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Figure 1 Synthesis and numbering scheme of ortho-hydro­quinone-based bis­(pyrazol-1-yl)methane ligand (I). (a) (i) NaH, THF, 30 min; (ii) SOCl2, THF, 5 min; (iii) 3,4-dihy­droxy­benzaldehyde, pyridine, THF, reflux, over night.

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ISSN: 2056-9890
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