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Fixierung von CO 2 durch Pyrazolylborat‐Zink‐Hydroxid‐Komplexe
Author(s) -
Peter Andrea,
Vahrenkamp Heinrich
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500196
Subject(s) - chemistry , zinc , alcohol , medicinal chemistry , hydroxide , ethanol , inorganic chemistry , nuclear chemistry , polymer chemistry , organic chemistry
Fixation of CO 2 by Pyrazolylborate‐Zinc‐Hydroxide Complexes The reversible uptake of CO 2 by Tp*Zn‐OH complexes in alcoholic solutions with formation of Tp*Zn‐alkylcarbonate complexes was subjected to a comparative study. Its rate and the stability of its products depend on (1) the substituents in the 3‐positions of the pyrazolylborates (phenyl ≈ 3‐pyridyl ≫ t‐butyl), (2) the alcohol (CH 3 OH > C 2 H 5 OH). Traces of water seem to be essential for the formation of the Tp*Zn‐alkylcarbonates. In solution these are only stable in the presence of CO 2 . Two new alkylcarbonate complexes were obtained and characterized by structure determinations.