Conspectus Conducting a reaction in the solid state eliminates the usage of solvents. If such
reactions are conducted in a single-crystal to single-crystal (SCSC) fashion, then structural …

Syntheses of functional cyclobutanes, ie, strained four-membered ring compounds are
mainly achieved via photochemical [2+ 2] cycloaddition reaction. The key is to bring two …

The present review focuses on the solid state structural transformations in discrete
molecules. Since the molecules in the crystal lattice are closely packed, any transformation …

Topochemical reactions provide selective products based on the molecular position;
however, they generally require molecules to be placed in strictly limited orientations and …

Regioselective photodimerization of trans‐4‐styrylpyridine (4‐spy) derivatives is performed
using pseudorotaxane‐like Zn‐based metal organic frameworks MOFs as templates. The …

Highly crystalline metal ions containing organic polymers are potentially useful to
manipulate the magnetic and optical properties to make advanced multifunctional materials …

Molecular architectures containing photosensitive units respond to light, giving dramatic
variations of their structure. In particular, the crystalline packing phases offer the possibility of …

Flexible molecular crystals with stimuli-responsive properties are highly desirable; however,
uncovering them is still a challenging goal. Herein, we report a cocrystal approach to obtain …

Engineering the preorganization of photoactive units remains a big challenge in solid-state
photochemistry research. It is of not only theoretical importance in the construction of …

Solid-state photochemical [2+ 2] cycloaddition reaction is one of the promising routes to
isolate highly strained cyclobutane derivatives, which may otherwise be very difficult to …