Two novel ruthenium polypyridyl complexes, Ru[(bpy)2(pedppz)](2+) (1) and Ru[(bpy)2(pemitatp)](2+) (2) (bpy = 2'2-bipyridine, pdeppz = 10-(2-(piperidin-1-yl)ethoxy)dipyrido[3,2-a:2',3'-c]phenazine, pemitatp = 5-methoxy-1-(2-(piperidin-1-yl)ethyl)-isatino[1,2-b]-1,4,8,9-tetraazatriphenylene), bearing large planar π-delocalized aromatic systems with flexible chains have been synthesised and characterised. As expected, these complexes show inhibition towards telomerase by inducing and stabilising the G-quadruplex structure.

Though the reaction chemistry of three-membered ring molecules such as cyclopropanes and their heteroatom-containing analogues has been extensively studied, the chemical properties of their boron analogues, boriranes, are little known...

An efficient synthesis of an acid‐free neutral oxoborane of the type carboranyl‐B(carbene)=O has been developed via a serendipitous discovery from the reaction of 1,2‐[BBr(carbene)]‐o‐carborane with AgOTf. This represents a new type of oxoborane. The stabilization of this oxoborane may be attributed to 1) kinetic stabilization provided by a bulky 3D carboranyl ligand and 2) thermodynamic stabilization offered by a carbene ligand. Crystallographic analyses support the presence of the shortest terminal B=O double bond ever reported thus far. Its reactivity has also been examined.