Acta Crystallographica Section C

Crystal Structure Communications

Volume 55, Part 7 (July 1999)

Cover illustration: Three anionic polymeric networks: sodium(I)-ruthenium(III), sodium(I)-rhodium(III) and sodium(I)-aluminium(III) mu-oxalato complexes with tris(2,2'-bipyridine)ruthenium(II) cations, see Pellaux, Decurtins & Schmalle, pages 1075-1079. Displacement ellipsoids are shown at the 50% probability level.

cif-access (inorganic compounds)
cif-access (organic compounds)
inorganic compounds
metal-organic compounds
organic compounds

cif-access (inorganic compounds)

Acta Cryst. (1999). C55, IUC9900074 [ doi:10.1107/S0108270199099254 ]

Low-temperature KFeGeO₄

R. Hammond and J. Barbier

Synopsis: Low-temperature potassium iron germanium tetraoxide is a stuffed tridymite derivative with a completely disordered Fe/Ge tetrahedral distribution.

Formula: KFeGeO₄

Acta Cryst. (1999). C55, IUC9900075 [ doi:10.1107/S0108270199099242 ]

Hexagonal -KFeSiO₄

R. Hammond and J. Barbier

Synopsis: The low-temperature [beta] -KFeSiO₄ (potassium iron silicate) polymorph crystallizes with a kalsilite-type structure having P6₃22 symmetry and a disordered Fe/Si tetrahedral distribution.

Formula: K_0.97Fe_0.97Si_1.03O₄

cif-access (organic compounds)

Acta Cryst. (1999). C55, IUC9900073 [ doi:10.1107/S0108270199099230 ]

1,1-Bis(4-methoxyphenyl)-3,3-dimethylbutan-2-one

S. S. Kuduva, A. K. Katz, H. L. Carrell and G. R. Desiraju

Synopsis: The title compound was obtained as a by-product of the reaction of pinacolone and 4-iodoanisole. The crystal structure was determined at 120(2)K. The molecule is bisected by a mirror plane (space group Pnma).

Formula: C₂₀H₂₄O₃

Acta Cryst. (1999). C55, IUC9900071 [ doi:10.1107/S0108270199099229 ]

Ethyl hydrogen 4,5-dibromophthalate

D. Britton

Synopsis: The molecular structure of 4,5-dibromophthalic acid monoethyl ester is normal. The carboxylic acid group is rotated 12.8° and the ethoxycarbonyl group 69.0° out of the mean plane of the benzene ring.

Formula: C₁₀H₈Br₂O₄

Acta Cryst. (1999). C55, IUC9900069 [ doi:10.1107/S0108270199099217 ]

1-Deoxy-1-(2-fluorophenyl)--D-ribofuranose

J. W. Bats, J. Parsch and J. W. Engels

Synopsis: The ribofuranose ring in the title compound has a C2^'-endo envelope conformation. The crystal packing consists of intermolecular hydrogen-bonding and phenylphenyl interactions.

Formula: C₁₁H₁₃FO₄

Acta Cryst. (1999). C55, IUC9900070 [ doi:10.1107/S0108270199099205 ]

1-Deoxy-1-(3-fluorophenyl)--D-ribofuranose

J. W. Bats, J. Parsch and J. W. Engels

Synopsis: The structure of the title compound is isostructural with 1-deoxy-1-phenyl- [beta] -D-ribofuranose [Matulic-Adamic et al. (1996). J. Org. Chem. 61, 3909-3911]. The ribofuranose ring has a C2^'-endo,C3^'-exo twist conformation.

Formula: C₁₁H₁₃FO₄

Acta Cryst. (1999). C55, IUC9900072 [ doi:10.1107/S0108270199099199 ]

Methyl 2-amino-4-(methoxymethyl)thiazole-5-carboxylate

A. R. Kennedy, A. I. Khalaf, A. R. Pitt, M. Scobie, C. J. Suckling, J. Urwin, R. D. Waigh and S. C. Young

Synopsis: The two crystallographically independent conformations of the title compound differ only by the rotational positions adopted by their methoxymethyl substituents. Intermolecular contacts are dominated by hydrogen bonding involving the amine H atoms.

Formula: C₇H₁₀N₂O₃S

Acta Cryst. (1999). C55, IUC9900077 [ doi:10.1107/S0108270199099187 ]

A diketopiperazine derivative of quinapril

K. Vyas, K. Shashi Rekha, P. Rajender Kumar, S. Raju, M. R. Sarma and G. Om Reddy

Synopsis: The title compound, ethyl 2-(1,2,3,4,5,6,11,11a-octahydro-3- methyl-1\,4-dioxopyrazino[1\,2-b]isoquinolin-2-yl)-4-phenylbutanoate, is formed due to cyclization of quinapril in solution. The configurations at the three chiral centres are all S. The six-membered B and C rings assume half-chair and boat confirmations, respectively. The molecules in the lattice are stabilized by van der Waals contacts.

Formula: C₂₅H₂₈N₂O₄

Acta Cryst. (1999). C55, IUC9900068 [ doi:10.1107/S0108270199099175 ]

8-Methyltricyclo[9.3.0.0^3,7]tetradec-3-ene-5,10-dione and 7,12-dihydroxy-9,12-dimethyltetracyclo[8.2.1.0^1,5.0^7,11]tridecan-13-one methanol solvate

M. Umehara, H. Hosomi and S. Ohba

Synopsis: The title compounds, C₁₅H₂₀O₂, (I), and C₁₅H₂₂O₃^.CH₃OH, (II), were obtained by intramolecular cyclization of the 5- and 3-acetonyl derivatives of 4-methylbicyclo[6.3.0]undecane-2,6-dione, respectively. Dione (I) is an ophiobilin-like C₅-C₈-C₅ fused-ring compound and diol (II) is a C₅-C₆-C₅-C₅ tetracyclic compound.

Formula: C₁₅H₂₀O₂ and C₁₅H₂₂O₃CH₄O

Acta Cryst. (1999). C55, IUC9900067 [ doi:10.1107/S0108270199099163 ]

Redetermination of biphenylene at 130K

R. Boese, D. Bläser and R. Latz

Synopsis: Biphenylene is one of the key compounds in the discussion of bond localization in aromatic systems, usually addressed as the Mills-Nixon effect [Mills & Nixon (1930). J. Chem. Soc. p. 2510]. A pronounced bond localization due to the Mills-Nixon effect in the direction of one of the Kekule forms is established. Compared with the previous structure determination by Fawcett & Trotter [Acta Cryst. (1966), 20, 87-93], the significance of bond-length alternation in relation to the s.u.'s in the six-membered rings has been dramatically increased.

Formula: C₁₂H₈

Acta Cryst. (1999). C55, IUC9900076 [ doi:10.1107/S0108270199099151 ]

1,4,4a,5,8,8a-Hexahydro-1,4-methanonaphthalene-5,8-dione

O. Söntgen and M. Bolte

Synopsis: The title compound crystallizes with two nearly identical molecules in the asymmetric unit. The molecules essentially exhibit mirror symmetry.

Formula: C₁₁H₁₀O₂

Acta Cryst. (1999). C55, IUC9900066 [ doi:10.1107/S010827019909914X ]

Substituted clonidine derivatives. I. 3,5-Dichloro-4-(imidazolidin-2-ylideneamino)benzonitrile and 3,5-dichloro-4-(1,3-diisobutyrylimidazolidin-2-ylideneamino)benzonitrile

E. M. Elssfah, K. Chinnakali, H.-K. Fun, I. W. Mathison, E. K. Gan, M. Zubaid, T. W. Sam and K. S. Khoo

Synopsis: In the title compounds, C₁₀H₈C₁₂N₄ (R= H), (I), and C₁₈H₂₀C₁₂N₄O₂ (R = COCHMe₂), (II), the dihedral angle between the imidazolidine and phenyl rings are 67.7(1) and 70.34(9)°, respectively. In (I), the imidazolidine ring adopts a half-chair conformation, whereas in (II), it is in a flattened envelope conformation.

Formula: C₁₀H₈Cl₂N₄ and C₁₈H₂₀Cl₂N₄O₂

inorganic compounds

Acta Cryst. (1999). C55, 1041-1044 [ doi:10.1107/S0108270199001134 ]

A Ruddlesden-Popper-type layered perovskite, Na₂Ca₂Nb₄O₁₃

K. Chiba, N. Ishizawa and S. Oishi

Synopsis: The structure of Na₂Ca₂Nb₄O₁₃ consists of perovskite-type layers with a thickness corresponding to four perovskite cubes. The interlayer structure is of the rock-salt-type, composed of Na and O atoms. The atomic configuration suggests a ferroelectric nature along the b axis.

Formula: Ca₂Na₂Nb₄O₁₃

Acta Cryst. (1999). C55, 1044-1046 [ doi:10.1107/S0108270199003984 ]

Pentabarium tetraantimonide, -Ba₅Sb₄: a more symmetrical arrangement for the Ba₅Sb₄ compound

G. Derrien, L. Monconduit, M. Tillard and C. Belin

Synopsis: [beta] -Ba₅Sb₄ displays a more symmetrical arrangement than [alpha] -Ba₅Sb₄ (Pnma). It contains two anionic moieties, Sb₂^4- and Sb^3-, lying in tricapped and distorted monocapped trigonal prisms of Ba atoms, respectively.

Formula: Ba₅Sb₄

Acta Cryst. (1999). C55, 1046-1047 [ doi:10.1107/S0108270198018265 ]

K₂TeS₃

C. Rumpf, C. Näther and W. Bensch

Synopsis: The reaction of K₂S₃, tellurium and sulfur yields light-yellow single crystals of dipotassium tellurium trisulfide, K₂TeS₃. The structure consists of isolated TeS₃^2- anions, and K⁺ cations coordinated by six S atoms from five different TeS₃^2- anions within distorted octahedra.

Formula: K₂TeS₃

Acta Cryst. (1999). C55, 1048-1050 [ doi:10.1107/S0108270198017995 ]

A potassium sodium double salt of metavanadate, KNa(VO₃)₂

Y. Shan and S. D. Huang

Synopsis: KNa(VO₃)₂ adopts the pyroxene structure with K⁺ and Na⁺ cations, which lie on twofold axes, occupying the dodecahedral and octahedral cavities, respectively.

Formula: KNa(VO₃)₂

metal-organic compounds

Acta Cryst. (1999). C55, 1051-1052 [ doi:10.1107/S0108270199004175 ]

Pentacarbonyl-1⁴C,2C-[2(⁵)-cyclopentadienyl]--dicyclohexylphosphido-1:2²P-manganeserhodium(Mn--Rh)

U. Flörke and H.-J. Haupt

Formula: [MnRh(C₅H₅)(C₁₂H₂₂P)(CO)₅]

Acta Cryst. (1999). C55, 1052-1054 [ doi:10.1107/S0108270199003868 ]

[2,6-Bis(N-tert-butyliminomethyl)pyridine-³N](phenolato-O)rhodium(I)

H. Kooijman, J. W. Kaagman, K. Mach, A. L. Spek, A. M. M. Schreurs, H. F. Haarman, K. Vrieze and C. J. Elsevier

Formula: [Rh(C₆H₅O)(C₁₅H₂₃N₃)]

Acta Cryst. (1999). C55, 1054-1056 [ doi:10.1107/S0108270199004096 ]

A hydrated diclofenac salt of the hexaaquamagnesium ion

C. Castellari, F. Comelli and S. Ottani

Formula: [Mg(H₂O)₆](C₁₄H₁₀Cl₂NO₂)₂2H₂O

Acta Cryst. (1999). C55, 1056-1058 [ doi:10.1107/S0108270199004345 ]

trans-Bis(acetato-O)bis(2-amino-6-methylpyridine-N)copper(II)

N. Lah, L. Golic, P. Segedin and I. Leban

Formula: [Cu(C₂H₃O₂)₂(C₆H₈N₂)₂]

Acta Cryst. (1999). C55, 1058-1061 [ doi:10.1107/S0108270199004928 ]

Di--chloro-bis(aquachlorodimethyltin)-dichlorodimethyl[2,4,6-tris(2-pyridyl)-1,3,5-triazine]tin (1/2)

K. M. Lo, V. G. Kumar Das and S. W. Ng

Formula: [Sn₂(CH₃)₄Cl₄(H₂O)₂]2[Sn(CH₃)₂Cl₂(C₁₈H₁₂N₆)]

Acta Cryst. (1999). C55, 1061-1063 [ doi:10.1107/S0108270199004163 ]

A nickel complex with a tetradentate N₂S₂ Schiff base ligand

L. Gomes, E. Pereira and B. de Castro

Formula: [Ni(C₁₇H₁₆N₂S₂)]0.25C₄H₈O

Acta Cryst. (1999). C55, 1063-1065 [ doi:10.1107/S0108270199001018 ]

(5,6-Dimethyl-1,10-phenanthroline)(nitrato)(salicylaldehydato)copper(II)

L. Gasque, R. Moreno-Esparza, L. Ruiz-Ramírez and G. Medina-Dickinson

Formula: [Cu(C₇H₅O₂)(NO₃)(C₁₄H₁₂N₂)]

Acta Cryst. (1999). C55, 1065-1067 [ doi:10.1107/S0108270199001572 ]

Aqua(4,7-diphenyl-1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate monohydrate

L. Gasque, R. Moreno-Esparza, L. Ruiz-Ramírez and G. Medina-Dickinson

Formula: [Cu(C₇H₅O₂)(C₂₄H₁₆N₂)(H₂O)]NO₃H₂O

Acta Cryst. (1999). C55, 1067-1069 [ doi:10.1107/S0108270199004321 ]

Tetrakis(-phenylacetato-O:O')bis[(quinoline-N)cobalt(II)]

Y. Cui, F. Zheng and J. Huang

Formula: [Co₂(C₈H₇O₂)₄(C₉H₇N)₂]

Acta Cryst. (1999). C55, 1069-1072 [ doi:10.1107/S0108270199004564 ]

Charge-transfer salt of bis(cis-1,2-diphenylethene-1,2-dithiolato)palladate(1 -) with cobaltocenium, and neutral bis(cis-1,2-diphenylethene-1,2-dithiolato)palladium

C.-F. Sheu and J.-S. Lee

Formula: [Co(C₅H₅)₂][Pd(C₁₄H₁₀S₂)₂] and [Pd(C₁₄H₁₀S₂)₂]

Acta Cryst. (1999). C55, 1072-1075 [ doi:10.1107/S0108270199004333 ]

A linear trinuclear Cd^II-Cd^II-Cd^II complex with a -acetato bridge: bis{(-acetato)[-bis(salicylidene)-1,3-propanediaminato]cadmium(II)}cadmium(II)

O. Atakol, M. Aksu, F. Ercan, C. Arici, M. N. Tahir and D. Ülkü

Formula: [Cd₃(C₁₇H₁₆N₂O₂)₂(C₂H₃O₂)₂]

Acta Cryst. (1999). C55, 1075-1079 [ doi:10.1107/S0108270199003339 ]

Three anionic polymeric networks: sodium(I)-ruthenium(III), sodium(I)-rhodium(III) and sodium(I)-aluminium(III) -oxalato complexes with tris(2,2'-bipyridine)ruthenium(II) cations

R. Pellaux, S. Decurtins and H. W. Schmalle

Formula: [Ru(C₁₀H₈N₂)₃][NaRu(C₂O₄)₃], [Ru(C₁₀H₈N₂)₃][NaRh(C₂O₄)₃] and [Ru(C₁₀H₈N₂)₃][NaAl(C₂O₄)₃]

Acta Cryst. (1999). C55, 1079-1082 [ doi:10.1107/S0108270199003625 ]

Intermolecular (pyrrole)N-H(pyrrole) interactions in bis(2-pyrrolyl)methylferrocene, an organometallic porphyrin precursor

J. F. Gallagher and E. Moriarty

Formula: [Fe(C₅H₅)(C₁₄H₁₃N₂)]

Acta Cryst. (1999). C55, 1082-1084 [ doi:10.1107/S0108270199004187 ]

exo-[(RS,SR)-N,N'-Bis(salicylidene)-2,3-butanediaminato]oxovanadium(IV)

G. Hoshina, M. Tsuchimoto and S. Ohba

Formula: [VO(C₁₈H₁₈N₂O₂)]

Acta Cryst. (1999). C55, 1084-1087 [ doi:10.1107/S0108270199003704 ]

Di--aqua-bis[(trimethanol-O)sodium] anti-bis(-2-propanethiolato-S:S)bis[bis(2-propanethiolato-S)iron(II)] and bis(benzyltrimethylammonium) anti-bis(-2-propaneselenolato-Se:Se)bis[bis(2-propaneselenolato-Se)iron(II)]

R. Hauptmann, J. Lackmann, C. Chen and G. Henkel

Formula: [Na₂(CH₄O)₆(H₂O)₂][Fe₂(C₃H₇S)₆] and(C₁₀H₁₆N)₂[Fe₂(C₃H₇Se)₆]

Acta Cryst. (1999). C55, 1087-1090 [ doi:10.1107/S0108270199003881 ]

Diaquabis(2,2'-bipyridine-N,N')nickel(II) diperchlorate

Y. Rodríguez-Martín, J. González-Platas and C. Ruiz-Pérez

Formula: [Ni(C₁₀H₈N₂)₂(H₂O)₂](ClO₄)₂

Acta Cryst. (1999). C55, 1090-1092 [ doi:10.1107/S010827019900253X ]

Chloro(pentamethyl-⁵-cyclopentadienyl)bis(triphenylphosphine)ruthenium(II)

I. A. Guzei, M. A. Paz-Sandoval, R. Torres-Lubián and P. Juárez-Saavedra

Formula: [RuCl(C₁₀H₁₅)(C₁₈H₁₅P)₂]

Acta Cryst. (1999). C55, 1092-1093 [ doi:10.1107/S0108270199003893 ]

A copper(I) complex of 4-amino-3-thioxo-6-methyl-2,3,4,5-tetrahydro-1,2,4-triazin-5-one

I. A. Razak, K. Chinnakali, H.-K. Fun, P. Yang, W.-R. Zeng, F.-X. Xie, Y.-P. Tian and H. Zhang

Formula: [Cu(C₄H₆N₄O)₂]Cl

organic compounds

Acta Cryst. (1999). C55, 1094-1096 [ doi:10.1107/S010827019900308X ]

(R)-Spiro[(2R)-N-acetyl-2-phenyl-1,3-thiazolidine-4,3'-(3a'R,6a'S)-5',6a'-dimethyl-3a',-6a'-dihydro-3H-furo[2,3-b]furan-2-one]

M. Ramos Silva, A. Matos Beja, J. A. Paixão, L. Alte da Veiga, D. M. Barbosa, M. I. L. Soares, T. M. V. D. Pinho e Melo and A. M. d'A. Rocha Gonsalves

Formula: C₁₈H₁₉NO₄S

Acta Cryst. (1999). C55, 1096-1099 [ doi:10.1107/S0108270199004084 ]

N,N'-Diphenylguanidinium dihydrogen phosphate

P. S. Pereira Silva, J. A. Paixão, A. Matos Beja, M. Ramos Silva and L. Alte da Veiga

Formula: C₁₃H₁₄N₃⁺H₂PO₄^-

Acta Cryst. (1999). C55, 1099-1101 [ doi:10.1107/S0108270199004138 ]

3,12-Diaza-6,9-diazoniadispiro[5.2.5.2]hexadecane dichloride from X-ray powder data

V. V. Chernyshev, A. V. Yatsenko, V. A. Tafeenko, V. A. Makarov, E. J. Sonneveld and H. Schenk

Formula: C₁₂H₂₆N₄²⁺2Cl^-

Acta Cryst. (1999). C55, 1101-1103 [ doi:10.1107/S0108270199002772 ]

6-(2-Nitroprop-2-yl)quinoline-5-carbonitrile

J. Lokaj, V. Kettmann, V. Machácek and A. Halama

Formula: C₁₃H₁₁N₃O₂

Acta Cryst. (1999). C55, 1103-1105 [ doi:10.1107/S0108270199001055 ]

4,6,7,8,8a,9-Hexahydrothieno[3,2-f]indolizine-6,9-dione

J. Lokaj, V. Kettmann and S. Marchalin

Formula: C₁₀H₉NO₂S

Acta Cryst. (1999). C55, 1105-1112 [ doi:10.1107/S0108270199003649 ]

Molecular aggregation in selected crystalline 1:1 complexes of hydrophobic D- and L-amino acids. II. The D-norleucine series

B. Dalhus and C. H. Görbitz

Formula: C₆H₁₃NO₂C₅H₁₁NO₂, C₆H₁₃NO₂C₅H₁₁NO₂S, C₆H₁₃NO₂C₅H₁₁NO₂, C₆H₁₃NO₂C₆H₁₃NO₂ and C₆H₁₃NO₂C₆H₁₃NO₂

Acta Cryst. (1999). C55, 1113-1115 [ doi:10.1107/S0108270199004370 ]

A 1:1 complex between deoxycholate and tris(hydroxymethyl)methylammonium

P. H. Tusvik, A. Mostad, B. Dalhus and E. Rosenqvist

Formula: C₄H₁₂NO₃⁺C₂₄H₃₉O₄^-3H₂O

Acta Cryst. (1999). C55, 1115-1117 [ doi:10.1107/S0108270199003832 ]

3,5-Dichloro-4-(imidazolidin-2-ylideneammonio)benzoate dihydrate

E. M. Elssfah, K. Chinnakali, H.-K. Fun, I. W. Mathison, E. K. Gan, M. Zubaid, T. W. Sam and C. Y. Tan

Formula: C₁₀H₉Cl₂N₃O₂2H₂O

Acta Cryst. (1999). C55, 1117-1119 [ doi:10.1107/S0108270199002826 ]

(8RS,5SR,7SR)-7-Benzoyl-8-hydroxy-8-phenylspiro[4.5]decan-1-one

H. Surya Prakash Rao, K. Jayalakshmi, K. Chinnakali and H.-K. Fun

Formula: C₂₃H₂₄O₃

Acta Cryst. (1999). C55, 1119-1121 [ doi:10.1107/S0108270199004448 ]

3-Cyclopropyl-1,2,4-triazolo[3,4-b]benzothiazole monohydrate

K. Puviarasan, L. Govindasamy, S. Shanmuga Sundara Raj, D. Velmurugan, G. Jayanthi and H.-K. Fun

Formula: C₁₁H₉N₃SH₂O

Acta Cryst. (1999). C55, 1121-1123 [ doi:10.1107/S0108270199003261 ]

Tetraethylammonium (N,N-diethyldithiocarbamato-S,S')tetraiodotellurate(IV)

R. Krishna Kumar, G. Aravamudan, K. Sivakumar and H.-K. Fun

Formula: (C₈H₂₀N)[TeI₄(C₅H₁₀NS₂)]

Acta Cryst. (1999). C55, 1123-1125 [ doi:10.1107/S0108270199001845 ]

2,2-Bis(2-methoxyphenyl)-4-methyl-2H-benzo[h]chromene

K. Chinnakali, K. Sriraghavan, H.-K. Fun and V. T. Ramakrishnan

Formula: C₂₈H₂₄O₃

Acta Cryst. (1999). C55, 1125-1127 [ doi:10.1107/S0108270199002814 ]

9-Hydroxy-4-methyl-8-phenylthio-7,8,9,10-tetrahydrobenzo[h]coumarin

K. Chinnakali and K. Sriraghavan

Formula: C₂₀H₁₈O₃S

Acta Cryst. (1999). C55, 1127-1128 [ doi:10.1107/S0108270199003108 ]

Methyl (2RS,4aRS,8aRS)-2-(4-methylbenzyl)-3-oxoperhydronaphthalene-2-carboxylate

S. Rajamathe, D. Sethumadhavan, H. Surya Prakash Rao, K. Chinnakali and H.-K. Fun

Formula: C₂₀H₂₆O₃

Acta Cryst. (1999). C55, 1129-1130 [ doi:10.1107/S0108270199003352 ]

4,4a,4b,5,6,7,9,9a-Octahydro-1,4-methano-7-methyl-5-nitro-1H-fluoren-9-one

D. Mal, N. K. Hazra, G. D. Nigam, K. Chinnakali and H.-K. Fun

Formula: C₁₅H₁₇NO₃

Acta Cryst. (1999). C55, 1130-1132 [ doi:10.1107/S0108270199004151 ]

(2RS,5RS)-2,5-Bis[3-(4-methylphenyl)-3-oxopropyl]cyclopentan-1-one

H. Surya Prakash Rao, S. P. Senthilkumar, K. Chinnakali and H.-K. Fun

Formula: C₂₅H₂₈O₃

Acta Cryst. (1999). C55, 1132-1134 [ doi:10.1107/S0108270199004242 ]

1-(4-Benzylpiperidin-1-yl)glyoxal dioxime

S. Öztürk, S. Isik, M. Macit and H.-K. Fun

Formula: C₁₄H₁₉N₃O₂

Acta Cryst. (1999). C55, 1135-1136 [ doi:10.1107/S0108270199001857 ]

9a-Propargyl-1,2,3,9-tetrahydrofluorene-3,9-dione

K. Chinnakali, H.-K. Fun, D. Rajagopal, S. Swaminathan and K. Sriraghavan

Formula: C₁₆H₁₂O₂

Acta Cryst. (1999). C55, 1136-1138 [ doi:10.1107/S0108270199002693 ]

4-(4-Methylphenyl)-3-phenyl-4H-1,2,4-triazole

K. Chinnakali, H.-K. Fun, A. Senthilvelan, K. Sriraghavan and V. T. Ramakrishnan

Formula: C₁₅H₁₃N₃

Acta Cryst. (1999). C55, 1138-1140 [ doi:10.1107/S010827019900390X ]

Methyl (5SR,6SR)-1,3-dichloro-8-diethylamino-5,6-dihydro-5-hydroxy-7-nitro-6-phenylisoquinoline-5-carboxylate

T. K. Sarkar, S. K. Ghosh, G. D. Nigam, K. Chinnakali and H.-K. Fun

Formula: C₂₁H₂₁Cl₂N₃O₅

Acta Cryst. (1999). C55, 1140-1142 [ doi:10.1107/S010827019900311X ]

Trimethyl (5SR,6SR)-1,3-dichloro-8-diethylamino-5,6-dihydro-5-hydroxyisoquinoline-5,6,7-tricarboxylate

T. K. Sarkar, S. K. Ghosh, G. D. Nigam, K. Chinnakali and H.-K. Fun

Formula: C₁₉H₂₂Cl₂N₂O₇

Acta Cryst. (1999). C55, 1142-1144 [ doi:10.1107/S0108270199004023 ]

Imidazole-4-acetic acid monohydrate

N. Okabe and T. Hayashi

Formula: C₅H₆N₂O₂H₂O

Acta Cryst. (1999). C55, 1144-1147 [ doi:10.1107/S0108270199004205 ]

An asatone-type neolignan and its photocage product

R. Yoshihara, K. Mori, S. Nishiyama, S. Yamamura, H. Hosomi, S. Ohba and Y. Ito

Formula: C₂₄H₂₈O₁₀ and C₂₄H₂₈O₁₀

Acta Cryst. (1999). C55, 1147-1149 [ doi:10.1107/S0108270199003054 ]

Diisopropylammonium diphenylmethylnitronate at 200K

M. Sievert, N. Nagel, H. Bock and R. Dienelt

Formula: C₆H₁₆N⁺C₁₃H₁₀NO₂^-

Acta Cryst. (1999). C55, 1149-1152 [ doi:10.1107/S0108270199003777 ]

Pyridinium and 1,2-diazinium salts of chloranilic acid

H. Ishida and S. Kashino

Formula: C₅H₆N⁺C₆HCl₂O₄^-H₂O and 2C₄H₅N₂⁺C₆Cl₂O₄^2-

Acta Cryst. (1999). C55, 1152-1154 [ doi:10.1107/S0108270199000669 ]

7-Iodo-3-isopropylamino-4H-1,2,4-benzothiadiazine 1,1-dioxide

L. Dupont, B. Pirotte and P. de Tullio

Formula: C₁₀H₁₂IN₃O₂S

Acta Cryst. (1999). C55, 1154-1156 [ doi:10.1107/S0108270199003340 ]

(Z)-N-Benzyl-2,3-dihydro-2-(2-methoxybenzylidene)-4H-1,4-benzoxazine

S. Maiti, M. Mukherjee and G. Chaudhuri

Formula: C₂₃H₂₁NO₂

Acta Cryst. (1999). C55, 1156-1158 [ doi:10.1107/S0108270199003509 ]

Tris(prop-2-ynyl)ammonium chloride

T. Steiner, A. M. M. Schreurs and J. Kroon

Formula: C₉H₁₀N⁺Cl^-

Acta Cryst. (1999). C55, 1158-1160 [ doi:10.1107/S0108270199003765 ]

(+/-)-(3'a,4',6'a)-3',3'a,4',6'a-Tetrahydro-5,5,N,N-tetramethylspiro[1,3-dioxane-2,2'(1'H)-pentalene]-4'-acetamide, a triclinic crystal structure with local monoclinic pseudosymmetry

J. W. Bats, S. H. Öhlinger and J. Mulzer

Formula: C₁₇H₂₇NO₃

Acta Cryst. (1999). C55, 1160-1163 [ doi:10.1107/S0108270199003558 ]

4-(1H-1,2,4-Triazol-1-yl)phenol

C. Foces-Foces, P. Cabildo, R. M. Claramunt and J. Elguero

Formula: C₈H₇N₃O

Acta Cryst. (1999). C55, 1163-1167 [ doi:10.1107/S010827019900356X ]

(2-Hydroxyethyl)diisopropylammonium chloride and its derivatives

A. H. Mahmoudkhani and V. Langer

Formula: C₈H₂₀NO⁺Cl^-, C₈H₁₉ClN⁺Cl^- and C₈H₂₀NS⁺Cl^-

Acta Cryst. (1999). C55, 1167-1170 [ doi:10.1107/S0108270199003522 ]

(1S,2R)-1-Amino-2-methoxycyclohexane-1-carboxamide hydrochloride 0.25-hydrate

K. P. Fondekar, F.-J. Volk, E. Weckert and A. W. Frahm

Formula: C₈H₁₇N₂O₂⁺Cl^-0.25H₂O

Acta Cryst. (1999). C55, 1170-1173 [ doi:10.1107/S0108270199003662 ]

Mixed stacking and stoichiometry in a -molecular complex between fluorene and 1,3,5-trinitrobenzene

R. A. Mariezcurrena, S. Russi, A. W. Mombrú, L. Suescun, H. Pardo, O. L. Tombesi and M. A. Frontera

Formula: 1.5C₁₃H₁₀2C₆H₃N₃O₆

Acta Cryst. (1999). C55, 1173-1175 [ doi:10.1107/S0108270199003248 ]

Bis(2,2-dimethylaziridinyl)phosphinic amide

A. Hempel, N. Camerman, D. Mastropaolo and A. Camerman

Formula: C₈H₁₈N₃OP

Acta Cryst. (1999). C55, 1175-1176 [ doi:10.1107/S0108270199002334 ]

2,2'-Ethylenedioxydibenzaldehyde bis(thiosemicarbazone) bis(dimethyl sulfoxide)

X.-H. Zhu, X.-F. Chen, Y.-J. Liu, C.-Y. Duan, X.-Z. You, Y.-P. Tian and F.-X. Xie

Formula: C₁₈H₂₀N₆O₂S₂2C₂H₆OS

Acta Cryst. (1999). C55, 1176-1179 [ doi:10.1107/S010827019900445X ]

Hydrogen bonding and C-HO interactions in 2,2'-dihydroxy-5,5'-dimethoxybiphenyl-3,3'-dicarbaldehyde

R. E. Gerkin

Formula: C₁₆H₁₄O₆

Acta Cryst. (1999). C55, 1179-1181 [ doi:10.1107/S0108270199002759 ]

1,2:3,4:5,6-Tri-O-isopropylidene-D-mannitol

P. Liu, T.-B. Wen and J.-K. Cheng

Formula: C₁₅H₂₆O₆

Acta Cryst. (1999). C55, 1181-1183 [ doi:10.1107/S0108270199003376 ]

6-Chloro-1-(-chloroacetyl)-1,2,3,4-tetrahydro-4-methylquinoline-2-spirocyclohexane

J. A. Henao-Martínez, A. R. Palma, V. V. Kouznetsov, G. Aguirre-Hernández, C. Fernando-Ortega and M. Soriano-García

Formula: C₁₇H₂₁Cl₂NO

Acta Cryst. (1999). C55, 1183-1186 [ doi:10.1107/S0108270199003078 ]

Low-temperature phase of bis(2-methoxycarbonyl-2-methylpropyl) 2,5-diisopropylidene-3,4-bis(2-methoxycarbonyl-2-methylpropoxycarbonyl)hex-3-enedioate, a crystal structure with six independent pseudo-related molecules

J. W. Bats, A. R. Nass and A. S. K. Hashmi

Formula: C₃₈H₅₆O₁₆

Acta Cryst. (1999). C55, 1186-1188 [ doi:10.1107/S0108270199002838 ]

17-Oxo-17a-oxa-17a-homo-5-androstan-3,4-diyl diacetate

L. C. R. Andrade, J. A. Paixão, M. J. de Almeida, E. J. Tavares da Silva, M. L. Sá e Melo and A. S. Campos Neves

Formula: C₂₃H₃₄O₆

Acta Cryst. (1999). C55, 1188-1190 [ doi:10.1107/S0108270199003315 ]

Racemic 3-(3,4-dimethoxyphenyl)-5a,6,8,9-tetrahydro-1H,7H-pyrano[4,3-b][1]benzopyran-1-one, an active antitumor agent

P. D. Robinson, A. Beatty, D. H. Hua, Y. Chen, C. Y. Meyers, E. M. Perchellet, J. B. Ladesich and J.-P. Perchellet

Formula: C₂₀H₂₀O₅

Acta Cryst. (1999). C55, 1190-1192 [ doi:10.1107/S0108270199005582 ]

2-(Isopropylthio)benzoic acid

R. E. Gerkin

Formula: C₁₀H₁₂O₂S

Acta Cryst. (1999). C55, 1192-1195 [ doi:10.1107/S0108270199004849 ]

Hydrogen bonding in quinolinium-4-carboxylate trihydrate

A. J. Dobson and R. E. Gerkin

Formula: C₁₀H₇NO₂3H₂O

Acta Cryst. (1999). C55, 1196 [ doi:10.1107/S0108270198013924 ]

N,N',N''-Trimethyl-N,N',N''-tris(3-methylphenyl)-1,3,5-benzenetricarboxamide is cubic (space group Pa $\overline{3}$ ) and not orthorhombic (space group Pbca). Erratum

F. H. Herbstein

Formula: C₃₃H₃₃N₃O₃

Acta Crystallographica Section C

Crystal Structure Communications

Volume 55, Part 7 (July 1999)

cif-access (inorganic compounds)

Low-temperature KFeGeO4

R. Hammond and J. Barbier

Hexagonal -KFeSiO4

R. Hammond and J. Barbier

cif-access (organic compounds)

1,1-Bis(4-methoxyphenyl)-3,3-dimethylbutan-2-one

S. S. Kuduva, A. K. Katz, H. L. Carrell and G. R. Desiraju

Ethyl hydrogen 4,5-dibromophthalate

D. Britton

1-Deoxy-1-(2-fluorophenyl)--D-ribofuranose

J. W. Bats, J. Parsch and J. W. Engels

1-Deoxy-1-(3-fluorophenyl)--D-ribofuranose

J. W. Bats, J. Parsch and J. W. Engels

Methyl 2-amino-4-(methoxymethyl)thiazole-5-carboxylate

A. R. Kennedy, A. I. Khalaf, A. R. Pitt, M. Scobie, C. J. Suckling, J. Urwin, R. D. Waigh and S. C. Young

A diketopiperazine derivative of quinapril

K. Vyas, K. Shashi Rekha, P. Rajender Kumar, S. Raju, M. R. Sarma and G. Om Reddy

8-Methyltricyclo[9.3.0.03,7]tetradec-3-ene-5,10-dione and 7,12-dihydroxy-9,12-dimethyltetracyclo[8.2.1.01,5.07,11]tridecan-13-one methanol solvate

M. Umehara, H. Hosomi and S. Ohba

Redetermination of biphenylene at 130K

R. Boese, D. Bläser and R. Latz

1,4,4a,5,8,8a-Hexahydro-1,4-methanonaphthalene-5,8-dione

O. Söntgen and M. Bolte

Substituted clonidine derivatives. I. 3,5-Dichloro-4-(imidazolidin-2-ylideneamino)benzonitrile and 3,5-dichloro-4-(1,3-diisobutyrylimidazolidin-2-ylideneamino)benzonitrile

E. M. Elssfah, K. Chinnakali, H.-K. Fun, I. W. Mathison, E. K. Gan, M. Zubaid, T. W. Sam and K. S. Khoo

inorganic compounds

A Ruddlesden-Popper-type layered perovskite, Na2Ca2Nb4O13

K. Chiba, N. Ishizawa and S. Oishi

Pentabarium tetraantimonide, -Ba5Sb4: a more symmetrical arrangement for the Ba5Sb4 compound

G. Derrien, L. Monconduit, M. Tillard and C. Belin

K2TeS3

C. Rumpf, C. Näther and W. Bensch

A potassium sodium double salt of metavanadate, KNa(VO3)2

Y. Shan and S. D. Huang

metal-organic compounds

Pentacarbonyl-14C,2C-[2(5)-cyclopentadienyl]--dicyclohexylphosphido-1:22P-manganeserhodium(Mn--Rh)

U. Flörke and H.-J. Haupt

[2,6-Bis(N-tert-butyliminomethyl)pyridine-3N](phenolato-O)rhodium(I)

H. Kooijman, J. W. Kaagman, K. Mach, A. L. Spek, A. M. M. Schreurs, H. F. Haarman, K. Vrieze and C. J. Elsevier

A hydrated diclofenac salt of the hexaaquamagnesium ion

C. Castellari, F. Comelli and S. Ottani

trans-Bis(acetato-O)bis(2-amino-6-methylpyridine-N)copper(II)

N. Lah, L. Golic, P. Segedin and I. Leban

Di--chloro-bis(aquachlorodimethyltin)-dichlorodimethyl[2,4,6-tris(2-pyridyl)-1,3,5-triazine]tin (1/2)

K. M. Lo, V. G. Kumar Das and S. W. Ng

A nickel complex with a tetradentate N2S2 Schiff base ligand

L. Gomes, E. Pereira and B. de Castro

(5,6-Dimethyl-1,10-phenanthroline)(nitrato)(salicylaldehydato)copper(II)

L. Gasque, R. Moreno-Esparza, L. Ruiz-Ramírez and G. Medina-Dickinson

Aqua(4,7-diphenyl-1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate monohydrate

L. Gasque, R. Moreno-Esparza, L. Ruiz-Ramírez and G. Medina-Dickinson

Tetrakis(-phenylacetato-O:O')bis[(quinoline-N)cobalt(II)]

Y. Cui, F. Zheng and J. Huang

Charge-transfer salt of bis(cis-1,2-diphenylethene-1,2-dithiolato)palladate(1 -) with cobaltocenium, and neutral bis(cis-1,2-diphenylethene-1,2-dithiolato)palladium

C.-F. Sheu and J.-S. Lee

A linear trinuclear CdII-CdII-CdII complex with a -acetato bridge: bis{(-acetato)[-bis(salicylidene)-1,3-propanediaminato]cadmium(II)}cadmium(II)

O. Atakol, M. Aksu, F. Ercan, C. Arici, M. N. Tahir and D. Ülkü

Three anionic polymeric networks: sodium(I)-ruthenium(III), sodium(I)-rhodium(III) and sodium(I)-aluminium(III) -oxalato complexes with tris(2,2'-bipyridine)ruthenium(II) cations

R. Pellaux, S. Decurtins and H. W. Schmalle

Intermolecular (pyrrole)N-H(pyrrole) interactions in bis(2-pyrrolyl)methylferrocene, an organometallic porphyrin precursor

J. F. Gallagher and E. Moriarty

exo-[(RS,SR)-N,N'-Bis(salicylidene)-2,3-butanediaminato]oxovanadium(IV)

G. Hoshina, M. Tsuchimoto and S. Ohba

Di--aqua-bis[(trimethanol-O)sodium] anti-bis(-2-propanethiolato-S:S)bis[bis(2-propanethiolato-S)iron(II)] and bis(benzyltrimethylammonium) anti-bis(-2-propaneselenolato-Se:Se)bis[bis(2-propaneselenolato-Se)iron(II)]

R. Hauptmann, J. Lackmann, C. Chen and G. Henkel

Diaquabis(2,2'-bipyridine-N,N')nickel(II) diperchlorate

Y. Rodríguez-Martín, J. González-Platas and C. Ruiz-Pérez

Chloro(pentamethyl-5-cyclopentadienyl)bis(triphenylphosphine)ruthenium(II)

I. A. Guzei, M. A. Paz-Sandoval, R. Torres-Lubián and P. Juárez-Saavedra

A copper(I) complex of 4-amino-3-thioxo-6-methyl-2,3,4,5-tetrahydro-1,2,4-triazin-5-one

I. A. Razak, K. Chinnakali, H.-K. Fun, P. Yang, W.-R. Zeng, F.-X. Xie, Y.-P. Tian and H. Zhang

organic compounds

(R)-Spiro[(2R)-N-acetyl-2-phenyl-1,3-thiazolidine-4,3'-(3a'R,6a'S)-5',6a'-dimethyl-3a',-6a'-dihydro-3H-furo[2,3-b]furan-2-one]

M. Ramos Silva, A. Matos Beja, J. A. Paixão, L. Alte da Veiga, D. M. Barbosa, M. I. L. Soares, T. M. V. D. Pinho e Melo and A. M. d'A. Rocha Gonsalves

N,N'-Diphenylguanidinium dihydrogen phosphate

P. S. Pereira Silva, J. A. Paixão, A. Matos Beja, M. Ramos Silva and L. Alte da Veiga

Low-temperature KFeGeO₄

Hexagonal -KFeSiO₄

8-Methyltricyclo[9.3.0.0^3,7]tetradec-3-ene-5,10-dione and 7,12-dihydroxy-9,12-dimethyltetracyclo[8.2.1.0^1,5.0^7,11]tridecan-13-one methanol solvate

A Ruddlesden-Popper-type layered perovskite, Na₂Ca₂Nb₄O₁₃

Pentabarium tetraantimonide, -Ba₅Sb₄: a more symmetrical arrangement for the Ba₅Sb₄ compound

K₂TeS₃

A potassium sodium double salt of metavanadate, KNa(VO₃)₂

Pentacarbonyl-1⁴C,2C-[2(⁵)-cyclopentadienyl]--dicyclohexylphosphido-1:2²P-manganeserhodium(Mn--Rh)

[2,6-Bis(N-tert-butyliminomethyl)pyridine-³N](phenolato-O)rhodium(I)

A nickel complex with a tetradentate N₂S₂ Schiff base ligand

A linear trinuclear Cd^II-Cd^II-Cd^II complex with a -acetato bridge: bis{(-acetato)[-bis(salicylidene)-1,3-propanediaminato]cadmium(II)}cadmium(II)

Chloro(pentamethyl-⁵-cyclopentadienyl)bis(triphenylphosphine)ruthenium(II)