Polynuclear complexes with hydrogen-bonded bridges. Dinuclear complex of N,N'-bis(2-hydroxyethyl)-2,4-pentanediimine with copper(II)

Template Synthesis, Crystal Structure, and Magnetic Properties of a Dinuclear Copper(II) Complex with Cooperative Hydrogen Bonding

“…Table 4 shows that the average Cu-N and Cu-O distances (2.032 and 1.962 Å, respectively) of 1 are longer than those of 2-4. [6][7][8] The O(1)…O(2) i distance (2.531(3) Å) of 1 is also longer than the distances (2.29-2.46 Å) of 2-4. As a result, the Cu…Cu distance (5.037(2) Å) is longer than those …”

“…It has been revealed that the Cu-O distances of 2 and 4 are shorter than the Cu-N (primary or tertiary amino groups) distances. 7 In the case of 3, however, the Cu-O distances are longer than the Cu-N (imino groups) distances. The O-H…O and the Cu…Cu distances of 2-4 are influenced by their structural characteristics.…”

“…[1][2][3][4][5][6][7][8][9] Until now, various types of dinuclear copper(II) complexes have been prepared and investigated. Some dinuclear copper(II) complexes resulting from cooperative hydrogen bonding, such as 2-4 containing two N 2 O 2 donor sets, are also reported.…”

“…Some dinuclear copper(II) complexes resulting from cooperative hydrogen bonding, such as 2-4 containing two N 2 O 2 donor sets, are also reported. [6][7][8][9] In 2-4, each mononuclear unit contains both hydrogen-bond donor and accepter groups. It has been revealed that the Cu-O distances of 2 and 4 are shorter than the Cu-N (primary or tertiary amino groups) distances.…”

Synthesis, Characterization and ESR Studies of New Copper(II) Complexes of Vicinal Oxime Ligands

“…This value is close to that for a dimeric copper(II) compound in the triplet state. 62 However, the absence of any clear splitting of the two perpendicular features and the fact that this splitting is close to half that of the parallel lines seems to suggest that the g, hyperfine, and zero-field splitting axes .are very close to each other. This should not be the case for structure (a) since the two copper ions are considerably displaced off their Z axes as indicated.…”