Coordination chemistry of thioether–pyridazine macrocycles II. Synthesis, structural and spectroscopic studies of dinuclear copper(II) and polynuclear copper(I) and silver(I) complexes of a tetrathiapyridazinophane macrocyclic ligand

Abstract

. Can. J. Chem. 70,2709Chem. 70, (1992. The preparation and properties of the thioether-pyridazine macrocycle (L3; Cl,H16N2S4) containing one pyridazine subunit, and its copper(II), copper(I), and silver(1) complexes are described. Magnetic susceptibility data (5-300 K) for the binuclear complexes [CuL3Cl2I2 (I) and [CuL3Br2I2 (11) have been fitted to the Friedberg magnetization expression with a molecular field correction. Intradimer antiferromagnetic exchange is weak (-25 < 18 cm-I), with even weaker interdimer exchange (-zJ' < 0.3 cm-I). The complexes [CUL~CI], (111) [Traduit par la rCdaction]

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

“…Although some few reports deal on the construction of coordination compounds assembled by thioether ligands bound to the harder Cu(II) ion [59][60][61][62], we are not aware of any 3D material of this type. In light of the application of Cu(II)-containing materials in the domain of molecular magnetism [63][64][65][66], the crystal engineering of 3D materials combining the paramagnetic Cu(II) salts and organosulfur ligand appears as interesting perspective.…”

Coordination chemistry of thioether–pyridazine macrocycles. III. Synthetic, structural, and spectroscopic studies of Cu(II), Cu(II)Cu(I), and Cu(I) complexes of a hexathiapyridazinophane macrocyclic ligand

“…This band shifts 8-23 cm-' to lower energy in all the complexes (Table 8), suggesting the coordination of pyridazine rings (28,29). With ligands L1 and L2 sulfur coordination was accompanied by a small shift in this band to higher energy (1-2 cm-I), while for nitrogen coordination shifts to lower energy were observed (-5 to -1 1 cm-I) (28).…”

“…However, our initial studies in this area, which have involved the syntheses and structural and spectroscopic studies of a series of copper(II), copper(I), and silver([) complexes of thioetherpyridazine macrocycles containing one, two, and three pyridazine subunits (L3, L2, L1, Fig. 1 ) (28,29), have shown that, so far, simultaneous intraligand NS coordination does not occur. The present paper describes the copper coordination chemistry of the 2 : 2 macrocyclic ligand L4 (Fig.…”

Some Copper and Cobalt Complexes of Schiff-Base Macrocycles Containing Pyridazine Head Units

“…L6 to H 2 L12, Figure 5). [55,56,59,64Ϫ66] Figure 5. A selection of thioether pyridazine-and phthalazine-containing macrocycles Initially both [2ϩ2] and [3ϩ3] thioether macrocycles were obtained from the reaction of 3,6-dichloropyridazine and 1,3-propanedithiol (L6 and L7, Figure 5): these macrocycles were separated from one another readily on the basis of solubility.…”

“…A selection of thioether pyridazine-and phthalazine-containing macrocycles Initially both [2ϩ2] and [3ϩ3] thioether macrocycles were obtained from the reaction of 3,6-dichloropyridazine and 1,3-propanedithiol (L6 and L7, Figure 5): these macrocycles were separated from one another readily on the basis of solubility. [56] Other dithiols employed in the cyclisation with 3,6-dichloropyridazine included 3,7-dithianonane-1,9-dithiol, [55] 2,2Ј-thiodiethanethiol (L10, Figure 5), [64,65] and 1,4,7,10-tetrathiadecane. [65] Some [2ϩ2] phthalazine analogues were prepared by reaction of 1,4-dichlorophthalazine with 1,3-propanedithiol (L8, Figure 5), 3,7-dithianonane-1,9-dithiol (L9, Figure 5) or 2,2Ј-thiodiethanethiol.…”