engleski

Carbohydrazides and dihydrazones: the aspects of their solid-state and solution chemistry

The hydrazone R1R2C=N–NHR3 functional group is a universal building block, incorporated in a wide spectrum of organic and metal-organic compounds. Its stability, acid-base behaviour, and structural modularity allow hydrazones to act as molecular switches, sensors, and/or as anion receptors. On the other hand, the E/Z isomerization of hydrazones makes them suitable for the development of metal-organic architectures with stimuli-responsive properties. Within this large family of compounds especially intriguing are those derived from carbohydrazides and dihydrazides, as they allow the development of unsymmetrical or symmetrical derivatives. This in return offers a fruitful platform for the manipulation of the molecular geometry and conformation (syn or anti) of the material in a controllable way. In this talk main synthetic approaches towards symmetrical and unsymmetrical carbohydrazides and dihydrazones will be considered. Selected examples of symmetrical and unsymmetrical carbohydrazides as well as dihydrazones will be given and discussed in terms of their solid- state and solution behaviour.

carbohydrazides ; dihydrazones ; dioxomolybdenum(VI) complexes ; hybrid hexamolybdate salts ; NMR spectroscopy

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