Tris(1,3-di­amino­propane-N,N')nickel(II) diperchlorate

The nickel octahedron of the title compound is slightly distorted, with an average Ni—N distance of 2.146(13)Å.

μ-1,3-Imidazolyl-κN:κN'-bis­[(di­ethylenetriaminato-κ³N)copper] triperchlorate hydrate

The title compound consists of two identical [Cu(dien)]⁺ cations [dien is diethylenetriaminate(1−)] bridged by an imidazolyl ligand, three ClO₄⁻ anions and one water molecule. In the cation, the two Cu atoms are six-coordinate, being also bonded in a (4+2^') fashion to perchlorate O atoms. The distance between the two Cu atoms is 5.889(2)Å.

Bis(μ-azido-κN¹:κN¹)bis­{[2-(1,5-di­aza­cyclooct-1-yl-κ²N,N'-methyl)phenolato-κO]copper(II)}

The title compound has centrosymmetric Cu dimers linked by two end-on azido bridges. Each Cu atom has the five-coordinated geometry of a distorted trigonal bipyramid. The bridging azide anions are bound asymmetrically to copper at distances of 2.174(3) and 2.215(3)Å. The Cu⋯Cu distance is 3.129 (2) Å.

Sodium hydrogen bis­[di­chloro(di­hydrogen ethylenedi­amine­tetra­acetato-O,N,N',O')ruthenium(III)] nonahydrate

The asymmetric unit of the title compound contains two independent molecules, one Na atom and nine water molecules. The Ru^III atom is tetracoordinated by the ethylenediaminetetraacetate (edta) ligand through two N and two carboxylate O atoms. The other two carboxylate groups of edta are free. The remaining two coordination positions of ruthenium(III) are occupied by Cl atoms.

(S,S)-Ferrocenyl[methyl(1-phenylethyl)amino]aceto­nitrile

The cyano and dialkylamino substituents in the title compound lie endo and exo with respect to the substituted ring plane. Data were collected using synchrotron radiation due to the small size of the only good quality crystal available.

A redetermination of bis­(2-amino­methylpyridine)diperchloratocopper(II)

The crystal structure of the title compound has been redetermined. It crystallizes in space group P1, which is the main difference from the previous determination [O'Connor, Eduok, Owens & Stevens (1986). Inorg. Chim. Acta, 117, 175–181].

5-Ethyl-2-phenyl-1-(2,4,6-tri­chloro­phenyl)-3-tri­fluoro­methyl-1H-1,2,4-triazolium hexa­chloro­antimonate

The title compound has interesting biological activity. The three rings in the molecule are planar, with dihedral angles between their least-squares planes of 74.17, 65.15 and 90.69°. In the triazolium ring, the C—N bond lengths are almost equal, with values ranging between 1.315 and 1.340Å; this is due to π interaction.

7-Amino-2,3-di­hydro-5H-thiazolo[3,2-a]pyrimidin-5-one

The molecules of the title compound form a two-dimensional network linked by 8 and 24 hydrogen-bonded rings.

N,N'-Di­benzene­sulfonylputrescine

The title compound, N-4-[(benzenesulfonyl)amino]butylbenzenesulfonamide, is useful in the synthesis of natural or unnatural polyamine derivatives. The molecule is centrosymmetric with a straight-chain alkane core, and N—H⋯O intermolecular hydrogen bonds link the molecules into an infinite two-dimensional network.

3β,4β-Ep­oxy-7-oxo-7a-oxa-7a-homo-5β-cholan-24-oic acid

In the title compound, the epoxy O atom is β-oriented. The presence of the epoxy group disturbs the chair conformation in ring A of the steroidal nucleus. Ring A has a half-chair conformation. The seven-membered B-ring conformation is midway between chair and twist-chair. The A/B junction is cis, and the B/C and C/D junctions are both trans. The molecules are held together by intermolecular O—H⋯O hydrogen bonding, forming a zigzag chain along the [010] direction.

(25R)-3β-Bromo-5α-spirostan-6,23-dione

In the title compound, the Br atom is β-equatorially oriented. The six-membered rings (A, B, C and F) have the expected chair conformations. The D-ring conformation is midway between a 14α-envelope and a 13β,14α-half-chair, and the E-ring conformation is midway between an O2α-envelope and a C21β,O2α-half-chair. The packing of the molecules is assumed to be mainly dictated by van der Waals forces. The closest intermolecular contact between non-H atoms is 3.300(9)Å.

(E)-2-[2-(4-Chloro­methylphenyl)vinyl]-1-methyl-5-nitro-1H-imidazole

In the crystal structure of the title compound, the five- and six-membered rings, together with the nitro substituent, are almost in the same plane. The torsion angle around the bond linking the aromatic ring and the Cl atom is 128.1(3)°.

cis-4,4-Di­methyltri­cyclo[6.3.0.0^1,7]undecane-2,6-dione

The title compound was obtained as a by-product in the chlorination of a C₅–C₈ fused-ring compound. The formation of a cyclopropane ring, expected from ¹H NMR spectroscopic analysis, was confirmed. The junction at the C—C bond between the seven- and three-membered rings is cis.

3-Bromo-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (I), 5-bromo-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (II), 3,5-di­bromo-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (III), and 1,7-di­bromo-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (IV)

The structures of the four title compounds, C₁₂H₁₇BrO₂, (I), C₁₂H₁₇BrO₂, (II), C₁₂H₁₆Br₂O₂, (III), and C₁₂H₁₆Br₂O₂, (IV), which were obtained from the bromination of trans-4-methylbicyclo[6.3.0]undecane-2,6-dione, have been determined. The eight-membered rings in compounds (I)–(IV) take the boat–chair form.

BaNi₂(PO₄)₂

The crystal structure of the title compound, barium dinickel(II) bis(phosphate), is isostructural with BaNi₂(AsO₄)₂, BaNi₂(VO₄)₂ and BaCo₂(PO₄)₂. It is made up of dodecacoordinated barium ions, NiO₆ octahedra and PO₄ tetrahedra.

Tieftemperaturstruktur von di­aqua­hydrogen(1+) hexa­chloro­antimonat, H₅O₂^+.SbCl₆⁻

The cations and anions in the title compound are linked by hydrogen bonds to form 12-membered rings. The O⋯O distance [2.400 (3) Å] in the H₅O₂⁺ cation indicates a strong hydrogen bond. The anion, with formal inversion symmetry, has an almost regular octahedral structure.

Di­chloro(2,3,6,8,11,12,15,17-octa­methyl-5,9,14,18-tetra­azadibenzo[a,h]cyclo­tetradecene-κ⁴N)zirconium(IV) tetra­hydro­furan hemisolvate

Bis[N-benzoyl-N'-(2-pyridylmethylene)hydrazine]trinitratocerium(III) acetone dihydrate

Polymeric aqua-1κO-bis­[μ-(R,R)-tartrato-1κ²O¹,O²:2κ²O³,O⁴]dicadmium(II) trihydrate

Bis[iodo(N,N,N',N'',N''-penta­methyldi­ethylenetri­amine-κ³N)platinum(II)] di-μ-iodo-bis­[di­iodoplatinate(II)]

(2,2'-Bi­pyridine-N,N')(7-oxabi­cyclo[2.2.1]heptane-2-exo,3-exo-di­carboxylato-κ³O^2,3,7)manganese(II)–7-oxabi­cyclo[2.2.1]heptane-2-exo,3-exo-di­carboxylic acid–water (1/1/1)

Cadmium iso­propylxanthate

[1,3-Bis(pyridine-2-carboxamido)propane]palladium(II) monohydrate and its nickel(II) analogue

Di­chloro(2,6-diiso­propylaniline-N)(η⁵-penta­methylcyclo­pentadienyl)rhodium(III)

cis-(Nitrato-O,O')[(1RS,4SR,5SR,8RS,11SR,12SR)-C-rac-1,5,8,12-tetra­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-κ⁴N]nickel(II) nitrate

A W–Ag–Se cluster compound: (μ₃-bromo)(μ₃-tetraselenidotungstide)tris­(tri­phenylphosphinesilver) ethanol solvate, [(μ₃-Br)(μ₃-WSe₄)(AgPPh₃)₃]^.EtOH

Di­chloro{2-[(η⁵-cyclo­pentadienyl)phenylmethyl]phenolato-O}titanium

A copper(II) dimer: aqua(μ-2,2'-bi­pyrimidine-N,N')(perchlorato)bis­{[2,6-bis­(2-pyridyl)pyridine-N,N',N'']copper(II)} triperchlorate

Salts of the bis­(catecholato)borate anion with rhodium– and iridium–phosphine complex cations

Barium L-tartrate

[Tris(2-pyridyl-κN-methylene­amino-κN-ethyl)amine-κN]manganese(II) diperchlorate

catena-Poly[tri­phenyltin-μ-(N,N-di­ethylthiocarbamoylthio­acetato-O:O')], catena-poly[tri­phenyltin-μ-(N-methyl-N-phenylthiocarbamoylthio­acetato-O:O')] and tri­phenyl(N,N-tetra­methylene­thiocarbamoylthio­acetato-O)tin

6-Acetylamino-5-(di­acetylamino)pyrimidine-2,4(1H,3H)-dione

2,2'-Biphenol–1,10-phenanthroline (1/1): a two-dimensional structure built up from three types of hydrogen bond and π–π stacking interactions

Polysulfonylamines. CIX. 1,2,4-Triazolium di(methane­sulfonyl)amidate

Heterocycle-substituted [2.2]para­cyclophanes

A racemic strigol analogue at 100K

Two novel 3,4-disubstituted 1,2,4-oxa­diazole-5(4H)-thiones

N-Methyl-2'-nitrocinnamanilide

Pipemidic acid hydrochloride

2,2-Bis(2-methoxyphenyl)-4-methyl-8,9-ep­oxy-7,8,9,10-tetra­hydro-2H-benzo[h]chromene

4-(p-Methoxyphenyl)-3,5-bis­(2-pyridyl)-4H-1,2,4-triazole

2-Ethyl-2-(3-oxo­butyl)cycloheptane-1,3-dione

5a,6,9,9a-Tetra­hydro-4-hy­droxy-6,9-methano-5H-fluoreno[2,3-b]furan-5-one and 5a,6,9,9a-tetra­hydro-6,9-methano-4-meth­oxy-5H-fluoreno[2,3-b]furan-5-ol

6,11-Di­hydroxy-1,4-methano-1,4,4a,12a-tetra­hydronaphthacene-5,12-dione

5-Benzyl­oxy-1-phenyltetrazole: catalytic transfer hydrogenolysis of benzyl ethers

12-Formyl-9,10-di­methyl-9,10-di­hydro-11-thia-9,10-ethanoanthracene

2,4,4,6,6-Penta­chloro-2-(2,6-di-tert-butyl-4-methylphen­oxy)cyclo-2λ⁵,4λ⁵,6λ⁵-triphosphazatriene

10β-Hy­droxy-6α-(3,4,5-tri­methoxyphenyl)-2,3,6,6aα,7,9,9aβ,10-octa­hydroisobenzofuro[5,6-g][1,4]benzodioxin-7-one

Androst-4-ene-3,6,17-trione

1,11-Undecanediol

Tautomerism in a 2,4-di­chloro­benzenesulfonamide derived from 2-amino-4-(2,5-di­methoxyphenyl)thiazole

(+)-(2R-cis)-Di­methyl(10-bromo-2,3,3a,8-tetra­hydrodibenz[c,f]isoxazolo[2,3-a]azepin-2-ylmethyl)amine

The highly solvated structure of theonellapeptolide Id, a tridecapeptide lactone from the Okinawa marine sponge Theonella swinhoei

3-[2-(1,3-Dioxolan-2-yl)ethyl]-2-methylbenzoic acid

Capped-porphyrin precursors

(1'R,2'R)-3-[(cis-2'-Cyclo­hexylmethylcyclo­pentyl)imino]-2-azabi­cyclo[2.2.2]octane hydrobromide, a hypoglycaemic semicyclic amidine

Imide and tri­benzyl ester derivatives of Kemp's triacid

3-Phenyl-1-(2-pyridyl)thiourea

7-Hy­droxy-4-(4-methoxyphenyl)-3,4-di­hydrocoumarin

A chain of fused R²₂(10) and R⁴₆(12) rings in the hydrogen-bonded structure of 1,4,8,11-tetra­aza­cyclo­tetra­decane–2,2'-biphenol (1/2)

(E)-3-(Benzoylmethylene)-N-methylisoindolin-1-one

2H-Dibenzo[b,f]azepin-2-one

2-Amino-4-phenylthiazole

A functionalized di­methyl maleate (maleic acid di­methyl ester)

4-Chloro-N-(p-fluoro­benzyl)-2-nitroaniline

A new 14:15-seco-15-norpregnane derivative from Mandevilla illustris Woodson (Apocynaceae)

4-Nitramino-1,2,4-triazole