Synthesis of SnBrP


Recently, a compound consisting of Sn, I and P in equal proportions has been discovered
and named SnIP for its chemical formula. This compound is unique in that it exhibits an
atomic-scale helical structure while being entirely inorganic and a semiconductor. Particu-
larly interesting is its high mechanical flexibility: SnIP needles have been bent
180° without visible damage. This makes SnIP ideal for applications in flexible electronics and sensing
technology. Theoretical studies have suggested that a number of similar atomic-scale dou-
ble helical semiconductors exist that can be obtained by substituting various components of
SnIP. This paper reports the synthesis of SnBrP, confirmed by SEM and EDX. XRPD
analysis was performed, but a diffractogram for SnBrP could not be obtained