Study of IR spectra of thiacalix[4]arene with carboxyl and adamantyl groups Victor Furer, Ludmila Potapova, Ivan Vatsouro, Vladimir Kovalev and Elvira Shokova E3S Web Conf., 274 (2021) 04002 Published online: 18 June 2021 DOI: 10.1051/e3sconf/202127404002