Crystalline spring: Single crystals formed from caffeine, 4‐chloro‐3‐nitrobenzoic acid, and methanol (1:1:<1) have an interlocked structure with weak interactions in the three perpendicular directions, as well as solvent channels, and display reversible elastic bending. Excellent conservation of long‐range order even after many bending cycles is observed, thus demonstrating the opportunities for flexible organic materials.

Montmorillonite K-10 mediated green and one-pot synthesis of 2-substituted quinolines has been accomplished via a 3-component reaction of aniline, aldehydes and ethyl 3,3diethoxypropionate in the presence of air oxygen in water. The crystal structure analysis and H-bonding patterns of one compound prepared are presented. † Electronic supplementary information (ESI) available: Experimental procedures, spectral data and copies of NMR for all new compounds. CCDC 864149. For ESI and crystallographic data in CIF or other electronic format see

A one-pot Yb(III)-mediated cascade reaction has been developed leading to small molecules based on a novel structural motif, i.e. quinazolin-4-one moiety fused with an isoquinoline ring, for potential inhibition of TNF-α.

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Although, dynamic crystals are attractive for use in many technologies, molecular level mechanisms of various solid‐state dynamic processes and their interdependence, remain poorly understood. Here, we report a rare example of a dynamic crystal (1), involving a heavy transition metal, rhenium, with an initial two‐face elasticity (within ≈1 % strain), followed by elasto‐plastic deformation, at room temperature. Further, these crystals transform to a rotator (plastic) crystal phase at ≈105 °C, displaying exceptional malleability. Qualitative and quantitative mechanical tests, X‐ray diffraction, μ‐Raman and polarized light microscopy experiments reveal that the elasto‐plastic deformation involves both partial molecular rotations and slip, while malleability in the rotator phase is facilitated by reorientational motions and increased symmetry (slip planes). Our work, connecting the plastically bendable (1D or 2D) crystals with the rotator phases (3D), is important for designing multi‐functional dynamic crystals.