Hexasodium tetra­hydrogen bis­(tri­aquanickelo)icosatungstodibismuthate(III)(10 –) 36-hydrate

The anion in the title compound, prepared in aqueous solution from Ni²⁺ and preformed [Bi₂W₂₂O₇₄(OH)₂]^12–, is identical to the anion obtained as the Na₁₀ salt from Bi³⁺, WO₄^2– and Ni²⁺ [Rodewald & Jeannin (1998). C. R. Acad. Sci. Ser. IIc, 1, 175–181].

trans-Di­chlorobis(methyldi­phenylphosphine-P)palladium(II)

The title compound, trans-[PdCl₂(PPh₂Me)₂], was obtained serendipitously. The Pd atom lies on an inversion center, with distances Pd—Cl of 2.3045(9) and Pd—P of 2.3306(12)Å, and a Cl—Pd—P angle of 89.72(3)°.

Redetermination of bis­[(acetato-O,O')bis­(tri­phenylphosphine-P)silver(I)] monohydrate sesqui­ethanol solvate

The structure of the title compound has been redetermined and shown to be a mixed water–ethanol solvate rather than the hydrate reported previously [Ng & Othman (1997). Acta Cryst. C53, 1396-1400].

(Nitrito-O,O')bis­(tri­phenylphosphine-P)silver(I)

In the unsolvated crystal structure of the title compound, the nitrito ligand is symmetrically bonded to the silver ion, in contrast to the unsymmetrical coordination reported previously for the dichloromethane solvate.

Tri­carbonylbis(1,2,3-tri­phenyl-1,3-di­aza­allyl)tungsten(IV)

In the title compound, the metal center has a distorted pentagonal–bipyramidal geometry, with angles in the pentagonal plane ranging from 70.5(1) to 149.2(1)°. The W—C bond lengths are in the range 1.991(3)–1.999(3)Å, and the W—N bond lengths are in the range 2.149(2)–2.215(3)Å. The six phenyl rings have average C—C bond lengths ranging from 1.382(5) to 1.390(5)Å.

(–)-3-p-Menthyl tosylate

The title compound, 2-isopropyl-5-methyl-cyclohexyl toluene-4-sulfonate, belongs to the group of cyclohexane benzenesulfonates. In this group of compounds, the torsion angle between the two rings never has a trans conformation.

Ethyl 4-allyl-4-oxo-1,2,3,4-tetra­hydroquinoxalin-2-yl­idene­acetate

The title compound contains a quinoxaline ring system, which is used as a building block for colourants, stabilizers in the food industry, bactericides and tranquilizers.

Di­ethyl 2-anthracen-9-ylmethylenemalonate

The title compound contains an anthracene ring system with an ethylene group attached at position 9. The angle between the aromatic ring system and the ethylene moiety is 68.06(5)°.

(1H-Imidazol-2-yl)phenyldiazene

The title compound exists as the trans isomer. The dihedral nobreak angle between the phenyl and imidazole rings is 18.4(1)° and the N=N bond distance is 1.258(2)Å. In the solid state, N—H⋯N intermolecular hydrogen bonds link the molecules to form an infinite one-dimensional chain along the [101] direction.

5-Hydroxycyclo­octanone O-methyloxime at 293K

The title compound belongs to the family of 5-substituted cyclooctanone derivatives having a boat–chair conformation. The packing is characterized by stacks of hydrogen-bonded dimers.

Di­spiro[2.1.2.1]octane at 103K

In the title strained dispiro compound, the cyclobutane unit is planar. The cyclopropane units are perpendicular to the cyclobutane plane.

2,3,4,5,7,7,8,8,-Octa­fluorobi­cyclo[4.2.0]octa-1,3,5-triene at 125K

The title compound belongs to the family of benzo-annulated cyclobutenes. Perfluorination of 1,2-dihydrocyclobutabenzene leads to essentially the same geometry as the parent hydrocarbon. Bond localization due to the Mills–Nixon effect in the direction of one of the Kekule forms cannot be found.

6-Chloro-1H-2,3,4,5-tetra­hydroazepino[3,2-c]quinoline

The title compound was obtained by reaction of pyrido[2,1-c][1,4]benzodiazepine in boiling phosphorus oxychloride with a catalytic amount of pyridine under microwave heating. Its structure determination establishes the mechanism of the reaction, which was otherwise uncertain.

1α,4α,4aβ,9β,10β,10aβ-Hexa­hydro-9,10-epi­thioanthracene-1,4-diol

The title molecule is U-shaped. The molecules are connected by O—H⋯S and O—H⋯O hydrogen bonds to give a two-dimensional network.

2,4-Bis(tri­phenylphosphino)-closo-decaborane–di­chloro­methane (1/1)

The title compound, 2,4-(PPh₃)B₁₀H₈^.CH₂Cl₂, has a closo-decaborane framework in which two triphenylphosphine groups substitute two equatorial H atoms, with B—P bond lengths of 1.927 (4) and 1.910 (4) Å.

4-[3-(4-Iodo­phenylmeth­oxy)propyl]-1H-imidazolium hydrogen maleate (iodoproxyfan hydrogen maleate)

The title compound crystallizes as a salt with hydrogen maleate. The iodoproxyfan cation is nearly planar and it forms N—H⋯O hydrogen bonds with two neighbouring hydrogen maleate anions.

(RS,SR)-N,N'-Bis(2-hydroxybenzyl)-1,2-di­phenylethylenedi­amine

The title compound, 2,2^'-[(RS,SR)-3,4-diphenyl-2,5-diazahexamethylene]diphenol, which is a tetradentate Schiff base ligand, was prepared and the structure determined in order to investigate the conformation in a metal-free condition. In the crystals, the molecule has a center of symmetry and there is an intramolecular O—H⋯N hydrogen bond within each salicylideneimine unit.

L-Menthyl ester of highly estrogenic (–)-(Z)-bis­dehydrodoisynolic acid 3-methyl ether

The X-ray structure of highly estrogenic (–)-(Z)-bisdehydro- doisynolic acid, obtained via the L-menthyl ester of its 3-methyl ether, i.e. L-menthyl (–)-(1R,2S)-1-ethyl-7-methoxy-2-methyl-1,2,3,4-tetrahydrophenanthrene-2-carboxylate, shows that its configuration is 1R,2S and its three fused rings are nearly coplanar.

Gd₃GaO₆ by X-ray powder diffraction

Gd₃GaO₆ is isostructural with Er₃GaS₆ (Cmc2₁). It contains distorted GaO₄ tetrahedra and Gd atoms are in two sites of sevenfold coordination.

SrFeP₂O₇, a new homologue in the AMP₂O₇ series

Strontium iron diphosphate was obtained from hydrothermal synthesis and its structure determined by single-crystal X-ray diffraction analysis. The main crystallographic feature is the 4+1 square-pyramidal coordination polyhedron around the Fe atom. The structure is built up from corner-sharing [FeO₅] pyramids and [P₂O₇] bitetrahedral units.

Ta₅Sb₄

Ta₅Sb₄ adopts the Ti₅Te₄ structure type, which consists of chains of vertex-sharing Ta₆Sb₈ face-capped octahedra.

Strontium tetramolybdate dihydrate, SrMo₄O₁₃^.2H₂O

SrMo₄O₁₃^.2H₂O is built up from layers of edge- and vertex-sharing MoO₆ and MoO₅ groups. Inter-layer Sr²⁺ cations and water molecules complete the structure, which is isostructural with that of BaMo₄O₁₃^.2H₂O.

μ-Oxo-bis­[N,N'-ethylenebis(2-thioacetophenonidenimine)iron(III)]

Bis(μ-3,7-di­ethyl-3,7-di­azanonane-1,9-di­thiolato)dimanganese(II)

catena-Poly[[[di­aqua(pyridine-2-carboxamide-N¹,O)copper(II)]-μ-(sulfato-O:O')] monohydrate]

[Bis(di­phenylphosphino)methane]dinitratopalladium(II) tris­(deuterio­chloroform) solvate

[N(CH₃)₄]₄H₁₂Ge₉O₂₆^.14H₂O

The {Ge₉O₁₄(OH)₁₂}^4- cluster contains a central GeO₆ octahedron corner-linked to four GeO₄ tetrahedra, which are in turn corner-linked to an adjacent tetrahedron and a GeO₅ trigonal bipyramid. Each of the four trigonal bipyramids shares a common edge with another, and one vertex of each edge is connected to the central octahedron.

Complexe de cuivre(II) di­amino-1,2-(cyclo­hexane diacétatodiacétique) trihydrate

Tris(ethylenedi­amine-N,N')nickel(II) tetra­thiomolybdate

1,1'-Bis(3-phenylquinoxalin-2-yl)ferrocene di­chloro­methane solvate

The oxotungsten(IV) complex [WOCl(Ph₂PCH₂CH₂PPh₂)₂]PF₆^.CHCl₃

Zinc(II) complexes of bidentate Schiff base ligands containing methoxyphenyl and nitro­phenyl groups

Bis{(μ-acetato)[μ-bis­(salicyl­idene)-1,3-propanediaminato]copper(II)}copper(II) dioxane solvate

Copper(II) 2-thiopheneglyoxylate adducts with pyridine derivatives

μ-Oxo-bis­{bis­[2,2'-bi(1H-imidazole-N³)]oxorhenium(V)} tetrachloride hexahydrate

K₂[MoO₃(C₂O₄)]^.H₂O

Coordination complexes of tri­phenyltin coumarin-3-carboxylate with O-donor ligands: (coumarin-3-carboxylato)tri­phenyltin–L (L = ethanol, di­phenylcyclopropenone and quinoline N-oxide) and bis­[(coumarin-3-carboxylato)tri­phenyltin]–L (L = tri­phenylphosphine oxide and tri­phenylarsine oxide)

Monooxovanadium(V) complexes with bidentate N-phenylbenzo­hydroxamate

A one-dimensional coordination polymer of manganese(II) with N-(2-hydroxyethyl)iminodi­acetate: {[Mn(Hheidi)(H₂O)]^.H₂O}_n

5-(8,8-Di­cyanoheptafulven-3-yl)-2-hy­droxy-1,3-xylyl-18-crown-5 potassium salt monohydrate

Potassium methoxyacetate tetrahydrate

Potassium methoxyacetate tetrahydrate forms a network complex in which the K atoms are nine-coordinate.

Chloro(di­ethyl di­thiophosphato-S,S')(tri­phenylphosphine-P)palladium(II)

trans-Di­aqua(C-meso-1,5,8,12-tetra­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-κ⁴N)nickel(II) dichloride

trans-Di­aquabis(benzoato-O)bis­(nicotinamide-N¹)cobalt(II)

Caesium 5-(2-cyano­ethylthio)-2-thioxo-1,3-di­thiole-4-thiolate

Tetra­kis­(tetra­butylammonium) tetra­kis­[(p-cyano­phenyl)trioxoarsonato]tetratriacontaoxododecamolybdate(4 –)

Aquadiiso­thio­cyanato(N,N,N',N'-tetra­methylethylenedi­amine-N,N')copper(II)

Di­aquabis(pyridazin-1-ium-3,6-di­carboxylato-N²,O³)copper(II) dihydrate

(1-Phenyl-1H-1,2,3,4-tetrazole-5-thiolato-S)bis­(tri­phenylphosphine)silver(I) methanol solvate

[3,3'-Iminobis(N,N-di­methylpropylamine)](4'-methoxyflavonolato)zinc(II) perchlorate, [Zn(4'-MeOfla)(idpaH)]ClO₄

Diosbulbin B, a constituent of Dioscorea pentaphylla

3-Cyano-5-(4-methoxybenzyl)-6-(4-methoxyphenyl)-4-methylthio-2H-pyran-2-one

(±)-3-Oxo-1,2,3,9,10,10a-hexa­hydro­phenanthrene-10a-carboxylic acid: catemeric hydrogen bonding in a δ-keto acid

Santonic acid: catemeric hydrogen bonding in a γ,∊-diketo carboxylic acid

(±)-1-Indanone-2-acetic and -2-propionic acids: catemeric versus dimeric hydrogen bonding in homologous γ- and δ-keto acids

Bis(di­propylthiocarbamoyl) di­sulfide

p-Hydroxybenzaldehyde nicotinoylhydrazone monohydrate

Tamarixetin monohydrate

2-Acetylamino-6-methylpyridine N-oxide monohydrate

3-(2-Chloro­phenyl)-4-phenyl-1,2,4-triazole-5-thione

2-Amino­pyrimidine–fumaric acid cocrystal

5,10-Di­meth­oxy-1,4-methano-1,4,4a,11a-tetra­hydrobenzo[b]fluoren-11-one oxime

2-Benzoyl-1-naphthyl benzoate

2-Hy­droxy-5-methyl-2-oxo-6-phenyl-4-phosphono­methyl-1,4,2-oxazonia­phosphorinane

1,3,4,6-Tetra­thia­pentalene-2,5-dione

Redetermination of 2,3-di­chloro-5,6-di­cyano-1,4-di­hydroxybenzene

N-Propylimidazolidinetrione and N-methyl-N'-phenylethylimidazolidinetrione

3,3,6,6-Tetra­methyl-9-(3-nitro­phenyl)-3,4,5,6,9,10-hexa­hydroacridine-1,8(2H,7H)-dione

Methyl 4β-bromo-7α-cathyl­oxy-3-oxo-5β-cholanoate

(25R)-6β-Acet­oxy-3β-bromo-5α-spirostan-23-one

N⁶-Anisoyladenosine monohydrate

N³-Benzoyl-2',3'-di-O-benzoyluridine

2'-O-Tosyladenosine

2-Bromo-2,3-di­phenylmethano-2,3-di­hydro­naphtho­quinone

Absolute structure of an N-pentenoyl benziso­thiazole

(R)-N-(1-Hydroxybut-2-yl)pyrrolidine-2,5-dione

(+)-cis-3-Hy­droxy-2-(4-methoxyphenyl)-4-oxo-2,3,4,5-tetra­hydro-1,5-benzo­thiazepine 1-oxide

3-Methyl-1-(1,2,3,4-tetra­hydroisoquinolin-2-ylcarbonyl)imidazolium iodide

1,2-Bis[2-(pyridin-2-yl­oxy)eth­oxy]benzene

A new strained angularly fused ring system: 8-hy­droxy-1,2,3-tri­methoxybenz[a]anthracene-7,12-dione

Spiro[1-azabi­cyclo[5.3.0]decane-6,2'(5'H)-furan]-5',10-dione: an example of kryptoracemic crystallization

N,N-Bis(p-nitro­phenylsulfonyl)cyclo­hexylamine

ap-9-(o-tert-Butylphenyl)-9-methylthiofluorene, the first isolated ap rotamer of a 9-substituted 9-(o-tert-butylphenyl)fluorene

2,2'-Di­bromobi­phenyl

(E)-Di­methyl 4-iso­propyl-3-[tris­(tri­methylsilyl)silylmethylene]-1,1-cyclo­hexanedi­carboxylate

FF-β-D-Arabino­furanosyluracil

2-Ethylthio-9-methyl-1,4-di­hydroacridine-1,4-dione and 9-methyl-2-(4-tolylthio)-1,4-di­hydroacridine-1,4-dione

N,N'-Bis(2-ammonio­ethyl)oxamide diperchlorate

3,17-Dioxo-4-oxaandrostane-5α-carbaldehyde

2-(N,N-Di­methylamino)-6-hy­droxy-1,4-naphtho­quinone

A fused furanoside-1,4-lactone at 173K

Amino-11-undecanoic acid cyclic dimer hydrochloride

3-Tri­phenylphosphoniopropionate dihydrate

Butyldi­chloro(phenylethynyl)tellurium(IV)

Methyl (2S)-2-[(5R)-3,5-di­phenyl-4,5-di­hydro-1,2,4-oxa­diazol-4-yl]-3-phenylpropanoate

3,5-Di-tert-butyl-1,2-benzo­quinone

1-Chloro-2,4-di­morpholino-5-nitro­benzene

Two novel optically active penam derivatives

Acefluoranthylene

Methyl 1,4,5,6-tetra­hydro-2-methyl-4-(2-nitro­phenyl)-6-oxo­pyridine-3-carboxylate

Polysulfonylamines. CX. Hydroxylammonium di(methane­sulfonyl)amidate 1,4,7,10,13,16-hexaoxa­cyclo­octa­decane (1/1/1) and 2-aminopyridinium di(methane­sulfonyl)amidate 1,4,7,10,13,16-hexaoxa­cyclo­octa­decane (1/1/1)

2-(2,3-Di­phenylpiperazin-1-yl)ethylammonium chloride

L-Leucyl-L-leucine 2-methyl-1-propanol solvate

4,4'-Bi­pyridyl at 203K

N-(2,2-Di­methoxyethyl)-N-{9-methoxymethyl-1,2,3,4-tetra­hydro­spiro[carbazole-1,2'-[1,3]di­thiolan]-4-yl}benzamide

4-(4-Methylbenzoyl)-6-(4-methylbenzyl­idene)-3-phenyl-2-oxa-3-azabi­cyclo[3.3.0]oct-7-ene

A flavone 1,4-di­hydro­pyridine calcium antagonist

Nitrate salt of protonated 2-(di­ethylamino­methyl)phenol

tert-Butylammonium hydrogen phenyl phosphate

7,11b-Di­hydro-9,10-di­meth­oxy-3,11b-di­phenyl[1,2,4]oxa­diazolo[5,4-a][2,3]benzodiazepin-6(5H)-one

(1S,R_S)-6,7-Di­meth­oxy-N-methyl-1-(p-tolylsulfinylmethyl)-1-tri­fluoro­methyl-1,2,3,4-tetra­hydroiso­quinoline

1-Acetyl-2-(3,3-di­methyl-2-butyl­idene)hydrazine: a monoclinic crystal structure with local orthorhombic pseudosymmetry

1-Methyl-4-(N-methylnitramino)pyridinium bromide

4-(4-Bi­phenyl)-2,3,5,6-tetra­fluoro­pyridine, a new material for application in light-emitting diodes

Ethylenebis(phosphonic acid)

A Schiff base formed from sulfanilic acid and di­methylformamide

Tri-p-tolyl-1,3,5-triazine