TY - JOUR
T1 - Lower rim 2-methylthioethoxy substituted calix[4]arenes as shape selective complexants for mercury and silver
AU - Yordanov, Alexander T.
AU - Whittlesey, Bruce R.
AU - Roundhill, D. Max
N1 - Funding Information:
We thank the U.S. Army Research Office for support of this work.
PY - 1998
Y1 - 1998
N2 - The compounds 5, 11, 17, 23-tert-butyl-25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 1 and 25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 2 have been synthesized from their corresponding 2-bromoethoxy derivatives. The crystal structure of 2 shows that the molecule has a flattened cone conformation. For the extraction of heavy metals from water into chloroform 1 and 2 show similar effectiveness for SnCI-3, PdCI2-4, PtCI2-4 and AuCI-4, but for Hg2+ and Ag+, 2 is a better extractant than 1. This difference is discussed in terms of the relative hydrophobicities and structures of the two compounds.
AB - The compounds 5, 11, 17, 23-tert-butyl-25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 1 and 25, 26, 27, 28-(2-methylthioethoxy)calix[4]arene 2 have been synthesized from their corresponding 2-bromoethoxy derivatives. The crystal structure of 2 shows that the molecule has a flattened cone conformation. For the extraction of heavy metals from water into chloroform 1 and 2 show similar effectiveness for SnCI-3, PdCI2-4, PtCI2-4 and AuCI-4, but for Hg2+ and Ag+, 2 is a better extractant than 1. This difference is discussed in terms of the relative hydrophobicities and structures of the two compounds.
KW - Calix[4]arene
KW - Mercury
KW - Silver
UR - http://www.scopus.com/inward/record.url?scp=11644281381&partnerID=8YFLogxK
U2 - 10.1080/10610279808034961
DO - 10.1080/10610279808034961
M3 - Article
AN - SCOPUS:11644281381
SN - 1061-0278
VL - 9
SP - 13
EP - 15
JO - Supramolecular Chemistry
JF - Supramolecular Chemistry
IS - 1
ER -