STUDIES OF ICE NUCLEATION OF METAL COMPLEXES OF β-DIKE TONES AND ITS CRYSTALLINE COMPOUNDS OF UREA

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<正> The cloud seeding of metal complexes of β-diketones has been known for many years. However the ice nucleation of the title compounds of Fe (Ⅲ), Co (Ⅲ), Cr(Ⅲ) Al(Ⅲ) has not yet been published. The general structural formula of these compounds are
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