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Helical architectures with controllable helical sense bias have recently attracted considerable interest for mimicking biological helices and developing novel chiral materials. Coordination polymers (CPs), composed of metal ion nodes and organic linkers, are intriguing systems showing tunable structures and functions. However, CPs with helical morphologies have rarely been explored so far. Particularly, chirality inversion through external stimulus has not been achieved in helical CPs. In this work, we carried out an in‐depth investigation on the self‐assembly of 1D gadolinium(III) phosphonate CPs using GdX3 (X=Cl, Br, I) and Gd(RSO3) (R=CH3, C6H5, CF3) as metal sources and R‐(1‐phenylethylamino)methyl phosphonic acid (R‐pempH2) as ligand. Superhelices were formed by precise control of the interchain interactions through different intercalated anions. Furthermore, the twisting direction of superhelices could be controlled by synergistic effect of anions and pH. This study may provide a new route to fabricate helical nanostructures of CPs with a desirable chiral sense and help understand the inner mechanism of the self‐assembly process of macroscopic helical structures of molecular systems. [ABSTRACT FROM AUTHOR]

C16H17N1O4, triclinic, P1 (no. 2), a = 7.0971(3) Å, b = 7.6638(4) Å, c = 13.2375(6) Å, α = 92.116(10)°, β = 99.690(10)°, γ = 95.196(10)° V = 705.81(6) ų, Z = 2, Rgt(F) = 0.0529, wRref(F²) = 0.1489, T = 296(2) K. [ABSTRACT FROM AUTHOR]

C16H17N1O4, triclinic, P1 (no. 2), a = 7.0971(3) Å, b = 7.6638(4) Å, c = 13.2375(6) Å, α = 92.116(10)°, β = 99.690(10)°, γ = 95.196(10)° V = 705.81(6) ų, Z = 2, Rgt(F) = 0.0529, wRref(F²) = 0.1489, T = 296(2) K. [ABSTRACT FROM AUTHOR]

In the title compound, C15H12FN3O, an intra­molecular C—H⋯F hydrogen bond forms a six-membered ring. Mol­ecules are linked into a tape along the b axis by an inter­molecular C—H⋯N hydrogen bond. The crystal packing is further stabilized by C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, C15H12ClN3O, the dihedral angle between the benzotriazole ring system and the chlorobenzene ring is 63.06 (1)°.π−π Interactions stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

In the title compound, C15H12FN3O, the dihedral angle between the benzotriazole fragment and the benzene ring is 19.0 (1)°. C—H…π interactions and van der Waals forces stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, C23H19N3O3, molecules are linked into chains parallel to the c axis by C—H...O hydrogen bonds. Adjacent chains are assembled into two-dimensional layers via C—H...N hydrogen bonds. The packing is further stabilized by π–π interactions between triazole and phenyl rings. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, C22H13Cl3N3O3, weak intermolecular C—H...Cl hydrogen bonds link the molecules into chains extending along the c axis. The packing is further stabilized by weak C—H...O interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C25H23N3O3, mol­ecules are linked into chains along the c axis by inter­molecular C—H⋯O hydrogen bonds. The packing is further stabilized by C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the mol­ecule of the title compound, C23H17Cl2N3O3, the nearly planar benzotriazole system is oriented at dihedral angles of 19.53 (1) and 62.95 (1)°, respectively, with respect to the tolyl and dichloro­phenyl rings. In the crystal structure, mol­ecules are linked into chains along the a axis by inter­molecular C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C21H15ClN4O3, mol­ecules are linked into dimers by C—H⋯O hydrogen bonds and are linked into chains along the a axis by C—H⋯N inter­molecular hydrogen bonds. The packing is further stabilized by C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C15H12ClN3O, the mol­ecules are linked into centrosymmetric dimers by C—H⋯O inter­molecular hydrogen bonds. The mol­ecular packing is further stabilized by π–π inter­actions. [ABSTRACT FROM AUTHOR]

There are two molecules in the asymmetric unit of the title compound, C21H15FN4O3. In the crystal structure, two intramolecular C— H⋯O hydrogen bonds form two five-membered rings. The molecules are linked into infinite chains along the b axis by intermolecular C--H⋯O hydrogen bonds, and further linked by C—-H⋯N interactions along the a axis. The packing is further stabilized by C—H⋯π interactions. [ABSTRACT FROM AUTHOR]

In the molecule of the title compound, C22H16FN3O3, intramolecular C—H...F hydrogen bonding results in the formation of a six-membered ring. In the crystal structure, intermolecular C—H...O hydrogen bonds link the molecules into centrosymmetric dimers. The packing is further stabilized by π–π interactions [centroid–centroid distance = 3.601 (2) Å]. [ABSTRACT FROM AUTHOR]

In the title compound, C22H14Cl2FN3O3, the two molecules in the asymmetric unit are linked into infinite chains along the a axis by intermolecular C—H...N and C—H...Cl hydrogen bonds. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound, C10H14O3, comprises two independent molecules. All bond lengths and angles are within normal ranges. [ABSTRACT FROM AUTHOR]