Oxomolybdenum(VI) and (V) complexes with 6-methyl-4-hydroxypyrimidinyl hydrazones

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Dioxomolybdenum(VI) complexes [MoO2(L)H2O] and oxomolybdenum(V) complexes [Mo2O3(LH)2Cl2] (where LH2 = hydrazones derived from 6-methyl-4-hydroxy-2-hydrazinopyrimidine with salicylaldehyde, 5-methyl-, 5-chloro-, 5-bromo-, 3-methoxy-salilcylaldehyde, or 2-hydroxy-1-naphthaldehyde) have been prepared and characterised by spectroscopic and physico-chemical methods. The MoVI complexes are diamagnetic octahedral structures, whilst the MoV complexes are paramagnetic and probably dimeric, via oxobridging.

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