Room Temperature Syntheses, Structures and Magnetic Properties of Two Heterometallic Tetranuclear Clusters

Tetranuclear nickel(II) clusters: syntheses, crystal structures, magnetic properties and Hirshfeld surface analysis

“…The band at 1635 cm -1 is attributable to the carbonyl bond v(C=O) of free Haatp which red shifts to 1623 cm -1 and 1616 cm -1 for 1 and 2, respectively, indicating that the ketonic oxygen of aatp is coordinated [48]. The C-O stretching vibrations of free Haatp at 1248 cm -1 exhibits red shifts to 1223 cm -1 and 1235 cm -1 for 1 and 2, respectively, suggesting its participation in chelation [49,50]. The bands at 1437 cm -1 and 1437 cm -1 for 1 and 2 are assigned to the ν sym (COO) stretching frequency of CH 3 COO -and HCOO -, respectively [15,48].…”

Room Temperature Synthesis, Crystal Structure and Magnetic Property of a Two-Dimensional Copper(II) Polymer Bridged by End-On and End-to-End Azide Bridges

“…Calc. for 1: C 6 Caution: azide salts were used in small quantities and handled with care since explosion may occur.…”

“…As one of the most important molecular metal complexes systems, the azide bridged transition metal complexes have received considerable attention and provided a good test for theoretical analysis of the exchange coupling due to their broad range of structural and magnetic properties [3]. The azide group is of a versatile ligand which can act as a monodentate ligand as well as bridging ligand adopting the l 1,1 mode and l 1,1,1 mode via one nitrogen donor, and in the cis or trans l 1,3 mode, l 1,1,3 , l 1,1,1,3 and l 1,1,3,3 mode via both of the peripheral nitrogen donor atoms [4][5][6]. Furthermore, the magnetic properties of the azide bridged complexes mostly depend upon azide groups coordination modes.…”

Ligand Structure Induced Diversification from Dinuclear to 1D Chain Compounds: Syntheses, Structures and Fluorescence Properties

“…Although big progress has been achieved, it remains difficult to predict the exact structures and compositions of the final products built by coordination bonds and/or hydrogen bonds in crystal engineering [24]. It is known that several factors, such as the coordination nature of the metal ions, the presence of auxiliary ligands, and the stoichiometries of components, reaction temperature and reaction environments, may be crucial for the rational design of metal-organic coordination compounds [25][26][27][28][29].…”