Long-chain tin(iv) alkanethiolates (Sn(SCnH2n+1)4, n ≥ 12) with the coexistence of trans and gauche S–C bonds: a class of lamellar van der Waals molecular crystals

Abstract

Single-crystal XRD crystallography discloses a new class of vdWs molecular crystals, long-chain tin(IV) alkanethiolates (Sn(SC_nH_2n+1)₄, n ≥ 12). They exhibit a lamellar structure formed from molecular self-assembly due to the vdWs interactions of long all-trans alkyl chains, a nearly planar and rigid molecular geometry resulting from the coexistence of two trans and two gauche S–C bonds, and a variety of chain-length dependent physicochemical properties.