Inclusion compounds of the copper(ii) and zinc(ii) complexes with cyclam in cucurbit[8]uril: synthesis and structure

Abstract

Inclusion compounds of the macrocyclic cavitand cucurbit[8]uril (CB[8], С 48 H 48 N 32 O 16 ) with the copper(II) and zinc(II) complexes with the tetraazamacrocyclic ligand cyclam, {[Cu(cyclam)(H 2 O) 2 ]@CB[8]}Cl 2 •18H 2 O (1) and {[Zn(cyclam)]@CB[8]}Cl 2 •13H 2 O (2), were synthesized. The compounds were characterized by X ray diffraction analysis, electrospray mass spectrometry, IR spectroscopy, and elemental analysis. The 1 H and 13 C NMR method revealed only one trans isomer of the zinc(II) complex with cyclam in an aqueous solution of inclusion compound 2.

Quantum Chemical Challenges for the Binding of Simple Alkanes to Supramolecular Hosts

“…Such variable orientations are often seen in encapsulation of metal complexes to CB. For instance, ferrocene 45 and copper cyclam complexes 46,47 bind to CB- [7] and CB- [8] in both orientations. However due to symmetry (C 3v ) both methane and neopentane bind only in one orientation (Figure S1, Supporting Information).…”

Synthesis, characterization and biological study of new dinuclear zinc(II) and nickel(II) octaaza macrocyclic complexes

“…In recent years, interest in macrocyclic polyamines has been on the increase as a result of their attractive structures and their possible applications in many different fields [1][2][3]. The reason for that is their possibility to react or coordinate with many different metal ions as well as organic molecules via by nitrogen atoms [4][5][6][7].…”