Structural, spectral, electrochemical and DFT studies of two mononuclear manganese(II) and zinc(II) complexes

Synthesis and Fluorescence Properties of Asymmetrical Salamo-Type Tetranuclear Zinc(II) Complex

“…Thus, two pairs of intramolecular hydrogen bonds C9-H9B···O7, C9 # -H9B # ···O7 # , O9-H9···O5 and O9 # -H9 # ···O5 # [53][54][55][56][57][58][59] are formed. Under the intermolecular force of C7-H7···O6 and C7 # -H7 # ···O6 # , a 1D supramolecular chain that extends infinitely in the b axis direction is formed by the crystal of [{Zn(L)(µ-OAc)Zn(CH 3 CH 2 OH)} 2 ], as depicted in Figure 4 [60][61][62][63][64][65][66][67]. The complex [{Zn(L)(µ-OAc)Zn(CH3CH2OH)}2] belongs to the triclinic system, with space group P-1, and consists of four zinc(II) atoms and two completely deprotonated (L) 3− linkers, with two ethanol molecules and two bonded acetate ions.…”

Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

“…The phenolic oxygen (O3) and the oxime nitrogen (N2) of the (L 1 ) 2− unit and one oxygen (O9) atom of the coordinated ethanol molecule constitute, together, the basal plane (Zn1-O3, 1.940(5) Å; Zn1-N2, 2.036(7) Å and Zn1-O9, 2.049(6) Å), and other phenolic oxygen (O6) and oxime nitrogen (N1) atoms of the (L 1 ) 2− unit occupy the axial positions (Zn1-O6, 1.994(5) and Zn1-N1, 2.187(7) Å). The three coordination atoms on the base plane and the Zn(II) ion is 0.062(3) Å displaced from the mean plane [55,56]. Additionally, four of the intramolecular C10-H10···O2, C11-H11A···O9, C13-H13···O7, and C25-H25B···O6 hydrogen bonds were formed ( Table 3).…”

Crystal structure of bis(μ2-methanolato-κ2 O:O)-bis(methanol-κ1 O)-bis{3-((4-methoxy-2-oxidobenzylidene)amino)-2-oxo-2H-chromen-4-olato-κ3 O,O′,N}dichromium(III), C38H36Cr2N2O14

“…And they can form many types of stable metal complexes [6][7][8][9], which are considered more and more important because of their topology and are widely used in biochemistry [10,11]. Some of them have magnetic properties [12,13], photophysical properties [14,15], and are used in the field of molecular recognition [16][17][18] In the crystal structure, there are weak non-classical intermolecular hydrogen bonds, which link the complex into an infinite 2D-layer supramolecular structure along the bc plane. This linkage is further stabilized by the intermolecular C-H· · · π interactions to form a 3D supramolecular network structure.…”