[30]Metallacrown-10 Compounds: [Mn(C14H9N2O3)(CH3OH)]10⋅5 CH2Cl2⋅16 CH3OH⋅H2O and [Fe(C14H9N2O3)(CH3OH)]10⋅3 CH2Cl2⋅12.5 CH3OH⋅5 H2O

A mixed-type of azametallacrown containing [Mn6(pnhz)6(DMF)4(H2O)2] and [Mn6(pnhz)6(DMF)2(H2O)4] constructed by a flexible pentadentate ligand

“…Among the MCs, diaza-bridged metallacrowns (azaMCs) have gained ever increasing concern in the field of supramolecular chemistry, self-assembly and host-guest chemistry for their fascinatingly symmetrical multi-nuclear frameworks [5][6][7][8][9][10][11] and their potential applications as secondary building units (SBUs) in the construction of 2-or 3-D metal-organic frameworks (MOFs) through the bridging exo-bidentate ligands [12,13]. The self-assembly of the high-nuclear azaMCs with rigid N-terminal ligands has been intensively and, to some extent, successfully investigated [14][15][16][17][18][19][20][21][22][23][24], while of less interest is the exploration of the highly flexible N-terminal groups in such system, which may adjust various geometric modes to satisfy the requirements of assembly process and lead to interestingly structural topologies. Moreover, only few examples have been reported concerning the flexible N-terminal ligands, where diversely geometric configurations of the ligands are involved in one kind of 18-MC-6 [25,26].…”

Synthesis, crystal structure, and magnetic properties of two bent trinuclear Cu(II)/Ni(II) complexes of ligands derived from N-acyl-salicylhydrazides

“…The trianionic pentadentate N-acyl-salicylhydrazide ligands, have been utilized to construct many interesting polynuclear complexes. Trivalent metal ions such as Ga, Co, Fe and Mn that can generally form stable octahedral coordination are found to yield hexanuclear, octanuclear, decanuclear and dodecanuclear metallamacrocycles with these ligands, known as metallacrowns [7][8][9][10][11][12], where the ring size and nuclearity of the metallacrowns could be modulated by controlling the steric repulsion of the N-acyl side chains [13][14][15][16]. When the central atoms are bivalent metal ions that can easily form planar square coordination, only a few trinuclear Ni(II)/Cu(II) compounds with these types of ligands have been reported [17][18][19][20].…”

Benzotriazole controlled unusual building blocks in two zinc complexes and their fluorescence properties

“…One of the most effective approaches to obtain metal-organic polymeric frameworks is the hydrothermal method by combining appropriate metal ions (connectors) with multifunctional bridging ligands (linkers) [1][2][3][4][5]. Benzotriazole (BTA) was widely used in the construction of metal-organic frameworks due to its multifunctional linking role [6-9].…”