Ferromagnetic Cu8 pinwheel clusters as building blocks for larger magnetic networks: Long-range structural and magnetic ordering

Synthesis and characterization of a cadmium-dichloro compound of N , N , O -di-2-pyridyl ketone thiophene-2-carboxylic acid hydrazone (η 3-dpktch). The structure of [CdCl2(η 3-dpktch)]

“…Hydrazones and their metal compounds have been extensively studied because of their rich physical properties, reactivity patterns, and applications in many important processes that include non-linear optics, liquid crystals, medicine, electrophotographic photoreceptors, molecular sensing and catalysis [1][2][3][4][5][6][7][8][9][10][11][12]. We have been interested in the chemistry of di-2-pyridyl ketone (dpk) and its oxime and hydrazone derivatives (see scheme 1), and reported on the synthesis, characterization and structures of a variety of di-2-pyridyl ketone derivatives and their rhenium, manganese and ruthenium compounds [13][14][15][16][17][18][19][20][21][22][23][24].…”

Liganddirected self-assembly of polymetallic [n × n] grids: rational routes to large functional molecular subunits?

“…21) via Cu-Br-Cu bridging interactions. 36 However, despite this association, there is no evidence for long range magnetic cooperativity, and the complex exhibits the normal intramolecular ferromagnetism observed for the Cu 8 pinwheels.…”

“…This cluster exhibits intramolecular antiferromagnetic exchange coupling, typical of the l 2 -NN and l 3 -OH subunits. 38,39 36 (dpocco − 4H) 12 -(l 3 -OH) 8 ](CH 3 COO) 16 . See Fig.…”

A 1D zinc(II) polymer with W-like pentanuclear secondary building blocks constructed by 2,6-pyridine-diacylhydrazone ligand

“…Indeed, many polynuclear complexes of 2,6-pyridinediacylhydrazone have been reported [21][22][23][24][25][26][27][28][29]. It is interest to see that most of which are trinuclear complexes [2,30,31] and nonanuclear clusters with [3 9 3] grid-type architectures [23,[32][33][34][35][36][37][38][39][40].…”