Syntheses of 1,11-bis(salicylaldimine)-3,6,9-trithiaundecane (H2L1), 1,11-bis(salicylaldimine)-6-oxa-3,9-dithiaundecane (H2L2), and 1,8-bis(salicylaldimine)-3,6-dithiaundecane (H2L3), their nickel complexes [Ni(L1)]·H2O (I), [Ni(HL2)][OAc] (II), [Ni(L3)·HOAc]2[Ni(L3)·2HOAc]·3H2O (III), [Ni(HL1-sal)]Cl2·H2O (IV), [Ni(HL2-sal)]Cl2·CH3OH (V), [Ni(L3-sal)Cl]·H2O (VI), [Ni(HL1-sal)]Br2}2[Ni(L1-sal)]Br}·H2O (VII), [Ni(HL2-sal)]Br2}2[Ni(L2-sal)]Br}·2CH3OH (VIII), [Ni(HL3-sal)Br]Br}[Ni(L3-sal)Br]·2CH3OH (IX), [Ni(HL3-sal)Br]Br·CH3OH (X), [Ni(HL3)Br]·2H2O (XI), [Ni(HL1)]2[BF4]2·5H2O (XII), [Ni(HL2)]2[BF4]2·3H2O (XIII), [Ni(HL3)]2[BF4]2·CH3CN (XIV), and [Ni(HL3)]2[BF4]2·3H2O (XV) and their cobalt complexes [Co(L1-sal)][BF4]2 (XVI), [Co(L2)][OAc]·3H2O (XVII), [Co(L3)][OAc]·3H2O (XVIII), [Co(L3)][BF4] (XIX), and [Co(L3-sal)(CH3OH)][BF4]2·CH3OH (XX) are reported. Single crystal X-ray structural studies for III, XIV, XVI, and XIX are described. Cyclic voltammograms of the ligands and of I, II, III, VII, VIII, X, XIV, and XIX are discussed. Electronic spectra of the ligands and complexes are discussed.
From 1,11-bis(salicylaldimine)-3,6,9-trithiaundecane (H2L1), 1,11-bis(salicylaldimine)-6-oxa-3,9-dithiaundecane (H2L2), and 1,8-bis(salicylaldimine)-3,6-dithiaundecane (H2L3), syntheses for [Cu(L1)]2 (I), Cu(L2)·CH3OH (II), Cu(L3) (III), [Cu(HL3)][CH3COO] (IV), [Cu(HL1-sal)]Cl2 (V), Cu4(L1)2Br4(H2O)2·2H2O (VI) and Cu2(L2)Br2·xH2O (VII) are described. Single crystal X-ray structural studies for I, III and VII are reported. Variable temperature magnetic susceptibility studies of I, VI and VII are discussed. The examination of VII represents the first magneto-structural study of a binuclear copper(II) species with NSO3Br coordination spheres. This study examines perturbation by one or more of the donor atoms so that none of the known magnetostructural models predicts the copper–copper coupling.