Polymer-like Structures of LiSCN, NaSCN, KSCN, RbSCN, and CsSCN Complexes with an Armed Monoaza-15-crown-5 Ether Bearing a 3‘,5‘-Difluoro-4‘-hydroxybenzyl Group

Autor:	Chizuko Okazaki, Kinuko Ogura, Jerald S. Bradshaw, Sadatoshi Akabori, Yoichi Habata, Xian X. Zhang
Rok vydání:	2007
Předmět:	Hydrogen bond Ligand Chemistry Inorganic chemistry chemistry.chemical_element Ether Fluorine-19 NMR Alkali metal Inorganic Chemistry chemistry.chemical_compound 15-Crown-5 Polymer chemistry Fluorine Titration Physical and Theoretical Chemistry
Zdroj:	Inorganic Chemistry. 46:8264-8270
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic7011606
Popis:	Structures of LiSCN, NaSCN, KSCN, RbSCN, and CsSCN complexes with 3',5'-difluoro-4'-hydroxybenzyl-armed monoaza-15-crown-5 ether (5) were investigated. The Li+ and Na+ complexes are (1:1)n polymer-like complexes bridged by hydrogen bonding. On the other hand, the K+, Rb+, and Cs+ complexes are polymer-like complexes bridged by the fluorine atoms of the side arms. The titration calorimetry and 19F NMR titration experiments suggest that one or both fluorine atoms along with the oxygen atom of the phenolic OH group coordinate to the alkali metal ions incorporated in the crown part of a second armed ligand to give polymer-like complexes in solution. The FAB-MS data indicated that larger alkali metal ions form more stable polymer-like complexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86b6121cee2aaf24cfb3d4067945178a https://doi.org/10.1021/ic7011606 Zobrazit plný text záznamu