Octasodium hexatungstomanganate(IV) octadecahydrate

The single-crystal structure of the title compound shows the anion to have the Anderson structure based on six WO₆ octahedral edge-sharing units surrounding a central MnO₆ octahedron. Varying interactions from the O atoms of the MnO₆ octahedron to surrounding water mol­ecules result in differences in the Mn—O distances.

The structures of the α-alums RbCr(SO₄)₂·12H₂O and CsCr(SeO₄)₂·12H₂O at 293 and 12 K

Precise X-ray structural determinations of two Cr³⁺ α-alums are presented, each at 293 and at 12 K.

Cs₂K[Mn(CN)₆] at 293, 85 and 10 K

Precise X-ray structural determinations of Cs₂K[Mn(CN)₆] at 293, 85 and 10 K have been performed. The centrosymmetric [Mn(CN)₆]³⁻ anion has very close to regular octahedral stereochemistry.

K₂TiSi₃O₉·H₂O

The structure of dipotassium titanium trisilicate hydrate has been refined and the hydrogen-bonding geometry elucidated. The structure is a three-dimensional mixed framework with channels formed by six- and eight-membered rings. K⁺ ions and water mol­ecules are located in the channels.

(NH₄)₄Na₂[V₁₀O₂₈]·10H₂O

The title structure contains typical centrosymmetric OV₆ double octahedra and centrosymmetric pairs of edge-shared NaO₆ double octahedra forming a layered structure.

Bis(2-amino­pyridine-N)­bis­(benzoato-O)­zinc

Ni^II and Zn^II complexes of the hexadentate macrocyclic ligand cis-6,13-di­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-6,13-di­amine

Di-μ-isoprop­oxy-bis­[bis­(η⁵-methyl­cyclo­pentadienyl)yttrium(III)]

Polymorphs and pseudo-polymorphs of μ-oxo-bis­{[N,N′-bis­(salicyl­idene)­propane-1,3-di­amine]oxorhenium(V)}

cis-Di­chloro(5,8-dioxa-2,11-di­thia[12]-o-cyclo­phane)­palladium(II)

Hydrido-sulfido-bridged triangular Os₃ cluster compounds with different phosphine ligand substitution patterns

Adducts of nickel(II) acetylacetonate chelating with heterocyclic bases: 3-cyano­pyridine and 4-cyano­pyridine

Aqua­(5,6-di­methyl-1,10-phenanthroline-N,N′)­(glycolato-O,O′)­copper(II) nitrate

[1,5-Bis(1-methyl-1H-imidazol-2-yl­methyl-κN³)-1,5-di­aza­cyclo­octane-N,N′]chlorocobalt(II) perchlorate

Three new Zn^II sulfate complexes

trans-Bis(thio­acetato-S)bis­(tri­phenylphosphine-P)nickel(II)

Transition metal complexes with pyrazole-derived ligands. XI. [Zn(μ-L)(HL)(OAc)]₂ (HL is 4-acetyl-3-amino-5-methyl­pyrazole)

A 4-ethyl­pyridine complex of tetra­chloro­molybdenum(III) and its oxidation product

Ni(bipy)₂Ni(CN)₄, a new type of one-dimensional square tetra­cyano complex

catena-Poly­[[dicyan­amido(1,10-phen­anthroline)copper(II)]-μ-dicyan­amido]

Polymeric aqua­(glutarato)(hydrogen glutarato)­lanthanum(III) monohydrate

Layered zincoarsenate templated by N,N,N′,N′-tetra­methyl­ethyl­ene-di­amine mol­ecules

This new organic zincoarsenate is built up from a two-dimensional framework of ZnO₅ and ZnO₆ polyhedra, and AsO₄ tetrahedra. Trigonally coordinated O atoms are present in these layers. The organic cations are inserted between the inorganic sheets.

The lithium chloride complex of the anti isomer of the bridged spherand C₅₀H₄₈O₆

1,2-Di­cyano-1,2-bis­(imidazolidine-2-thione)­digold(I) and 2,2-di­cyano-1,1-bis­(di­methyl­thio­urea)­digold(I)

Di­iodo­bis­(1-methyl-1,3-imidazolium-2-thiol­ato-S)­mercury(II)

Hydrolysis products of diorganotin dihalides. I. Bis[1,3-di­hydroxo-1,1,3,3-tetra­kis­(2-methyl-2-phenylpropyl)­distannoxane]

Di­iodobis(4-methylpentan-2-onato-C⁴,O)tin(IV): a comparison with di­iodobis(3-meth­oxy-3-oxo­propyl-C,O)tin(IV)

Pyridine–pyridine π–π stacking interactions in penta­carbonyl­[pyridine-4(1H)-thione]­tungsten(0)

catena-Poly[[di­aqua(1,10-phenanthroline-N,N′)cadmium(II)]-μ-(sulfato-O:O′)] and catena-poly[[di­aqua(2,9-di­methyl-1,10-phenanthroline-N,N′)cadmium(II)]-μ-(sulfato-O:O′)]

Tetra­allyl (2,2′-bi­pyridyl)-rac-3,3,7,7-tetra­methyl-trans-5-palladatri­cyclo[4.1.0.0^2,4]­heptane-1,2,4,6-tetra­carboxyl­ate above and below the phase-transition temperature of 194 K

Lithium phospho­enolpyruvate monohydrate at 85 K

(S)-Tri­carbonyl[(1,2,3,4-η)-(5R,6S)-1-chloro-5,6-di­methoxycyclohexa-1,3-diene]iron(0)

μ-Glycine-O:O′-di-μ-oxo-bis­[(gly­cinato-N,O)­oxomolybdenum(V)]

6,7-Di­hydrodibenzo[e,g]azulen-8(5H)-one and 12,13-di­hydrobenzo[e]­napth­[2,1-g]­azulen-14(11H)-one

2,3,3a,4,9,9a-Hexa­hydro-9-phenylbenzo[f]indene derivatives

(3R*,3′R*)-1,1′-Di­methyl-3,3′-biindoline-2,2′-di­thione

3,5-Di­methyl-6-(4-nitro­anilino)-2,3,4,5-tetra­hydro-1,3,5-triazine-2,4-dione, (II), 3,5-di­methyl-6-(N-methyl-4-nitroanilino)-2,3,4,5-tetra­hydro-1,3,5-triazine-2,4-dione, (III), and 1,3,5-tri­methyl-6-(4-nitro­phenyl­imino)-1,3,5-triazinane-2,4-dione, (IV)

{[(N-Methyl-p-toluidino)­diphenyl­phospho­ranyl­idene]­methyl}(N-methyl-p-toluidino)­diphenyl­phospho­nium iodide

2-[6-(1H-Benzimidazol-2-yl)-2-pyridyl]-1H-benzimidazol-3-ium perchlorate monohydrate

7-Chloro-3,6-di­methyl-1H-indene-2-carb­aldehyde

Hydrogen bonds and C—H⋯O interactions in the enol tautomer of 4-(phenylsulfonyl)spiro­[cyclo­pentane-1,9′-[9H]­fluorene]-2,3-dione

4,8-Di­meth­oxy-1-naphthalene­methanol

(3R*,4R*)-3-Iso­propyl-4-phenyl­azetidin-2-one at 150 K

Hydrogen bonding and C—H⋯X interactions in 3-fluoro-2-[1-(1-naph­thyl)ethyl]benzoic acid

Hydrogen bonds and C—H⋯O interactions in 2-(2-methyl­benzyl)­malonic acid at 150 K

A structural hierarchy in the hydrogen-bonded adduct ethane-1,2-di­phospho­nic acid–4,4′-bi­pyridyl–water (1/1/2): an N-component N-dimensional structure (N = 3) with substructures having N = 1 and 2

Chains of fused rings in the hydrogen-bonded structure of meso-6,13-di­amino-6,13-di­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane–2,2′-biphenol (1/2)

Hydrogen-bonded molecular ladders in 1,4-bis­(4-chloro­phenylsulfonyl)-2,5-di­methylbenzene

Hydrogen-bonded molecular ladders in trans-1,2-bis­(2-nitro­anilino)­cyclo­hexane

21α-Fluoro-7-norvouacapane-17β,21α-lactone

2,6-Di­phenylthia­pyran-4-one

6-Amino-5,5,7-tri­cyano-3,3a,4,5-tetra­hydro-2H-indene-4-spiro­cyclo­pentane

N—H⋯π hydrogen bonding in 2-amino­fluorene

S—H⋯S hydrogen-bond chain in thio­salicylic acid

Tetra­butyl­ammonium α-acetyl-γ-butyrolactonate containing a three-dimensional hydrogen-bonded network

Di­methyl 9,10-anthracenedi­carboxyl­ate: a centrosymmetric transoid molecule

Red, orange and yellow crystals of 4,5-bis­(4-meth­oxy­phenyl)-2-(3-nitro­phenyl)-1H-imidazole

1,1,3,3-Tetra­methyl­guanidinium di­hydrogen­orthophosphate

Methyl {1-[2,3-O-iso­propyl­idene-5-O-(4-nitro­benzoyl)-α-D-ribo­furan­osyl]-4-meth­oxy­carbonyl-1H-1,2,3-triazol-5-yl}acetate

p-Phenyl­azoaniline hydro­chloride from powder data: protonation site and UV–visible spectra

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

Benzyl­tri­ethyl­ammonium 2,2,2,4-tetra­chloro-2,5-di­hydro-1,2λ⁵-oxatellurole

6-Hy­droxy-2,2-di­methyl-3,4-di­hydro-2H-benzo[b]pyran

NEt₄OH·4H₂O containing infinite hydroxide–water ribbons

1,15-Penta­decane­diol

A pentaerythritol-derived spirodi­phospho­nate

Verticine ethanol hydrate (2/1/1)

Pefloxacinium methane­sulfonate 0.10-hydrate

Bis­(tetra­methyl­ammonium) hexa­molyb­date hydrate, [(CH₃)₄N]₂[Mo₆O₁₉]·H₂O

The crystal and molecular structure of the title compound shows that the poly­oxo­anion [Mo₆O₁₉]²⁻ is built up from six distorted MoO₆ octahedra sharing common edges and one common vertex at the central O atom, and has crystallographic m3m (O_h) symmetry. The cation has crystallographic 3m symmetry.

cis-Di­chloro­bis­(triphenyphosphite-P)palladium(II)

In the title compound, the Pd^II centre shows slightly distorted square-planar geometry, with the two chloro ligands in cis positions.

Bis­(aceto­nitrile-N)(o-benzo­quinone di­imine-N,N′)-trans-bis­(tri­phenyl­phosphine-P)­ruthenium(II) bis­(hexa­fluoro­phosphate) methanol solvate

The Ru atom in the title complex shows an octahedral coordination and a trans arrangement of the tri­phenyl­phosphine groups. Both aceto­nitrile mol­ecules are in the same plane as the o-benzoquinone di­imine ligand. Bond distances for the benzoquinone di­imine ring establish a quinone arrangement.

Potassium N-(6-oxo­cyclo­hexa-1,3-dien-5-yl­idene­methyl)­glycinate

Schiff bases show a tautomeric equilibrium between the enol–imine and keto–amine forms. The title compound has bond distances which are in agreement with a keto–amine tautomer arrangement.

A hydrated ethyl­ene­diammonium salt of a new polymeric polyoxoanion: (H₂en)₄[Co(H₂O)₂(OH)₂(VO)₆(HPO₄)₄(PO₄)₄]·3H₂O

The polyanion of the title compound contains four PO₄ tetrahedra and three VO₅ square pyramids that are linked through corner-sharing by alternating P—O—V which gives rise to a chain. The chains, connected by CoO₄(H₂O)₂ octahedra, form layers, resulting in a two-dimensional layered structure.

Bis­[methyl­enebis­(di­phenyl­phosphine)-P,P′]­nickel(II) diperchlorate

In the title compound, the Ni atom of the cation lies on an inversion centre and the Ni coordination is necessarily planar. The Ni—P distances are 2.2188 (5) and 2.2322 (5) Å, and the P—Ni—P angle is 73.12 (3)°. The unique perchlorate anion is not coordinated to the Ni atom.

[N,N-Bis(2-hy­droxy­ethyl)­dithio­car­bamato-S]­bis­(tri­phenyl­phosphine-P)­copper(I) tri­phenyl­phosphine solvate

The copper ion is in a distorted tetrahedral coordination, with two P atoms and two S atoms occupying the vertices. The longer Cu—S bond lies adjacent to the shorter C—S bond. The small S—Cu—S bond angle is due to the restricted bite angle of the ligand. The crystal structure has alternate layers of complex and tri­phenyl­phosphine mol­ecules parallel to the bc plane.

The chloro­(di­ethyl­amino)­dimethyl­tin dimer

The title compound consists of discrete [SnCl(CH₃)₂{N(C₂H₅)₂}]₂ dimers, with Sn atoms linked by bridging diethyl­amido groups. The coordination geometry about the metal atom is distorted trigonal bipyramidal, with the two methyl C atoms and one N atom in the equatorial plane, and the Cl and second N atom in axial positions.

Di­cyclo­hexyl­ammonium 2,4-di­chloro­phen­oxy­acetate and (2,4-di­chloro­phen­oxy­acetato-O,O′)bis­(tri­phenylphosphine-P)silver(I)

The monoclinic cell of di­cyclo­hexyl­ammonium 2,4-di­chloro­phenoxy­acetate contains four C₁₂H₂₄N⁺·C₅H₈Cl₂O₃⁻ ion pairs. The ammonium N atom is hydrogen bonded to the oxy­gen ends of two carboxyl groups to form a 12-membered O—C—O⋯HNH⋯O—C—O⋯HNH ring. In (2,4-di­chloro­phenoxy­lacetato)­bis­(tri­phenyl­phosphine)silver(I) (shown opposite), the carboxyl CO₂ unit chelates to the Ag atom in an anisobidentate manner [Ag—O = 2.436 (2) and 2.517 (2) Å]; the Ag atom shows distorted tetrahedral geometry.

(1R,4bS,8aR)-(1,2,3,4b,5,6,7,8,8a,9a-Deca­hydro-4,9a-di­aza­fluoren-1-yl)­methanol

The absolute configuration of C4b (S) and C8a (R) was established with respect to the known C1 configuration (R). The compound forms infinite chains of hydrogen-bonded mol­ecules.

2,2′-Bi(9,9-di-n-propyl­fluorene)

The title compound is a dimer of fluorene investigated as part of study of materials for optoelectronic applications. The rings in the mol­ecule are coplanar and the alkyl chains are perpendicular to this plane. The two fluorene moieties are head-to-foot and are related by a crystallographic centre of inversion.

N-(3-Iodo­propyl)­phthal­imide

In the mol­ecule of the title compound, the phthal­imide group is not exactly planar. The dihedral angle between the mean planes of the phthal­imide and iodo­propyl moieties is 76.6 (2)°. The structure is stabilized by intermolecular C—H⋯O and C—H⋯I interactions, and an intermolecular I⋯O interaction of 3.571 (4) Å, the latter linking the mol­ecules into infinite chains.

6-Di­meth­oxy­methyl-1-meth­oxy­carbonyl­bicyclo­[3.1.0]­hex-2-ene-2-carboxylic acid

The title compound, prepared by a standard synthetic method, has a cyclo­propane ring fused to a cyclo­pentene ring. Comparison of the unit-cell dimensions and space group of this material with those of a crystal of the same material prepared using a route involving pig liver esterase hydrolysis shows them to be identical.

N-(6-Bromo-4-oxo-3,4-di­hydro­pteridin-2-yl)-2,2-di­methyl­propan­amide

The rings in the pterin moiety are planar and the carbonyl O atom is in a synperiplanar conformation. N—H⋯N and N—H⋯O intermolecular hydrogen bonds form eight-membered rings with a graph-set motif of R²₂(8) on each side of the mol­ecules, extending into infinite chains.

2,2′,4,4′,6,6′-Hexa­methyl-4,4′-bi­[4H-pyran­yl]

Bi­pyran­yls and pyryl­ium salts are used for photochemical redox reactions. The pyran ring of the title mol­ecule is not planar; the O atom lies very significantly out of the least-squares plane.

Benzyl 5-{2-[2-(di­eth­oxy­phosphinoyl)­acetyl]-3-oxo-7-thia-2,4-di­aza­bicyclo­[3.3.0]­oct-6-yl}pentanoate, a novel biotin derivative

In the title compound, the phospho­no­acetate carbonyl is rotated slightly out of the plane of the ureido ring, with a C—N—C—O torsion angle of −6.9 (4)°.

24(R)-Acetyl­oxy-1α,2α-ep­oxy­cholesta-4,6-dien-3-one hydrate

In the title compound, cyclo­hexane rings A and B are in the sofa conformation, ring C is in a chair conformation and the five-membered ring D is in an envelope conformation. The structure is stabilized by inter- and intramolecular C—H⋯O and O—H⋯O hydrogen bonds.

9,10-Di­meth­oxy-4-methyl-1,2-di­hydro-1-aza­anthracen-2-one (kalasin­amide), a new aza­anthracene alkaloid

A new aza­anthracene alkaloid (kalasin­amide) has been isolated from the stems of Polya­thia suberosa collected in the northeastern part of Thailand and its structure has been determined.