¹¹³Cd as a Probe in NMR Studies of Allosteric Host-Guest-Ligand Complexes of Porphyrin Cage Compounds.

ABSTRACT: Cadmium porphyrin cage compounds Cd1 and ¹¹³ Cd1 have been synthesized from the free base porphyrin cage derivative H₂1 and Cd(OAc)₂ ⋅ 2 H₂O or ¹¹³Cd(OAc)₂ ⋅ 2 H₂O, respectively. The compounds form allosteric complexes with the positively charged guests N,N'-dimethylimidazolium hexafluorophosphate (DMI) and N,N'-dimethylviologen dihexafluorophosphate (Me₂V), which bind in the cavity of the cage, and tbupy, which coordinates as an axial ligand to the outside of the cage. In the presence of tbupy, the binding of DMI in Cd1 is enhanced by a factor of ∼31, while the presence of DMI or Me₂V in the cav

SUBMITTER: Bruekers JPJ 

PROVIDER: S-EPMC9324901 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature