The synthesis of novel bimetallic organochromium/organoiron monocation dipo
les comprising pi -conjugated complexes linked with conjugated spacers has
been performed utilising Stille and Sonogashira coupling reactions. This wo
rk establishes a general strategy for the synthesis of mixed-metal chromium
/dipole complexes for evaluation for nonlinear optical effects by hyper-Ray
leigh scattering. (C) 2001 Elsevier Science Ltd. All rights reserved.