Search

The synthesis and characterization of photonucleases N,N'-bis[2-[bis(1H-imidazol-4-ylmethyl)amino]ethyl]-3,6-arcidinediamine and N-[2-[bis(1H-imidazol-4-ylmethyl)amino]-3,6-acridinediamine, consisting of a central 3,6-acridinediamine chromophore attached to 4 and 2 metal-coordinating imidazole rings, respectively, are reported. The data indicates that buffer, pH, Hg(II), Fe(III), Cd(II), Zn(II), V(V), Pb(II), and light can be used to tune DNA cleavage by N,N'-bis[2-[bis(1H-imidazol-4-ylmethyl)amino]ethyl]-3,6-arcidinediamine under physiologically relevant conditions.

Incomplete cuboidal clusters when reacted with group 14 and 15 metal complexes with [s.sup.2][p.sup.0] electronic configuration resulted in the formation of heterometal incorporated cuboidal clusters. X-ray diffraction studies showed the cuboidal clusters as weak complexes of the cluster tridentate ligand with [EX.sub.3].

A new heterometallic iodometallate containing Pb and Cu, [[Co[(phen).sub.3]].sub.2][[Pb.sub.3][Cu.sub.6][I.sub.16].[C.sub.2][H.sub.5]OH, is synthesized that displays a novel [Pb.sub.3][I.sub.6][I.sub.16] net structure. The clusters form a BN-type layer, where [Pb.sub.3][I.sub.11] and [Cu.sub.6][I.sub.11] clusters take the place of B and N, and the layers contain cavities in which ethanol molecules are located.