Sarcophaginates regular

Thus, apart from the expected [Co(diCLsar)]Cl3 complex, the nitrosation of [Co(diAMsar)]3+ diaminosarcophaginate yielded four regular sarcophaginates and four contracted absar ligand complexes [101]. 

The copper and nickel(II) complexes of penta-, hexa-, and hepta-N-methylated sarcophaginate ligands showed tetradentate coordination of the metal ions, unlike the hexadentate coordination in regular sarcophaginates [113-115]. Exhaustive methylation of free sar ligand produced the highly lipophilic, hexatertiary base hexamethyl-sarcophagine [115]. 

The capping of N3S3-semiclathrochelate [Co(ten)]3+ cation via a template-assisted mixed aldehyde (formaldehyde/propanal) condensation (Scheme 47) made it possible to obtain NsSs-sarcophaginates with both regular and contracted cavities in fairly high yield, as well as to isolate the corresponding free ligands [124]. 

The redox potentials of 0x0-, amide-, and amidine-functionalized cobalt(III) sarcophaginates with deprotonated coordinated amino groups are shifted to negative potentials relative to regular cobalt(III) sarcophaginates (Table 48) [123, 133, 134]. The... 

When immobilized on polymer surfaces, cage complexes may be utilized for modifications of electrodes. The increase in the electron-transfer rate on such surfaces is governed by two factors a high rate of electron transfer in cobalt clathrochelates and the regular disposition of these complexes on the surface. The properties of immobilized macrobicyclic complexes have been considered in Refs. 94, 410, and 411. Cyclic voltammetry has been used to characterize the incorporation of a range of structurally different d-metal sarcophaginates and sepulchrates into Nafion polymer [412]. 

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