Amino Acid Functionalized Organotin Trichlorides and Their Tin Sulfide Clusters

We present a new synthesis of functionalized tin sulfide clusters via organotin trichlorides with boc‐protected amino acids (R AAc SnCl 3 ). In this work we used non‐polar (alanine, valine, leucine, phenylalanine and methionine), polar/neutral (serine and tyrosine) and basic (histidine) amino acids. We obtained single crystals from a Boc‐protected valine derivative of the originally used organotin trichloride R 1 SnCl 3 [R 1 = CMe 2 CH 2 C(O)Me] and determined its structure by means of X‐ray diffraction. A subsequent reaction with sulfide sources led to a variety of respective cluster structures. By using either (Me 3 Si) 2 S or Na 2 S, the reaction product turns out to be the defect‐heterocubane cluster [(R AAc Sn) 3 S 4 Cl] or the “doppeldecker”‐type cluster [(R AAc Sn) 4 S 6 ], respectively, according to 119 Sn NMR spectroscopy.