In the title compound, C(18)H(16)N(2)S, the N-containing ring adopts a half-chair configuration. The crystal packing features C-H⋯N contacts. There is no π-π stacking within the crystal structure.

In the title compound, C(15)H(8)O, the asymmetric unit contains four independent mol-ecules and crystallizes with aromatic π-π stacking inter-actions[centroid-centroid distances = 3.5326 (18) Å].

In the title compound, C(7)H(8)NO(+)·I(-), N-H⋯I hydrogen bonding and π-π stacking inter-actions [centroid-centroid distance = 5.578 (4) Å] stabilize the structure.

Synergistic therapy is a promising strategy for cancer treatment. A nanoparticle with chemo-photodynamic properties was fabricated via π-π stacking interactions between the drug and photosensitizer. It exhibited efficient anticancer activity both in vitro and in vivo.

The title compound, C(60)H(76)Cl(4)O(12), has a macrocyclic structure and both the upper and lower rim have disordered atoms. There are no hydrogen bonds or π-π stacking inter-actions in the crystal.

DNA sequence-dependent photoluminescence enhancement is found for a cationic polyelectrolyte complexed with single stranded DNA and described as a result of an interplay between electrostatic attraction and the π-π stacking between the polyelectrolyte's backbone and DNA's bases.

In the title compound, C(14)H(10)N(2)O, all non-H atoms are essentially coplanar (r.m.s. deviation = 0.013 Å). The crystal structure is stabilized by π-π stacking inter-actions [centroid-centroid distance = 3.506 (3) Å].

We present a new family of supramolecular metallogels undergoing reversible multiphase transition triggered by temperature from amphiphilic alkynylplatinum(ii) complexes. Further investigation revealed that intermolecular PtPt and π-π stacking interactions facilitate such phase transitions upon increasing the temperature.

Two new compounds based on one mononuclear nickel(II) and homobinuclear copper(II) complexes respectively of general formula [Ni(dmbpy)2(CH3COO)]ClO4 (1) [Cu2(dmbpy)2(CH3COO)3]ClO4 (2) with dmbpy = 5,5′-dimethyl-2,2′-bipyridine, were synthesized by hydrothermal treatment. Both influenced the coordinated acetate ion molecule. The crystal molecular structures determined single X-ray diffraction m...

In the title compound, C(12)H(11)NOS, the dihedral angle between the oxopyridinium and phenyl rings is 58.40 (1)°. The crystal structure is stabilized by C-H⋯O hydrogen bonds, π-π stacking inter-actions involving the pyridinium rings [centroid-centroid distance = 3.6891 (9) Å] and C-H⋯π inter-actions.