A potassium zinc phosphate hydrate, KZn(HPO₄)(H₂PO₄)^.H₂O

Potassium zinc hydrogenphosphate dihydrogenphosphate hy- drate, KZn(HPO₄)(H₂PO₄) f vertex-sharing ZnO₄ and PO₄ groups. It is isostructural with NH₄Zn(HPO₄)(H₂PO₄)^.H₂O and RbZn(HPO₄)(H₂PO₄)^.H₂O.

A sodium zinc phosphate hydrate, Na₂Zn(H₂PO₄)₄^.4H₂O

Disodium zinc tetrakis(dihydrogenphosphate) tetrahydrate, Na₂Zn(H₂PO₄)₄^.4H₂O, is built up from vertex-sharing octahedral NaO₆ and ZnO₆, and tetrahedral PO₄ building blocks. It is isostructural with Na₂Ni(H₂PO₄)₂^.4H₂O.

Di-μ-chloro-bis­[tri­carbonyl(di­cyclo­hexylphosphine)rhenium]

The title compound is a rare example of a crystallographically characterized twofold chloro-bridged dirhenium complex. The molecule shows a planar Re₂Cl₂ ring with Re—Cl bond lengths of 2.5316(12) and 2.5404(11)Å. The two dicyclohexylphosphine ligands attached to the Re atoms are in anti positions.

Hexa­kis­(tetra­ethylammonium) tri-μ₄-iodo-di-μ₃-iodo-hexa­kis­[iodosilver(I)] iodide, (Et₄ N)₆[Ag₆I₁₁]I

In the cluster anion, composed of six Ag^I atoms and 11 iodides, the Ag₆ core forms a trigonal prism. Each Ag^I atom has a distorted tetrahedral geometry. The average Ag⋯Ag and Ag—I distances are 3.2005 (14) and 2.9377 (9) Å, respectively.

cis,trans-Bis(aceto­nitrile-N)(2,2'-bi­pyridine-N,N')di­chlororuthenium(II) hemihydrate

The title compound contains two acetonitrile and 2,2^'-bipyridine molecules in the equatorial plane. Two mutually trans-positioned chloride ligands occupy the axial positions in an almost linear arrangement. A substantial number of intermolecular hydrogen-bond interactions mediated by a solvate water and several neighboring molecules are observed.

Tetra­aquabis(4-pyridine­carboxylato-N)iron(II)

The Fe atom lies on an inversion center with a distorted octahedral coordination geometry defined by two pyridine N atoms and four water O atoms. The crystal structure is stabilized by O—H⋯O hydrogen bonds involving all the water H atoms and the carboxylate groups.

3-(Tri­phenylstannyl)propyl ethanoate

In MeC(O)O(CH₂)₃SnPh₃, the principal dimensions include Sn—Csp³ 2.150(2), Sn—C_aromatic 2.140(2)–2.145(2)Å and C—Sn—C 108.41(7)–110.50(7)°.

4,5-Bis(ferrocenylmethylthio)-1,3-di­thiole-2-thione

In [(C₅H₅FeC₅H₄)₂(C₅H₄S₅)], the values of the geometric parameters of the ferrocene and 1,3-dithiole-2-thione (dmit) moieties are within the normal ranges. There is an unusual thiol-S atom short contact [3.4889(18)Å] to a thione-S atom.

5-Methyl-3-nonanoyl-1,3,4-thia­diazole-2(3H)-thione and 3-decanoyl-5-methyl-1,3,4-thia­diazole-2(3H)-thione

The aliphatic chains of the title molecules, C₁₂H₂₀N₂OS, (I), and C₁₃H₂₂N₂OS, (II), align themselves parallel in the (101) crystallographic plane in both crystal structures.

A cyclic dimer of ethyleneglycol maleate

The title compound, 1,4,9,12-tetraoxacyclohexadeca-6,14-diene-5,8,13,16-tetraone, a cyclic dimer, was prepared using dilute-solution ring-chain trans-esterification reactions. The molecule has crystallographic twofold rotation symmetry and contains four ester groups linked by two planar ethylene and two staggered ethane units.

4,5-Di­chloro-2-nitroaniline

The molecular structure of 4,5-dichloro-2-nitroaniline is normal. There is an intramolecular N—H⋯O hydrogen bond. The molecules are held together in chains by intermolecular N—H⋯O and C—H⋯O hydrogen bonds.

Ethyl (E)-2-[benzyl(benzyloxycarbonyl)amino]-6,6-di­methylhept-2-en-4-ynoate

The title compound is an enynoate bearing a protected amino group at the olefinic C atom next to the ester group. The amino group is protected with a benzyl and a benzyloxycarbonyl group. The compound belongs to the group of acetylenic Michael acceptors which react with organocuprate reagents in a 1,6-Michael addition to functionalized allenes. Bearing a protected amino group, the title compound could be a precursor in the synthesis of allenic α-amino acids.

The Diels–Alder adduct (3aS,7aR,4S)-1,3,3a,-4,5,7a-hexa­hydro-7-methyl-3-oxoisobenzo­furan-4-carboxylic acid

The title compound is a derivative of the major cycloaddition product of dimethyl fumarate and 3-methyl-(E)-2,4-pentadiene-1-ol. The structure determined confirms that the major cycloadduct arises from the expected endo transition state.

2,4,5-Tri­phenylspiro[pyrazolidine-3,3'-(4'-flavanone)]

In 3^',4^'-dihydro-2^',2,4,5-tetraphenylspiro[pyrazolidine-3,3^'-(2H-1-benzopyran)]-4^'-one, the pyrazolidine ring adopts an envelope conformation and the six-membered ring in the flavanone moiety adopts a sofa conformation. The spiro substitution of the pyrazolidine ring causes elongation of the bonds within the flavanone moiety.

Methyl (SR)-8,10-di­chloro-1,2,3,4,5,6-hexa­hydro-6-hy­droxy-1-methyl-1,9-phenanthroline-6-carboxylate

In the title compound, the pyridine ring is planar. The central ring adopts a skew boat conformation where the methoxy carbonyl group is attached axially and the hydroxyl is attached equatorially. An O—H⋯N hydrogen bond links the molecules into infinite chains.

Hedychenone from Hedychium Yunnanense Gagnep

The relative configuration of hedychenone (C₂₀H₂₆O₂), which is a furanoid diterpene from Hedychium Yunnanense Gagnep, has been identified by single-crystal X-ray diffraction.

Benzyl[3-(3-indenyl)propyl]ammonium bromide

The title compound is one in a series of new bidentate aminoindenyl ligands synthesized during the course of our studies on transition metal complexes bearing chelating indenyl ligands. We studied this compound in order to compare its parameters with those found in complexes wherein the indene and/or amine moieties are coordinated to a transition metal.

(–)-(2S,3S,4S,5R,R_S)-1-tert-Butoxycarbonyl-3-hy­droxy-5-(1(S)-{N-[(R)-1-hy­droxy-3-methylbut-2-yl]-4-methylphenylsulfonimidoyl}ethyl)-4-methyl-2-phenylpyrrolidine at 133K

The structure of the title compound was determined at 133K to establish the absolute configuration of the chiral centers. The pyrrolidine ring has an envelope conformation. The molecule is stabilized by a weak bifurcated intramolecular hydrogen bond. The crystal packing consists of intermolecular O—H⋯O and C—H⋯O hydrogen bonds.

(+)-(2S,3S,4S,5S)-3-[3,5-Bis(tri­fluoro­methyl)benzyl­oxy]-N-(tert-butoxycarbonyl)-4,5-di­methyl-2-phenylpyrrolidine, (I), and (+)-(2S,3S,4S,5S)-3-[3,5-bis­(tri­fluoro­methyl)benzyl­oxy]-4,5-di­methyl-2-phenylpyrrolidinium p-toluene­sulfonate, (II), at 134K

The structures of (I) and (II) were determined at 134 K. The pyrrolidine rings have similar twist conformations in both compounds. Molecules of (II) are connected through intermolecular N—H⋯O hydrogen bonds into zigzag chains. Both crystal structures contain weak intermolecular C—H⋯O interactions. Compound (II) also shows intermolecular C—H⋯π_arene interactions.

Normal and inverse garnets: Ca₃Fe₂Ge₃O₁₂, Ca₃Y₂Ge₃O₁₂ and Mg₃Y₂Ge₃O₁₂

In the title compounds, the cation distributions correspond to a normal garnet structure for Ca₃^[8]Fe₂^[6]Ge₃^[4]O₁₂ and Ca₃^[8]Y₂^[6]Ge₃^[4]O₁₂, and to an inverse garnet structure for (MgY₂)^[8]Mg₂^[6]Ge₃^[4]O₁₂.

A one-dimensionally extended chain aluminophosphate

The title one-dimensionally extended chain aluminophosphate, ethylenediammonium bis(propane-1,3-diyldiammonium) dialuminium tetraphosphate, [NH₃(CH₂)₂NH₃][NH₃(CH₂)₃NH₃]₂[Al₂P₄O₁₆], contains infinite [AlP₂O₈]^3- chains composed of AlO₄ and PO₂(=O)₂ tetrahedra, held together via hydrogen bonds by two kinds of protonated amines.

Bis(cyclo­hexane-1,3-dionato)-C²,O¹-(ethylenedi­amine-N,N')platinum(II) trihydrate and bis­(cyclo­hexane-1,3-dionato)-C²,O¹-(N,N-di­methylethylenedi­amine-N,N')platinum(II)

Sodium hydrogen trans-glutaconate and ammonium hydrogen trans-glutaconate

A linear-chain silver(I) coordination polymer with tetra­kis­(iso­propylthio)-p-benzo­quinone

Bis(imidazolidine-2-thione)gold(I) di­iodoaurate(I)

Complexation of ω-thiocaprolactam with heavy metals: terminal and bridging coordination modes in cadmium and silver compounds

Bis[(2-chloro­ethyl)diiso­propylammonium] tetra­chlorocobaltate(II)

Bis(μ-acetato){μ-2,6-bis­[(2-hydroxybenzyl)-(2-pyridylmethyl)amino­methyl]-4-methylphenolato}diindium(III) nitrate dihydrate

The twinned structure of the μ-isopropoxidodiisopropoxido(p-tolylimido)vanadium(V) dimer, twin refinement against CCD area-detector data

Di­iodobis(4-methoxybenzaldehyde thiosemicarbazone-S)cadmium(II)

Di­chlorobis(di­methylformamide-O)bis­(4-nitrobenzaldehyde thiosemicarbazone-S)cadmium(II)

Bis[2-(phenylazo)imidazole-N]silver(I) nitrate methanol solvate

Di­bromo[propane-1,3-diylbis(di­phenylphosphine)-P,P']palladium(II)

trans-Bis(N,N-di­ethylethylenedi­amine-N,N')dioxorhenium(V) chloride trihydrate

[N,N'-Bis(5-bromosalicyl­idene)-1,3-di­amino­propane]copper(II)

Bis{(μ-nitrato)[μ-bis­(salicyl­idene)-1,3-propanediaminato]copper(II)}zinc(II)

Aqua[N,N'-bis­(salicyl­idene)-1,3-propanediaminato]copper(II)

Transition metal complexes with thiosemicarbazide-based ligands. XXXIX. [Benzoylacetone 3-methyliso­thiosemicarbazonato(2 –)-O,N¹,N⁴](pyridine-N)nickel(II)

Di­chloro[(cyclo­pentadienyl)tris­(di­methylphosphito-P)cobalt(III)-O,O',O'']oxomolybdenum(V)

Tri­methylgermylethyl p-nitrobenzoate

[La(NO₃)₂(Ph₃PO)₄]₂[Ni(C₄N₂S₂)₂]^.2CH₃OH

Tetra­phenylarsonium di­azidotri­phenylstannate

8-Iso­propyl-7,10-di­meth­oxy-3-phenyl-1-oxa-2,6,9-tri­aza­spiro[4.5]deca-2,6,9-triene

1-(2,4-Di­nitro­phenyl)-3-(2-hydroxyphenyl)-1H-pyrazole-4-carbaldehyde

5-Amino-4-(4-methoxyphenyl)-2-phenyl-7-(pyrrolidin-1-yl)-1,6-naphthyridine-8-carbo­nitrile

N-(4-Chloro-2-iodo­phenyl)-N-methylcinnamamide

1-Acetyl-2a',3',8',8a'-tetra­hydro-3',8'-(di­phenylmethylene­methano)spiro[indoline-3,2'-2'H-oxeto[3,2-b]naphthalen]-2-one

1',2',3',4'-Tetra­hydro-1,3-di­phenyl-4-p-tolylspiro[2-pyrazoline-5,2'-naphthalen]-1'-one

(+)-23,24-Dinor-3α,9α-ep­oxy-11-oxo-5β-cholan-22-oic acid: mutual carboxyl-to-ether dimeric hydrogen bonding in a steroidal carb­oxy–keto ether

(+)-3-Oxoandrosta-1,4-diene-17β-carboxylic acid: catemeric hydrogen bonding in a steroidal keto acid

2-Chloro-6-hydroxypyridinium chloride hydrate

1,10-Decanediol

1,14-Tetra­decanediol

4-Eth­oxy-N-(6-methylquinolin-2-ylmethylene)aniline

4-Chloro-2-(4-oxopent-2-en-2-ylamino)phenol

`Push–pull' effects in nitroethenamines

6,7,8,9-Tetra­hydro-3-methyl-1H-pyrano[4,3-b]quinolin-1-one

A boron-containing estrogen mimic

A zwitterionic Meisenheimer complex of 2,4,6-tri­nitro­benzene

Four N-(2-hydroxybenzyl­idene)aniline derivatives

(–)-Sparteinium bromide

The absolute configuration of sertraline (Zoloft) hydrochloride

1:2 Complexes of chloranilic acid with pyrimidine and pyrazine

Bis(epi-globulyl­oxy)(phthalocyaninato)silicon, a new photosensitizer for the photodynamic therapy of cancer

Methyl β-lactoside (methyl 4-O-β-D-galacto­pyranosyl-β-D-gluco­pyranoside) methanol solvate

4-Methylbi­cyclo[6.3.0]undecane-2,6-dione, (I), 7-bromo-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (II), 7-acetonyl-4-methylbi­cyclo[6.3.0]undecane-2,6-dione, (III), and 8-methyltri­cyclo[9.3.0.0^2,6]tetradec-5-ene-4,10-dione, (IV)

7-Phenyl-2,3,4,5-tetra­hydro-1H-1,4-diazepin-5-one

N-(6-Amino-3,4-di­hydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl)me­thionine

Triterpenoide. XVI. 2-Formylderivate des Oleanonsäure-methylesters und Allo-betulons

Novel compounds from 1,2-indanedione and 3,5-di­methoxyaniline

4-O-Benzyl-2,3-O-iso­propyl­idene-α-L-rhamno­pyranose