Ein Nachweis für Chinasäure

  • R Neu
  • Published 2004 in Naturwissenschaften

Abstract

A l t h o u g h the p repa ra t ion of a ce ty l ace tona t e s of z i rconium, h a f n i u m and thor iuml) ,2) , ~) h a s been repor ted , t he p repa ra t ion of t h e cor respond ing t i t a n i u m c o m p o u n d [Ti(C~HTO~)~] , h a s no t been repor ted so far, p r e s u m a b l y because t he m a x i m u m co-ord ina t ion n u m b e r for t i t a n i u m is 6. YOUNG a n d WE~DEN 4) ob ta ined a c o m p o u n d h a v i n g t he compos i t ion TiC12(C~HTO~) 2, w h e n t i t a n i u m (IV) chloride reac ted wi th ace ty l ace tone in a n h y d r o u s acetic acid. T h e y also observed t h a t th i s c o m p o u n d was hyd ro l y sed i m m e d i a t e l y b y water . Since t h e r e q u i r e m e n t of t he co-ord ina t ion n u m b e r 6 is l ikely to be m e t in a ful ly s u b s t i t u t e d b i d e n t a t e complex of t r i va l en t t i t a n i u m , i t was decided to inves t iga te t h e ac t ion of ace ty lace tone on t i t a n i u m (IH) chloride. The t i t a n i u m (III) chloride used~), 7) was of ve ry h igh p u r i t y a n d was s u s p e n d e d in a m i x t u r e of an excess of d ry benzene and a ca lcu la ted q u a n t i t y of ace ty lace tone . Dry a m m o n i a gas was passed t h r o u g h t h e suspens ion un t i l t h e e x o t h e r m i c reac t ion h a d subs ided comple te ly :

DOI: 10.1007/BF00622875

Cite this paper

@article{Neu2004EinNF, title={Ein Nachweis f{\"{u}r Chinas{\"a}ure}, author={R Neu}, journal={Naturwissenschaften}, year={2004}, volume={45}, pages={286-286} }