Easy access to strongly fluorescent higher homologues of BODIPY.

We present the easy and high yield synthesis of several group 13 DPM compounds (Al-In) with alkyl substituents at the metal atom. All these compounds were fully characterized using techniques including X-ray diffraction analysis and photoluminescence measurements. It shows that for aluminium and gallium pronounced green fluorescence is observed, which is absent for indium.

Formation and Reactivity of heavy Group 14-15 bonds.

A series of low-valent Group 14-15 compounds were obtained starting from [(Dipp NacNac)MCl] (M=Ge-Pb) (I-III) (Dipp NacNac=HC{C(Me)N(Dipp)} ) and M'E(SiMe ) (M'=Li, E=As; M'=K, E=Sb, Bi) (IV-VI). In the course of this investigations we were able to fully characterize all permutations except Pb-Bi for compounds of the composition [(Dipp NacNac)ME(SiMe ) ] (1 : M=Ge, 2 : M=Sn, 3 : M=Pb). Thus, we report the first low valent tetrelene with Sn-Bi bond.