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Carbon Dioxide Fixation with Dialkyltellurium(IV) Dihydroxides
Author(s) -
Beckmann Jens,
Bolsinger Jens,
Duthie Andrew
Publication year - 2010
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.200900432
Subject(s) - carbon fixation , chemistry , dissociation (chemistry) , carbonate , aqueous solution , carbon dioxide , coordination sphere , crystallography , tellurium , inorganic chemistry , stereochemistry , crystal structure , organic chemistry
Aqueous solutions of Me 2 Te(OH) 2 and (CH 2 ) 4 Te(OH) 2 readily absorb carbon dioxide giving rise to the formation of the dialkyltelluroxane carbonates (Me 2 TeOTeMe 2 CO 3 ) n ( 1 ) and HO(CH 2 ) 4 TeOTe(CH 2 ) 4 CO 3 Te(CH 2 ) 4 OH·2H 2 O ( 2 ·2H 2 O), which were characterised by 13 C MAS and 125 Te MAS NMR spectroscopy as well as X‐ray crystallography. The spatial arrangement of the tellurium atoms is defined by C 2 O 2 donor sets in the primary coordination sphere and one or two secondary Te···O contacts, which involve coordination of the carbonate moieties. In turn, the different Te–O coordination modes render a lack of symmetry to the carbonate moieties, which show significantly different C–O bond lengths, an important feature when contemplating the C–O bond activation in carbonates. The structural and spectroscopic parameters of 1 and 2 are discussed in comparison with other heavy p ‐block element carbonates. In solution, electrolytic dissociation of 1 and 2 takes place.