Intramolecular coordination of bidentate Lewis bases to a cofacial binuclear copper(II) complex

Synthesis, Characterization and Biological Studies of Homobimetallic Schiff Base Cu(II) and Ni(II) Complexes

“…used as a versatile building unit for constructing various supramolecular assemblies [14][15][16] . Synthetic binuclear copper(II) complexes provide models for metalloprotein active sites and lend insight towards the design of new catalysts.…”

Metallasupramolecular Architectures, an Overview of Functional Properties and Applications

“…The first investigation on the binding properties of a metallamacrocycle toward small organic molecules has been reported by Maverick et al in 1986. 6 They compared binding constants for the dinuclear copper(II) cycle 2 ( Fig.…”

“…6 They compared binding constants for the dinuclear copper(II) cycle 2 ( Fig. 1) with mono-or difunctional Lewis bases such as pyridine (K a = 0.5 M −1 ), quinuclidine (K a = 7 M −1 ), pyrazine (K a = 5 M −1 ) and dabco (K a = 220 M −1 ) in CHCl 3 solutions, and concluded that the larger constants for the potentially bidentate coordinating compounds were consistent with internal coordination in the cavity.…”

Mononuclear and binuclear products from bis(acetylacetonato)zinc and 1,4-diazabicyclo[2.2.2]octane (Dabco)

“…If the Zn-..Zn distance in [{Zn2(NBA)z}(/z-Dabco)] is similar to that in (II), this will represent a substantial contraction relative to the distances in [{Cu2(NBA)2}(/z-G)] [G= Dabco, 7-403 (4)A (Maverick, Buckingham, Yao, Bradbury & Stanley, 1986); G=2,5-dimethylpyrazine, 7.596 (2) and 7.559 (1)/~ (Maverick, Ivie, Waggenspack & Fronczek, 1990)]. The shorter metal-metal distance in the Zn complex could easily be accommodated by bending the acac moieties in the bridging ligands closer together, which would make the environment about Zn more pyramidal.…”

“…The cofacial binuclear complex Cu2(NBA)* (see scheme) recognizes and binds small guest molecules G (Maverick, Ivie, Waggenspack & Fronczek, 1990;Maverick, Buckingham, Yao, Bradbury & Stanley, 1986). We are currently preparing zinc analogs of these complexes as models for the active site of E. coli alkaline phosphatase (Coleman & Gettins, 1983).…”