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Hydrazone‐Based Ligand with Pyrrolidine Donor and Its Molybdenum(VI) Complex: Synthesis, Structure, and Reactivity
Author(s) -
Nica Simona,
Buchholz Axel,
Görls Helmar,
Plass Winfried
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000440
Subject(s) - chemistry , salicylaldehyde , pyrrolidine , hydrazone , ligand (biochemistry) , hydrazide , schiff base , medicinal chemistry , crystal structure , amidine , molybdenum , stereochemistry , reactivity (psychology) , polymer chemistry , organic chemistry , medicine , biochemistry , receptor , alternative medicine , pathology
The Schiff‐base condensation of salicylaldehyde and 4‐aminobutanehydrazide hydrochloride leads to the hydrazone‐based ligand H 2 salhyab containing an amino side chain. The reaction of H 2 salhyab ⋅ HCl with bis(acetylacetonato)dioxidomolybdenum leads to the formation of [MoO 2 (salhycab)(MeOH)] (H 2 salhycab=2‐((pyrrolidine‐2‐ylidenehydrazineylidene)methyl)phenol), whereby the amino side chain reacted with the hydrazide carbonyl group to form a cyclic amidine with a pyrrolidine ring leading a new type of tridentate hydrazone ligand with [NNO] donor set. X‐ray crystallography revealed the additional coordination of a methanol molecule at the molybdenum(VI) center which leads to the formation of hydrogen‐bonded dimers of the neutral complex in the crystal structure. The complex [MoO 2 (salhycab)(MeOH)] was found to be an efficient catalyst for the peroxidic oxidation of phenyl methyl sulfide.