Six Cu(I) coordination polymers (CPs)-[CuIL] (1), {[CuIL]·2MeCN} (2), [CuIL] (3), {[CuIL]·CHCl} (4), {[CuIL]·CHCl} (5), and {[CuIL]·CH} (6)-were synthesized by self-assembly reactions of CuI and the flexible mixed N/S donor ligand 4-(2-(cyclohexylthio)ethoxy)pyridine (L). Single-crystal X-ray diffraction analyses reveal that these 1D CPs form sets of supramolecular isomers; 1 and 2 are based on CuI rhomboids, while 3-6 are based on cubane CuI clusters. Crystal-to-crystal transformations of CPs 1-6 were reversible under heat or in an appropriate solvent (acetonitrile, dichloromethane, chloroform, or benzene). In addition, crystal transformations between CPs 1 and 3 occurred through addition of L or CuI. Moreover, CPs 3-6 exhibited reversible guest exchange and crystal transformations on exposure to the vapor of volatile organic compounds and heat. Remarkably, a guest molecule was exchanged by other guest molecules in the vapor phase within very short times and without the use of acetonitrile as a solvent, which normally plays a key role in trapped solvent exchange experiments.

Three copper(I) complexes, [Cu8I8(PMS)4(MeCN)2] n (1), Cu4I4(PMS)4 (2), and Cu2I2(PMS)4 (3) were prepared by the self‐assembly reaction of mole ratio‐controlled CuI and pentamethylene sulfide (PMS). Single crystal X‐ray diffraction analyses displayed crystal structures of three complexes based on new S‐shaped Cu8I8, cubane Cu4I4, and rhomboid Cu2I2 cluster units for 1–3, respectively. Crystal transformations between 1, 2, and 3 were controlled by the addition of PMS or CuI/acetonitrile. Luminescence properties of 1 and 2 were investigated. Complex 1 showed two very weak emission bands, which were assigned to HE band for λmax = 415 nm and LE band for λmax = 575 nm under ultraviolet irradiation (λex = 355 nm). Complex 2 displayed luminescence thermochromism with a slightly hypsochromic shift from 572 to 565 nm (λex = 355 nm).

In the title compound, the CuI atom is coordinated by two S atoms and two I atoms in a distorted tetra­hedral mode.

The title compound, C 16 H 14 F 5 N 5 O 5 S [systematic name: 2-(2,2-difluoroethoxy)-N-(5,8-dimethoxy-1,2,4-triazolo[1,5-c]pyrimidin-2-yl)-6-(trifluoromethyl)-benzenesulfonamide], is used as a herbicide. The asymmetric unit of this structure comprises two independent molecules, A and B. The dihedral angles between the ring planes of the triazolopyrimidine ring systems and the benzene rings are 68.84 (7) for A and 68.05 (6) for B. In the crystal, weak intermolecular -interactions, with centroid-centroid separations of 3.4456 (17) and 3.5289 (15) Å and C-FÁ Á Á [3.5335 (17) Å and 107.92 (13) ] contacts link adjacent molecules into chains along [001]. C-HÁ Á ÁO and C-HÁ Á ÁF hydrogen bonds link type B molecules into chains parallel to (100). Additional C-HÁ Á ÁF hydrogen bonds together with short FÁ Á ÁF contacts further aggregate the structure into a three-dimensional network.