Acta Crystallographica Section C

Crystal Structure Communications

Volume 55, Part 7 (July 1999)


Cover illustration 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)



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 [beta]-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: K0.97Fe0.97Si1.03O4


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)-[beta]-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 phenyl...phenyl interactions.

Formula: C11H13FO4



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

1-Deoxy-1-(3-fluorophenyl)-[beta]-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[9.3.0.03,7]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

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, [beta]-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, Sb24- and Sb3-, 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 TeS32- anions, and K+ cations coordinated by six S atoms from five different TeS32- 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-1[bold kappa]4C,2[bold kappa]C-[2([bold eta]5)-cyclopentadienyl]-[bold mu]-dicyclohexylphosphido-1:2[bold kappa]2P-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-[bold kappa]3N](phenolato-[bold kappa]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-[bold mu]-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([bold mu]-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 CdII-CdII-CdII complex with a [bold mu]-acetato bridge: bis{([bold mu]-acetato)[[bold mu]-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) [bold mu]-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...[bold pi](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-[bold mu]-aqua-bis[(trimethanol-O)sodium] anti-bis([bold mu]-2-propanethiolato-S:S)bis[bis(2-propanethiolato-S)iron(II)] and bis(benzyltrimethylammonium) anti-bis([bold mu]-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-[bold eta]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+C6Cl2O42-



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[alpha],4'[alpha],6'a[alpha])-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 [bold pi]-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-H...O 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-([alpha]-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[alpha]-androstan-3[alpha],4[beta]-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


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