In the crystal structure of the title compound, C13H10ClNO3S, the conformation of the of the N—H bond in the C—SO2—NH—C(O) segment is anti to the C=O bond. The dihedral angle between the two benzene rings is 73.3 (1)°. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds occur.

In the crystal structure of the title compound, C13H10ClNO3S, the conformation of the N—H bond in the C—SO2—NH—C(O) segment is anti to the C=O bond. The dihedral angle between the two aromatic rings is 68.6 (1)°. The mol­ecule is twisted at the S atom with a dihedral angle of 75.7 (1)° between the sulfonyl benzene ring and the —SO2—NH—C—O segment; the dihedral angle between the latter and the benzoyl ring is 8.3 (2)°. In the crystal, mol­ecules are linked by N—H⋯O(S) hydrogen bonds.

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A novel pillared-bilayer gadolinium-organic framework, {[Gd 2 (dhbdc)(dhbdcH 2 )(H 2 O) 5 ] 3 2H 2 O)} n (1), (dhbdcH 4 = 2.5-dihydroxyterephthalic acid), has been synthesized using hydrothermal technique and structurally characterized. 2D pillaredbilayer networks are interdigitated and H-bonded, forming a 3D supramolecular framework with two different channels along the c-axis. Framework exhibits stepwise release of the guest and coordinated water molecules and reversible single-crystal-to-single-crystal structural transformation upon removal and reintroduction of the guest water molecules. Partially dehydrated frameworks, {[Gd 2 (dhbdc)(dhbdcH 2 )(H 2 O) 5 ]} n (1 0 ) and {[Gd 2 (dhbdc)(dhbdcH 2 )(H 2 O) 4 ]} n (1 00 ) show different sorption capacity of N 2 realized by structural contraction in 1 00 . Framework 1 00 reveals strong hydrophilic character compare to 1 0 and both the frameworks 1 0 and 1 00 do not uptake other organic vapors like MeOH, CH 3 CN, and EtOH, suggesting size dependence in sorption properties.

The asymmetric unit of the title compound, C15H15NO3S, contains two independent mol­ecules. The conformations of the N—C bonds in the C—SO2—NH—C(O) segments have gauche torsions with respect to the SO bonds. Further, the mol­ecules are twisted at the S atoms with torsion angles of −53.1 (2) and 61.2 (2)° in the two mol­ecules. The dihedral angles between the sulfonyl benzene rings and the —SO2—NH—C—O segments are 86.0 (1) and 87.9 (1)°. Furthermore, the dihedral angles between the sulfonyl and the benzoyl benzene rings are 88.1 (1) and 83.5 (1)° in the two mol­ecules. In the crystal, mol­ecules are linked by N—H⋯O(S) hydrogen bonds.

Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.006 Å; disorder in main residue; R factor = 0.104; wR factor = 0.316; data-to-parameter ratio = 12.2.The title compound, C 31 H 27 F 3 O 7 , is a liquid crystal and exhibits enantiotropic SmA and nematic phase transitions. In the crystal, the the 2H-chromene ring system makes dihedral angles of 54.46 (17) and 7.79 (16) , respectively, with the central benzene ring and 4-(heptyloxy)benzene ring. The three F atoms of the -CF 3 group are disordered over two sets of sites, with an occupancy ratio of 0.62 (3):0.38 (3). The crystal structre features two pairs of C-HÁ Á ÁO hydrogen bonds, which form inversion dimers and generate R 2 2 (10) and R 2 2 (30) ring patterns. C-HÁ Á ÁO interactions along [100] and C-HÁ Á Á interactions futher consolidate the packing, leading to a three-dimensional network. Related literature

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