The aminomethyl(diphenyl)phosphine oxide and N-piperidylmethyl(diphenyl)phosphine oxide were obtained in the solid state as single crystals and their structure was determined by X-ray analysis. Acid-base and complexing properties of the studied compounds were studied by potentiometric titration and NMR titration. Protonation constants of all three compounds were obtained, stability constants were not determined because of the low solubility of the complexes in water or low stability of the complexes. The structure of the aminomethyl(diphenyl)phosphine oxide complex with Cu2+ was determined by X-ray analysis. Keywords: complexes, organophosphorus synthesis, phosphine oxides, acid-base and complexation properties

Název: Komplexy aminoalkylfosfinoxid ešitel: Bence Mészáros Ústav: Katedra anorganické chemie, P írodov decká fakulta UK Školitel: doc. RNDr. Vojt ch Kubí ek, Ph.D. E-mail školitele: kubicek@natur.cuni.cz Byly p ipraveny t i vybrané aminoalkylfosfinoxidy: Aminomethyl(difenyl)fosfinoxid, N- piperidylmethyl(difenyl)fosfinoxid, N,N-diethylaminomethylbis(hydroxomethyl)fosfinoxid. Všechny p ipravené látky byly charakterizovány pomocí NMR spektroskopie a hmotnostní spektrometrie. Aminomethyl(difenyl)fosfinoxid a N-piperidyl(difenyl)fosfinoxid byly získány v pevném stavu ve form monokrystalu a byla stanovena jejich struktura pomocí rentgenové strukturní analýzy. Dále byly studovány jejich acidobazické a komplexotvorné vlastnosti pomocí potenciometrické titrace a NMR titrace. Byly ur ené protoniza ní konstanty všech t í slou enin. Konstanty stability komplex nebylo možné stanovit kv li nízké rozpustnosti komplex ve vod nebo jejich nízké stabilit . Byla získána struktura komplexu aminomethyl(difenyl)fosfinoxidu s ionty Cu2+ pomocí rentgenové strukturní analýzy. Klí ová slova: komplexy, organofosforová syntéza, fosfinoxidy, acidobazické a koordina ní vlastnosti