Spin transition in a Langmuir–Blodgett film

Fe(X2Yphen)2(NCS)2(X2Yphen is a trisubstituted 1,10-phenanthroline with X = C17H35 and Y = C18H37O) incorporated in a Langmuir–Blodgett film shows a spin transition which has been studied by i.r. spectrometry.