Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 39901-94-5, is researched, Molecular C6H5Cl2NO, about Porphyrazines Peripherally Functionalized with Hybrid Ligands as Molecular Scaffolds for Bimetallic Metal-Ion Coordination, the main research direction is transition metal picolinamidoporphyrazine derivative complex preparation; crystal structure transition metal salicylideniminopicolinamidoporphyrazinato dinuclear complex; copper manganese salicylideniminopicolinamidoporphyrazinato dinuclear complex preparation structure; vanadyl copper salicylideniminopicolinamidoporphyrazinato dinuclear complex preparation structure; picolinamidoporphyrazine derivative preparation complexation transition metal; exchange coupling mechanism transition metal salicylideniminopicolinamidoporphyrazinato dinuclear complex; antiferromagnetic exchange copper vanadyl salicylideniminopicolinamidoporphyrazinato dinuclear complex.SDS of cas: 39901-94-5.
Reported are the synthesis and phys. characterization of a new family of peripherally functionalized porphyrazine (pz) compounds I (denoted [M1, M2]; M1 = MnCl, VO, Cu; M2 = Cu) where metal ion M1 is incorporated into the pz core and metal ion M2 is bound to a salicylidene/picolinamide “”hybrid”” chelate built onto two nitrogen atoms attached to the pz periphery. The complexes [MnCl, Cu], [VO, Cu], and [Cu, Cu] have been prepared and crystal structures show [MnCl, Cu] and [VO, Cu] to be isostructural. These complexes have been subjected to ESR and temperature-dependent magnetic susceptibility measurements. The variation of the ligand-mediated exchange splittings (Δ) in these complexes is striking: Δ/kB values for [MnCl, Cu] and [VO, Cu] are 22 and 40 K, resp., while Δ/kB for [Cu, Cu] is only 1 K. These coupling results are explained in terms of the relative orientation of the M1 and M2 orbitals and reflect the fact that the ligand set of M2 in the periphery is rotated in-plane by 45° relative to the effectively coplanar pz ligand set of M1. The exchange couplings are essentially the same as those determined for the Schiff base porphyrazines (pzs). Thus, the hybrid ligand has eliminated the dimerization found to occur when Cu(II) is bound to the periphery of bis(picolinamido) pzs and has created a more robust ligand system than the Schiff base pzs while retaining the ability they show to promote spin coupling between M1 and M2.
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