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 = [a]