Abstract: | Genetal methods are described for the preparation of metalloatrane-3,7,10-triones, containing an atom of a ter-, quarter-, or quinquevalent metal (mainly in the form of hydrates). Seven intramolecular compounds of this type (with M = NdIII, ClTiIV, ClZrIV, CeIII, HOPbIV, HOMnIV, HOOUVI), have been prepared, of which only two (with M = NdIII and HOOUVI) were known previously. Compounds with the composition N (CH2COO)3M · mN (CH2COO)3 · nH2O with M = NdIII, ThIV, COIII and NiIII (m=1) and with M = Sb (m=3 and 4) have also been obtained.For part XVIII, see 1]. |