catena-Poly[[di­aqua­bis­[1,4-bis­(pyridin-4-yl)buta-1,3-diyne-κN]iron(II)]-μ-cyanido-κ²N:C-[dicyan­ido-κ²C-platinum(II)]-μ-cyanido-κ²C:N]

The mol­ecular structure of the title compound, [FePt(CN)₄(C₁₄H₈N₂)₂(H₂O)₂]_n, consists of one-dimensional polymeric [–Fe–NC–Pt(CN)₂–CN–]_∞ chains. Two water mol­ecules and two monodentate 1,4-bis­(pyridin-4-yl)buta-1,3-diyne (bpb) ligand mol­ecules complete the octa­hedral coordination sphere of the Fe^II atoms. The water mol­ecules are hydrogen bonded to either bpb ligands or cyanide groups of the planar [Pt(CN)₄]²⁻ anion of adjacent polymeric chains.

[(1,2,5,6-η)-Cyclo­octa-1,5-diene](1-ethyl-3-iso­propyl-1,3-imidazol-2-yl­idene-κC²)(tri­phenylphosphane-κP)iridium(I) tetra­fluorido­borate

In the title compound, iridium adopts a distorted square-planar geometry and is coordinated to cyclo­octa­diene, a triphenyl phosphane, and a N-heterocyclic carbene ligands in the cationic complex with tetra­fluorido­borate as the counter-anion.

catena-Poly[[tri­methyl­tin(IV)]-μ-methyl­phenyl­phosphinato-κ²O:O′]

In the title linear polymeric structure, the Sn atom is five-coordinated by three methyl C atoms and two methyl­phenyl­phosphinate O atoms in a distorted trigonal–bipyramidal geometry.

Two-dimensional structure of poly[[[μ₂-1,4-bis­(pyridin-4-yl)butane]­bis­(μ₄-penta­nedioato)dicopper(II)] aceto­nitrile disolvate]

Glutarate ligands bridge dinuclear Cu₂ units to form one-dimensional chains and 1,4-bis­(pyridin-4-yl)butane ligands connect these chains to form a two-dimensional layer structure. Carboxyl­ates of a glutarate ligand bridge two copper(II) ions, forming a paddle-wheel-type Cu₂(CO₂)₄ dinuclear secondary building unit.

catena-Poly[[tri­methyl­tin(IV)]-μ-3,4-di­fluoro­benzene­seleninato-κ²O:O′]

In the polymeric chain structure of the title compound, {(Me₃Sn)[C₆H₃F₂(SeOO)]}_n, the Sn^IV atom adopts a distorted trigonal–bipyramidal coordination environment.

Di-μ-chlorido-bis­{bis­[N,N-bis­(tri­methyl­sil­yl)amido]­titanium(III)}

The two Ti^III atoms in the binuclear title compound are each tetra­hedrally coordinated by two bridging Cl atoms and two N atoms of (tri­methyl­sil­yl)amido moieties.

Acetyl­hydroxamic acid

Acetyl­hydroxamic acid can exist in two tautomeric forms, i.e. amide and imide. Each of these forms may be in the form of the Z or E isomer. The title compound is formed by the reaction of acetamide and hydroxyl­amine hydro­chloride. In the crystal, mol­ecules are connected by N—H⋯O and O—H⋯O hydrogen bonds, forming in chains in the c-axis direction.

tert-Butyl (3-oxo­cyclo­pent­yl)carbamate

In the title compound, C₁₀H₁₇NO₃, the five-membered ring is in a slightly twisted envelope conformation. In the crystal, mol­ecules are linked via N—H⋯O hydrogen bonds forming C(4) chains along [001].

tert-Butyl N-[(1R*,2R*,4R*,5S*)-rel-4-tert-but­oxy­bicyclo­[3.1.0]hex-2-yl]-N-hy­droxy­carbamate

In the title compound, C₁₅H₂₇NO₄, the cyclo­pentane ring adopts an envelope conformation with the methyl­ene group as the flap. The dihedral angle between the cyclo­propane and cyclo­pentane rings is 77.54 (13)°. In the crystal, mol­ecules are linked via O—H⋯O hydrogen bonds, forming C(7) chains propagating along [010].

(5R,6R)-rel-9-tert-Butyl-trans-5,6-dimeth­oxy-6,7-di­hydro-5H-benzo­cyclo­heptene

The relative stereochemistry of the title compound, C₁₇H₂₄O₂, has been confirmed by the X-ray analysis. The seven-membered ring is in a pseudo-boat conformation with both meth­oxy substituents in equatorial sites.

(E)-2,4-Di­bromo-6-(hydrazinylidenemeth­yl)phenol

The crystal structure of a di­bromo­hydrazono­methyl­phenol, prepared from di­bromo­hydroxy­benzaldehyde and hydrazine hydrate, is reported.

5-(5-Chloro-2-hy­droxy­benzo­yl)-1-methyl-3-nitro­pyridin-2(1H)-one

In the title compound, the dihedral angle between the planes of the benzene and pyridine rings is 55.30 (13)°. In the crystal, mol­ecules are linked by O—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional framework.

1-Methyl-3-(2-methyl­phen­yl)-4-phenyl-1H-pyrazolo­[3,4-d]pyrimidine

The pyrazolo­pyrimidine unit is slightly twisted while π-stacking inter­actions between pyrimidine moieties form centrosymmetric dimers. Offset π-stacking inter­actions between dimers form chains along the b-axis direction.

2-{3-[2-(2-Chloro­phen­yl)eth­yl]-2-oxo-1,2-di­hydro­quinoxalin-1-yl}acetohydrazide

The di­hydro­quinoxaline moiety deviates from planarity with a dihedral angle of 1.52 (16)° between the constituent rings. In the crystal, zigzag chains are generated by N—H⋯N and N—H⋯Cl hydrogen bonds and are extended into sheets parallel to (100) by N—H⋯O hydrogen bonds.

Ethyl 4-(2,5-di­methyl­phen­yl)-6-methyl-2-sulfanyl­idene-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate

The title compound crystallizes with two mol­ecules in the asymmetric unit, one of which features a disordered ethyl side chain.

cis-Cyclo­hexane-1,3-di­carb­oxy­lic acid–N,N′-(pen­tane-1,5-di­yl)bis­(pyridine-4-carboxamide)–water (1/1/2)

In the hydrated cocrystal of cis-1,3-cyclo­hexa­nedi­carb­oxy­lic acid (H₂cdc) and N,N′-(pentane-1,5-di­yl)bis­(pyridine-4-carboxamide)­pentane (bpcpe), O—H⋯N hydrogen bonding inter­actions produce supra­molecular chains.

2-((E)-{[3-(1H-Imidazol-1-yl)prop­yl]imino}­meth­yl)-4-[(E)-(2-methyl­phen­yl)diazen­yl]phenol

The mol­ecular structure of the title imidazole derivative is reported.

N,N,N-Tris(di­phenyl­phospho­rylmeth­yl)amine

The mol­ecular structure of N,N,N-tris­(di­phenyl­phospho­rylmeth­yl)amine exhibits threefold symmetry which is not reflected in the solid state structure.

N-[2-(Benzyl­idene­amino)­phen­yl]-N′-phenyl­urea

In the crystal of the hybrid imine/urea mol­ecule, N—H⋯O hydrogen bonds link mol­ecules into supra­molecular helical chains parallel to the c axis via an (6) ring motif.

4-(Prop-2-yn-1-ylsulfan­yl)-1H-pyrazolo­[3,4-d]pyrimidine

The asymmetric unit of the title compound contains two independent mol­ecules differing in the orientation of the propargyl side chain.

(3E)-4-(3,4,5-Tri­meth­oxy­phen­yl)but-3-en-2-one

The title compound features dimers linked by four C—H⋯O hydrogen bonds.

(3-Hy­droxy­piperidin-1-yl)(4-methyl­phen­yl)methanone

In the title mol­ecule,the piperidine ring assumes a chair conformation. The dihedral angle between the mean plane of the piperidine ring and the benzene ring is 45.49 (1)°. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, leading to a mol­ecular chain running along the c-axis direction.

(2R,4S,5S)-5-Hy­droxy-4-methyl-3-oxohept-6-en-2-yl benzoate

The title compound, which crystallizes with two mol­ecules in the asymmetric unit, was obtained in the course of the total synthesis of curvicollides A–C and fusaequisin A. It features the relative configuration of the western aldol part of the natural products. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds.

3-Methyl-5,5-di­phenyl­imidazolidine-2,4-dione

The structure of the title imidazolidinedione derivative is reported. The crystal packing is stabilized by N—H⋯O and C—H⋯π(ring) hydrogen bonds.

2-Amino-N-(2-chloro­pyridin-3­yl)benzamide

The title compound is a condensation product of 3-amino-2-chloro­pyridine and ethyl 2-amino­benzoate in which the aromatic rings are almost coplanar [dihedral angle = 2.28 (9)°] and an intra­molecular N—H⋯O hydrogen bond occurs. In the crystal, N—H⋯O and N—H⋯N hydrogen bonds link the mol­ecules into (100) sheets.

(1E,5E)-2,5-Di­bromo­cyclo­dodeca-1,5-dien-9-yne

This compound was prepared by bromination/de­hydro­bromination of E,E,Z-cyclo­dodeca­triene. The crystal is composed of C₂-symmetrical mol­ecules with an E conformation of the bromo­alkene fragments and nearly linear alkyne units. The torsion angles in the ring suggest significant ring strain.

5-[(4-Bromo­benz­yl)­oxy]-4-(4-methyl­benzene­sulfon­yl)-1,3-thia­zole

In the title compound, the mean plane of the thia­zole ring subtends dihedral angles of 3.6 (2) and 79.9 (2)° with the bromo­benzyl and toluyl rings, respectively. In the crystal, short S⋯O contacts [3.012 (3) Å] and aromatic π–π stacking between the thia­zole and toluyl rings [centroid–centroid separation = 3.687 (2) Å] are observed.

Methyl (1-benzamido-2-meth­oxy-2-oxoeth­yl)trypto­phanate

The mol­ecular and crystal structures of a tryptophane derivative are reported. The packing features N—H⋯O hydrogen bonds and N—H⋯π and C—H⋯π inter­actions.