Macrobicyclic dihydrazonates

In the case of cyclohexanedione-1.2-dihydrazone, the macrobicyclic dihydrazonate formation proceeded on the template Fe-+ ion more... 

As seen from X-ray diffraction data, the Ne-coordination arrangement of an encapsulated iron(II) ion in macrobicyclic tris-cyclohexanedione-l,2-dihydrazonate [Fe(cxcage)]2+ cation is intermediate between a TAP and a TP ( = 22.1°) and results from superimposition of the ligand field effects and steric constraints... 

The CTB in the UV-vis spectra of nonmacrocyclic iron(II) oximehydrazonates and their semi- and clathrochelate derivatives (vmax 19 600-20 600 cm-i) occupies an intermediate position between those of macrobicyclic iron(II) tris-dimethylglyoximates and those of clathrochelate complexes with dihydrazone ihz ligand. A CTB maxima in the spectra of clathrochelate complexes are substantially red shifted compared with that in the spectra of the initial semi-clathrochelates [185-187]. 

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See also in sourсe #XX -- [ , , ]

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