Tin(II) sulfide Tin(II) sulfide Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite (α-SnS), a rare mineral. At elevated temperatures above 905K, SnS undergoes a second order phase transition to β-SnS (space group: cmcm, No. 63). in recent years, it has become evident that a new polymorph of SnS exist based upon the cubic crystal system, π-SnS (space group: P23, No. 198). Tin(II) sulfide can be prepared by reacting tin with sulfur, or tin(II) chloride with hydrogen sulfide. Tin(II) sulfide is a dark brown or black solid, insoluble in water, but
The Anniversary (Fawlty Towers) The Anniversary (Fawlty Towers) "The Anniversary" is the fifth episode of the second series of BBC sitcom "Fawlty Towers". As in other episodes, the letters of the sign for Fawlty Towers are shown rearranged in the opening sequence. In this episode, it says "Flowery Twats". The use of the obscene word has caused this to be given a 12 certificate by the BBFC, which is the only episode in the series to have a more restrictive rating than PG. On the morning of their wedding anniversary, Sybil recalls how Basil forgot last year. Basil has secretly invited their closest friends