?5-Monocyclopenta¬dienylmetal(II) complexes with thienyl acetylide chromophores: synthesis, electrochemical studies and first hyperpolarizabilities - Mendes, Paulo J.; Ramalho, J.P. Prates; Carvalho, A. J. Palace; Silva, Tiago J.L.; Santos, Ana M.; Garcia, M. Helena; Robalo, M. Paula; Bu?chert, Marina; Wittenburg, Christian; Heck, Ju?rgen (2014)