The Covert Water in the Structure of Sr(ReO₄)₂.2H₂O: a Revision of the Sesquihydrate Model

The composition of Sr(ReO₄)₂.2H₂O has been reconfirmed as the dihydrate. The structure contains trigonal bipyramidal disordered ReO₄ groups with two partially occupied

A Novel Intermetallic Compound, CeCu_1−xBi₂

CeCu_1-xBi₂ is isotypic with ZrCuSi₂, and has a layered structure composed of two-dimensional Bi layers formed from closely arranged Bi atoms in a square-lattice array and CeBiCu slabs formed from edge-sharing distorted CeBiCu₄ octahedra.

Two Hydrous Divalent-Metal Diarsenates

Mg₂As₂O₇.2H₂O and Zn₂As₂O₇.2H₂O have been prepared by hydrothermal methods. They are isotypic and have a framework structure characterized by zigzag infinite chains of edge-sharing MO₆ octahedra linked by As₂O₇ groups to form a three-dimensional structure containing intersecting tunnels.

Yttrium and Titanium Bismuthates with Structures Related to β-Bi₂O₃

In Bi_7.5Y_0.5O₁₂ and Bi_7.68Ti_0.32O_12.16, Y and Ti atoms replace Bi atoms in the β-Bi₂O₃ structure and additional O atoms are incorporated. This causes local disorder and irregular displacements of all the atoms.

PdTe₂

The structure of PdTe₂ has been redetermined. The structure is two-dimensional and comprises layers of edge-sharing PdTe₆ octahedra.

Hexa­iododisilane

The crystal structure of Si₂I₆, prepared by heating SiI₄ with metallic silver, is reported. The Si₂I₆ molecules have a staggered conformation.

K₂MoO₂As₂O₇

Potassium molybdyl arsenate is built up from MoO₆ octahedra and As₂O₇ groups sharing corners to form layers. The two O atoms of the molybdyl group remain unshared and show short Mo-O distances. The K⁺ ions are located in the interlayer space.

A Reinvestigation of β-Gallium Oxide

The β-Ga₂O₃ structure is formed from a distorted cubic close packing of O atoms with Ga in both octahedral and tetrahedral sites, and contains double chains of edge-sharing octahedra connected by corner-sharing tetrahedra.

Ba₃[V₁₀O₂₈].19H₂O

The structure of Ba₃[V₁₀O₂₈].19H₂O is built up from decavanadate ions linked by hydrated Ba²⁺ cations. There are two crystallographically independent decavanadate ions in the asymmetric unit.

4,9-Diazonia-1,12-do­decanedi­ammonium Dilithium cyclo-Hexaphosphate Tetrahydrate

Potassium Phthalimide

Tetra­kis­(μ₃-2-methyl-5-thienyl)tetra­kis­(di­ethyl ether-O)-tetrahedro-tetralithium

Tetra­kis­(di­phenylamido-N)hafnium

[Li₂(μ₃-^tBu₂ P)(μ₂-^tBu₂P)(thf)]₂: a Redetermination

Penta­carbonyl[tris­(2-methoxyphenyl)phosphine-P]chromium and its Molybdenum Analogue

Dioxo(η⁵-penta­methylcyclo­pentadienyl)(tri­methylsilylmethyl)tungsten(VI)

The First μ₄-Se Spiro-Type Fe₄Se₃ Cluster: [(μ-4-CH₃-C₆H₄Se)Fe₂(CO)₆]₂(μ₄-Se)

Bis{[3-(di­phenylphosphino)propyl]tri­methylphosphonium-P}[(2,3,5,6-η)-norbornadiene]rhodium(I) Tris(tetra­fluoroborate)

A Monoclinic Form of Tetra­kis­(1-methylimidazole-N³)platinum(II) Diperchlorate

2-Tri­phenylstannyl-1,2-benziso­thiazol-3(2H)-one 1,1-Dioxide–Tri­phenylphosphine Oxide (1/1)

Butyldi­chloro­phenyltin–1,2-Bis(di­phenylphosphoryl)ethane (1/1)

Diiso­propylammonium (Mercapto­acetato-S,O)tri­phenylstannate

[(N,N-Di­methylthiocarbamoylthio)acetato]tri­methyltin

[3-(Di­ethylphosphono)propionato]tri­phenyltin

mer-[2'-(2-Benzoyl-1-methylethyl­idene)-1-naphthohydrazido(2–)](methanol)-cis-dioxo-molybdenum(VI)

trans-Tetra­chlorobis(tri­phenylphosphine-P)rhenium(IV)–mer-trans-Tri­chlorooxobis(tri­phenylphosphine-P)rhenium(V) (0.86/0.14)

(Z)-2,3-Bis(4'-[2.2.2]para­cyclophanyl)but-2-ene and μ-η6:η6-[(Z)-2,3-Bis(4'-[2.2.2]para­cyclophanyl)but-2-ene]-bis­[(hexa­fluoro­antimonato-F)silver(I)] Toluene Di­chloro­methane (1/1/1)

1,4-Bis(4'-[2.2.2]para­cyclophanyl)buta-1,3-diyne and its Bis[silver(I) hexa­fluoro­antimonate] Complex

[(CO)H(PPh₃)₂-arachno-OsB₃H₈]

trans(S)-(S-Methyl-D-penicillaminato)(D-penicillaminesulfinato)cobalt(III) Monohydrate

Tetra­aquabis(3,5-di­nitrobenzoato-O)cobalt(II) Tetrahydrate

The Pseudo-Racemic Complex Bis[tris­(2,2'-bi­pyridine)ruthenium(II)] Hexa­cyanocobaltate(III) Chloride Octahydrate, [Ru(bpy)₃]₂[Co(CN)₆]Cl.8H₂O

tert-Butylbis(di­methylglyoximato-N,N')(tri­phenylphosphine-P)rhodium

Tris(1,4,7,10-tetraoxa-13,16-di­thia­cyclo­octa­decane-S,S')ruthenium(II) Bis(hexa­fluorophosphate)–Water–Methanol (1/2/1)

Bis[1-hy­droxy-2(1H)-pyridine­thionato-O,S]palladium(II)

Di­bromo[N-(2-pyridylmethyl­idene)-2-pyridylmethylamine-N,N',N'']copper(II) Complex

Di­chloro(di-2-pyridylamine-N,N')copper(II)

Bis(pyridine-2,3-di­carboxylato-N,O)copper(II)

Bis(2-amino-4-chloro­methylthiazolium) Tetra­chlorocuprate at 200 and 100K and Bis(2-amino-4-methylthiazolium) Tetra­chlorocuprate at 100K

Disodium [N,N'-(1,3-Propanediyl)bis­(oxamato-N,O)]cuprate(II) Hexahydrate

A Chloro-Bridged Dinuclear Copper(II) Cationic Complex of a 15-Membered Tetra­aza Macrocyclic Ligand

{2-[Bis(1-methyl-2-benzimidazolylmethyl)amino]-ethanol}chlorocopper(II) Chloride Hydrate

A Biologically Active Gold Complex: Tri­chloro[(2-pyridyl)methanol-N]gold(III)

Di­phenyltin Diiodide

catena-Poly[silver-μ-(di-2-pyridyl ketone)-N,O:N',O] Tetra­fluoroborate

Polymeric [p-(2-Hy­droxy-5-methylphenylazo)benzoato]tri­methyltin

Les Composés de la Metformine avec les Ions Co^II, Cu^II et Ni^II

Tris(η⁵-cyclo­pentadienyl)phenolatoneptunium(IV)

Disodium Aqua[2,5,8-tris­(carboxymethyl)-12-phenyl-2,5,8-tri­aza-11-oxa-1,9-do­decanedi­carboxylato(5–)]europate Sesquihydrate

Five New Chlorochromates of Organic Bases

Cerium 3,5-Di­nitrobenzoate Dihydrate

β-Isopipitzol

3-Nitroaceto­phenone

A Lactone Derived from an Amino Acid with a Cyclo­hexyl Skeleton: (1S,6R,9S)-6-Benzamido-9-hydroxymethyl-8-oxabi­cyclo[4.3.0]non-3-en-7-one

Trinervinol

Acetonide-3-trinervinone

1-Phenyl-4-imidazolidinone (Z)-Oxime

L-Isoleucine, Redetermination at 120K

1,3-Adamantanedi­carboxylic Acid and 1,3-Adamantanedi­acetic Acid

Piperazinium L-Tartrate

One Bicyclic β-Lactam and Two Bicyclic γ-Lactam Compounds

Oxyacanthine

Two P2₁/n Monoclinic Phases of Fluorene-4-carboxylic Acid at 296K

Xanthene-9-carboxylic Acid

Accurate Redetermination of Di­iodobis(phenylsulfonyl)methane, (PhSO₂)₂CI₂

7-Methoxyvasicinone Hydrate

Bis(p-nitrobenzoate) Ester of cis-1,1-Di­methylsila­cyclo­hexane-3,4-diol

Methyl 9-Methyl-11-thioxo-8-oxa-10,12-di­azatri­cyclo[7.3.1.0^2,7]trideca-2,4,6-triene-13-carboxylate

Two Mesogenic Nitrobenzoxazoles

[1,3]Di­thiolo[4,5-b][1]benzo­thiophene-2-thione

p-(Di­methylamino)benzaldehyde Isonicotinoylhydrazone Monohydrate

p-Nitrobenzaldehyde Nicotinoylhydrazone Monohydrate

A 1:2 Host–Guest Complex of Di­aza-15-crown-5 with Picric Acid

3-Amino­pyrazine-2-carboxylic Acid

Flurtamone

Four ω-Phthalimidoaliphatic Peracids

(±)-2-Oxo­cyclodo­decane­acetic Acid: Structure and Hydrogen-Bonding Pattern of a Large-Ring γ-Keto Acid

Cyclo­hexane-Linked Indenyl Rings in 5,8-Bis(tri­methylsilyl)-6,7,12b,12c-tetra­hydro­indeno[2,1-c]fluorene

Hemiasterlin Methyl Ester

Humilinolide D

New Routes to Pyrano­tetra­hydro­furan Derivatives

Bis(2-nitro­phenyl) Tri­sulfide

1-Carboxyfluorenone: an Intramolecularly Hydrogen-Bonded γ-Keto Acid

Photochromic Pyrido-Annelated 2,2-Di­methylchromene

Comparison of the Geometries of 3,7,10-Tri­benzyl-3,7,10-tri­aza[3.3.3]propellane, (1), 7,10-Di­benzyl-3-p-tolyl-3,7,10-tri­aza[3.3.3]propellane, (2), and 7,10-Di­benzyl-3-oxa-7,10-di­aza[3.3.3]propellane, (3)

1,1-Bis(3',4,4'-tri­methyltetra­thiafulvalen-3-yl)ethanol Ethanol Hemisolvate; a New Bifunctional π-Donor Molecule

N,N-Di­benzoyl-2-phenylbenzylamine

The Diels–Alder Adduct of an Enantiopure Sulfinyl Tri­alkoxycarbonyl Ethene and Cyclo­pentadiene

(14α,22E)-14-Hydroxyergosta-4,7,22-triene-3,6-dione, C₂₈H₄₀O₃

(2'S,3'S,4'R)-5'-O-Benzoyl-3'-de­oxy-3'β-di­ethylphosphono-2'-O-tert-butyldi­methylsilyluridine

1,3-Di­cyclo­hexyl-2,4-bis­(cyclo­hexylimino)-1,3-diazetidine: Dimer of Di­cyclo­hexylcarbodi­imide

8-(4-Methylphen­oxy)-16H-di­naphtho[2,1-d:1',2'-g][1,3,2]dioxa­phosphocine 8-sulfide

1-O-Benzyl-β-L-arabino­pyranose, 1-O-Benzyl-3,4-O-iso­propyl­idene-β-L-arabino­pyranose and 1-O-Benzyl-2-O-benzoyl-3,4-O-iso­propyl­idene-β-L-arabino­pyranose

N-Acetyl-3-ethyl-2-phenyldeca­hydroquinolin-4-one, C₁₉H₂₅NO₂

Di­methyl 2,6-Di­methyl-4-(3-nitro­phenyl)-pyridine-3,5-di­carboxylate, Di­ethyl 2,6-Di­methyl-4-(3-nitro­phenyl)-1,4-di­hydro­pyridine-3,5-di­carboxylate, and Di­ethyl 2,6-Di­methyl-4-(3-nitro­phenyl)pyridine-3,5-di­carboxylate

(Tosylimino­iodo)benzene at 298K

Clemizole

The New Pentacyclic Saponine Ecdysantherin [3β-Hy­droxy-20-methylpregn-5,14-dien-16-one-(18–20)-lactone] from Ecdysanthera rosea Hook. et Arn. (Apocynaceae) of Vietnam

3-(1-Naphthyl­oxy)-1,2-benziso­thiazole 1,1-Dioxide: Electronic Effects of Conjugation

A Key Intermediate in the Synthesis of (+)-Hernandulcin

(S)-1,10-Di­meth­oxy-2,9-di­hydroxyaporphinium Chloride (Boldine Hydrochloride), C₁₉H₂₂NO₄⁺.Cl⁻

[ D-Ala², D-Leu⁵]-Enkephalin Hydrochloride

p-Nitro­phenyl α-D-Manno­pyranoside Hemihydrate

(2α,5α)-1,5,6,9,9-Penta­bromo-7-meth­oxy-2,3,3a,4,5,6-hexa­hydro-3a,6-methanoazulen-2-ol

cis-Di­chloro[2-(4-ethoxyphenyltelluro)ethyl methyl sulfide-S,Te]platinum(II), cis-PtCl₂[Te(C₆H₄OC₂H₅)CH₂CH₂(CH₃)S], and {Bis[2-(4-ethoxyphenyltelluro)ethyl]amino-N,Te,Te'}chloroplatinum(II) Chloride Tri­chloro­methane Monohydrate. Addendum

Addenda to Acta Cryst. (1992), C 48, 655-657 and Acta Cryst. (1993), C 49, 684-687.