Multiferroic Homochiral Metal−Organic Framework

The hydrothermal reaction of (l)-ethyl lactate (Lig-Et) with
Tb(ClO4)3·6H2O gives colorless block (Lig)2Tb(H2O)2(ClO4) (1), in
which 1 displays a laminar 2D framework. Ferroelectric and
magnetic property measurements reveal that 1 probably is the
first example of two “ferroic” metal−organic frameworks. Ferroelectricity of its analogue, (Lig)2Tb(D2O)2(ClO4) (2), further confirms
the presence of the ferroelectric deuterium effect.