Trinuclear Cobalt(II) and Zinc(II) Salamo‐type Complexes: Syntheses, Crystal Structures, and Fluorescent Properties

Abstract

Two trinuclear Co II and Zn II complexes, [(CoL) 2 (OAc) 2 Co] and [(ZnL) 2 (OAc) 2 Zn], with an asymmetric Salentype bisoxime ligand [H 2]diphenol] were synthesized and characterized by elemental analyses, IR, UV/Vis, and fluorescent spectroscopy. The crystal structures of the Co II and Zn II complexes were determined by single-crystal X-ray diffraction methods. The Co II atom is pentacoodinated by N 2 O 2 donor atoms from the (L) 2unit and one oxygen atom from the coordinated acetate ion, resulting in a trigonal bipyramid arrangement. With the help of intermolecular hydrogen

Synthesis and crystal structure of bis(μ2-acetato-κ2 O:O′)-bis{μ2-4-chloro-2-(8-(4-(diethylamino)-2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenolato-κ6 O:O,N,N′,O′:O′}trizinc(II), C44H49Cl2N6O12Zn3

“…New research fields are the use of such complexes in a very wide and diversified subjects such as, optical and magnetic materials [5][6][7][8][9][10] and supramolecular architectures [11][12][13][14][15][16].…”

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

“…A typical C=N stretching band of the free ligands H 2 L 1 and HL 2 appears at 1619 and 1604 cm −1 , and that of complexes 1 and 2 at 1581 and 1597 cm −1 , respectively [49]. The C=N stretching frequencies are shifted to low frequencies, indicating that the Zn(II) atoms are coordinated by azomethine nitrogen atoms of (L 1 ) 2− and (L 2 ) 1− moieties.…”

Structural and Luminescent Properties of Heterobimetallic Zinc(II)-Europium(III) Dimer Constructed from N2O2-Type Bisoxime and Terephthalic Acid

“…Salen-and salamo-type complexes have been extensively investigated in organometallic chemistry and modern coordination chemistry for several decades [7][8][9][10][11], their complexes are well-known for their potential applications in many areas, such as catalysts [12,13], biological fields [14][15][16][17][18][19][20][21], supramolecular buildings [22][23][24][25][26], molecular recognitions [27][28][29][30][31], magnetic [32][33][34][35][36][37] and luminescence [38][39][40][41][42][43][44][45] materials and so forth. Self-assembling processes of a metallohost complex with auxiliary organic ligands are usually utilized in the building of metal-organic framework (MOF) materials [46,47].…”