Novel high spin molecules and intermolecular aggregates

We tried different linkages of radical sites by nearly orthogonal alignment , connection through nodal planes of frontier orbitals, phenylene bridging of pi-radical ions, and intermolecular aggregation of radical ions. Thereby we found a new principle for high spin ground states of directly bridged p i-radical sites, when they are connected to centers of opposite sign of spi n density. Newly synthesized ortho-phenylene bridged bisphenothiazines and -phenoxazines and their oxidations are described and extended fuchsons for intermolecular aggregation.