Synthesis, structure, catalytic and cytotoxic activities of chlorido­(5-nitro­quinolin-8-olato-κ²N,O)(tri­cyclo­hexyl­phosphine-κP)platinum(II)

In the title square-planar complex, the P atom of the tri­cyclo­hexyl­phosphine group coordinates to the metal atom in the trans position compared to the coordinating N atom. The complex shows significant catalytic ability and selectivity for hydro­silylation between phenyl­acetyl­ene and tri­ethyl­silane.

Crystal structure and Hirshfeld surface analysis of (E)-1-{2,2-di­bromo-1-[4-(tert-but­yl)phen­yl]ethen­yl}-2-(3,4-di­methyl­phen­yl)diazene

The title azo compound crystallizes in the triclinic space group P1 with two independent mol­ecules in the asymmetric unit. Hirshfeld surface analysis and energy framework calculations revealed key non-covalent inter­actions such as C—H⋯π, C—H⋯Br, π–π stacking, and halogen bonding, which consolidate the crystal structure.

Whole-mol­ecule disorder of the heterometallic complex di­aqua-1κ²O-di­chlorido-2κ²Cl-(μ-2-formyl-6-meth­oxy­phenolato-1κ²O¹,O²:2κO⁶){μ-2-meth­oxy-6-[(methyl­imino)­meth­yl]phenolato-1κ²N,O¹:2κO⁶}lead(II)nickel(II)

In the crystal the title compound exhibits full-mol­ecule disorder [occupancy ratio 0.711 (6): 0.289 (6)], generated by a false twofold rotation about the shorter, Ni–Pb, axis of the mol­ecule.

Synthesis and structure of 6-bromo-2-(di­eth­oxymeth­yl)-2-hy­droxy-3-phenyl-2,3-di­hydro-1H-imidazo[1,2-a]pyridin-4-ium chloride aceto­nitrile monosolvate

In the crystal of the title solvate, O—H⋯Cl and N—H⋯Cl hydrogen bonds link the cations and anions into centrosymmetric tetra­mers.

Two crystal structures of copper(II) complexes and adducts based on the neutral N¹,N¹-di­methyl-N²-(pyridin-2-ylmeth­yl)ethane-1,2-di­amine ligand

Two crystal structures of copper(II) complexes with a tridentate ligand are reported, new [Cu(N^N^N)(H₂O)Cl][Cu(N^N^N)Cl₂][CuCl₄] and already known [Cu(N^N^N)(NCS)₂]·0.3 H₂O, (N^N^N = N¹,N¹-dimethyl-N²-(pyridin-2-ylmeth­yl)ethane-1,2-di­amine), which exhibit a considerable range of inter­molecular inter­actions and notable packing patterns that are being discussed.

Iso­propyl­ammonium halidometallates. I. [CoX₄]²⁻·X⁻ (X = Cl, Br), ZnCl₄²⁻, and [ZnCl₃⁻]_n salts

The structures of the iso­propyl­ammonium halidometallate salts (IPA⁺)₃CoX₅ (X = Cl, Br), (IPA⁺)₂ZnCl₄ and (IPA⁺)ZnCl₃ are reported along with a survey of known iso­propyl­ammonium halidometallates, and a study of IPA⁺ cation geometry (both experimental and theoretical) juxtaposed with that of the trimethylammonium TMA⁺) cation.

Syntheses and crystal structures of di­chlorido­bis­(2,3-di­methyl­pyrazine-κN)zinc(II) and catena-poly[[di­chlorido­zinc(II)]-μ-2,3-di­methyl­pyrazine-κ²N¹:N⁴]

The syntheses and crystal structures of two new ZnCl₂–2,3-di­methyl­pyrazine (C₆H₈N₂) coordination compounds with the composition ZnCl₂(C₆H₈N₂)₂ (1) and ZnCl₂((C₆H₈N₂) (2) are reported. Compound 1 consists of discrete complexes, whereas in compound 2 the Zn cations are linked by the 2,3-di­methyl­pyrazine ligands into helical [001] chains.

Synthesis and crystal structures of 6- and 8-methyl-3-phenyl­benzo[e][1,2,4]triazines

The crystal structures of two Blatter radical precursors, 6-methyl-3-phenyl­benzo[e][1,2,4]triazine and 8-methyl-3-phenyl­benzo[e][1,2,4]triazine, exhibit extended conjugated heteroaromatic frameworks, with unidimensional columnar arrangements governed by π–π stacking inter­actions with little impact from the methyl substituent position on the core geometry.

Crystal structure and Hirshfeld surface analysis of 4-methyl-N-[2-(5-methyl­furan-2-yl)phen­yl]-N-[(5-phenyl­furan-2-yl)meth­yl]benzene­sulfonamide

In the crystal, mol­ecules are linked by C—H⋯O inter­actions, forming layers parallel to the (100) plane. In addition, π–π [centroid-to-centroid distance = 3.4961 (7) Å] and C—H⋯π inter­actions connect mol­ecules within the layers. The layers are also bound to each other by van der Waals inter­actions.

Crystal structure of 4-(3,5-di­methyl-1,7-di­phenyl-1,7-di­hydro­dipyrazolo­[3,4-b:4′,3′-e]pyridin-4-yl)phenol di­methyl sulfoxide disolvate

The mol­ecular and crystal structure of the novel compound 4-(3,5-Dimethyl-1,7-diphenyl-1,7-di­hydro­dipyrazolo­[3,4 − b:4′,3′-e]pyridin-4-yl)phenol are reported.

Synthesis and crystal structure of a new isomer of poly[di-μ₃-cyanido-μ-2,6-di­methyl­pyrazine-dicopper(I)]

In the crystal structure of the title compound, the copper(I) cations are linked by the cyanide anions into layers that are additionally connected by the 2,6-di­methyl­pyrazine ligands into a 3D network. The title compound represents a new isomer of Cu₂(CN)₂(2,6-di­methyl­pyrazine), which has already been reported in the literature.

Crystal structure and Hirshfeld surface analysis of [(R,S)-2,8-bis­(tri­fluoro­meth­yl)quinolin-4-yl](piperidin-2-yl)methanol methanol monosolvate

The compound [(R,S)-2,8-bis­(tri­fluoro­meth­yl)quinolin-4-yl](piperidin-2-yl)methanol methanol monosolvate crystallizes in the I4₁/acd space group. The X-ray crystal structure determination revealed that O—H⋯O, N—H⋯O and O—H⋯N hydrogen bonds are involved in the inter­molecular forces of attraction. This is supported by Hirshfeld surface analysis. The X-ray crystallographic data are supported by DFT calculations.

Crystal structure and Hirshfeld surface analysis of 3-[(E)-2-(2-bromo-4,5-di­meth­oxy­phen­yl)ethen­yl]-5,5-di­methyl­cyclo­hex-2-en-1-one

The crystal packing of the title compound, C₁₈H₂₁BrO₃, is consolidated by C—H⋯O hydrogen bonds, which form inversion dimers with R₂²(24) graph-set motifs.

Isotypism and phase transitions of (NH₄)M(HSO₄)(SO₄)(H₂O)₂ (M = Fe, Co and Ni) compounds

The (NH₄)M(HSO₄)(SO₄)(H₂O)₂ (M = Fe, Co, Ni) compounds are isotypic and exhibit a phase transition from an ordered crystal structure at T = 100 K to a disordered crystal structure at T = 296 K.

Synthesis, crystal structure and thermal properties of N′-[(E)-3,5-di-tert-butyl-2-hy­droxy­benzyl­idene]-2-hy­droxy­benzohydrazide ethanol quatersolvate

The structure of the title compound, 4C₂₂H₂₈N₂O₃·C₂H₆O, exhibits a one-dimensional pore structure composed of channels formed by mol­ecules having an acyl­hydrazone segment connecting a 3,5-di-tert-butyl­phenol unit and a 2-hy­droxy­phenol unit. The channels contain disordered ethanol mol­ecules.

A flexible MOF formed from Cu^II and 2,3-di­hydroxy­terephthalic acid

The crystal structures of a flexible metal–organic framework based on Cu^II and 2,3-dhtp in different states of solvation are reported.

Crystallographic and spectroscopic characterization of 2-bromo-p-tolu­aldehyde

The mol­ecule of the title halogenated benzaldehyde derivative contains an aldehyde moiety, ortho bromine, and para methyl group. Packing via van der Waals forces, the mol­ecules are arranged with both offset face-to-face and an edge-to-face π-stacking inter­action revealed by Hirshfeld surface characterization.

Cr₅B₃ with the Shastry–Sutherland lattices

The structural parameters of penta­chromium triboride, Cr₅B₃, with Shastry–Sutherland lattices were refined based on single-crystal X-ray diffraction data. Cr₅B₃ crystallizes in the space group I4/mcm (No. 140). The present study succeeded in refining the positional and anisotropic atomic displacement parameters of the Cr and B atoms.

Crystal structures of trans-di­bromido­bis­(3,5-lutidine)gold(III) tribromide and three 3,5-lutidinium salts containing tetra­bromido­aurate(III) anions (including three cases of polymorphism)

Mol­ecular structures and packing diagrams of four systems involving 3,5-lutidine and gold(III) centres are analysed in terms of hydrogen bonds, halogen bonds, coinage bonds and stacking inter­actions.

Synthesis, crystal structure, and Hirshfeld surface analysis of undeca­carbon­yl{tris­[4-(methyl­sulfan­yl)phen­yl]arsine}-triangulo-triosmium(0)

The title compound comprises a triangle of Os atoms, two of which are bonded to four carbonyl ligands. The third Os atom is bound to three carbonyl ligands, and the arsine ligand [As(C₆H₄SCH₃)₃] occupies the equatorial position. In the crystal, the mol­ecules are linked by C—H⋯O hydrogen bonds.

Syntheses and crystal structures of three tri­phenyl­sulfonium salts of manganese(II), iron(III) and cobalt(II)

The crystal structures of three salts of the tri­phenyl­sulfonium cation, C₁₈H₁₅S⁺, namely bis­(tri­phenyl­sulfonium) tetra­chlorido­manganate(II), tri­phenyl­sulfonium tetra­chlorido­ferrate(III) and bis­(tri­phenyl­sulfonium) tetra­chlorido­cobaltate(II) are reported.

Crystal structures of 3,4,5-tri­phenyl­toluene and 3,4,5-tri­phenyl­benzyl bromide

The crystal structures of 3,4,5-tri­phenyl­toluene and 3,4,5-tri­phenyl­benzyl bromide are described, the former of which crystallizes in two polymorphic forms.

Crystal structure and Hirshfeld surface analysis of 1-[(benzyl­dimethyl­sil­yl)meth­yl]-1-ethyl­piperidin-1-ium ethane­sulfonate. Corrigendum

Corrigendum to Acta Cryst. (2022), E78, 135–139.