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Complexation studies of some newly synthesized precursors for substituted dibenzo and dibenzodiaza crown ethers
Author(s) -
Çakir Ümit,
Uǧraş H. Ibrahim,
Temel Hamdi,
Topal Giray
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.13417
Subject(s) - chemistry , conductometry , yield (engineering) , crown ether , ether , polymer chemistry , nuclear chemistry , medicinal chemistry , stability constants of complexes , copper , inorganic chemistry , ion , organic chemistry , materials science , metallurgy
This study represents the synthesis of dibenzo and dibenzodiaza crown ether precursors with various functional groups in good yield by employing four different methods using polar protic and aprotic solvents with high boiling points. Also the complexation abilities of all synthesized ligands with Cu 2+ , Zn 2+ , and Ag + were studied by conductometry; thus the conductometric behavior of Cu(NO 3 ) 2 , ZnCI 2 , and AgNO 3 in 80% dioxane–water mixture was investigated in the presence of these ligands. The order of formation constant for complexes of the ligands with Cu 2+ , Zn 2+ , and Ag + ions was found to be: Cu 2+ > Zn 2+ > Ag + for the ligands of VI , VII , XI , and XII ; Cu 2+ > Ag + > Zn 2+ for the ligands of III and VIII ; and Zn 2+ > Cu 2+ > Ag + for the ligands of I , II , IV , V , IX , and X . © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2497–2501, 2004