Hydrogen-bonded networks in 5-chloropyridin-2-amine-fumaric acid (2/1) and 2-aminopyridinium DL-malate.

Crystals of 5-chloropyridin-2-amine-(2E)-but-2-enedioate (2/1), 2C(5)H(5)ClN(2).C(4)H(4)O(4), (I), and 2-aminopyridinium DL-3-carboxy-2-hydroxypropanoate, C(5)H(7)N(2)(+).C(4)H(5)O(5)(-), (II), are built from the neutral 5-chloropyridin-2-amine molecule and fumaric acid in the case of (I) and from ring-N-protonated 2-aminopyridinium cations and malate anions in (II).

Hydrogen-bonded network in the trichloroacetate salts of 2-amino-5-chloropyridinium and 2-methyl-5-nitroanilinium monohydrate.

In the crystal structures of 2-amino-5-chloropyridinium trichloroacetate, C(5)H(6)ClN(2)(+).C(2)Cl(3)O(2)(-), (I), and 2-methyl-5-nitroanilinium trichloroacetate monohydrate, C(7)H(9)N(2)O(2)(+).C(2)Cl(3)O(2)(-).

Syntheses, crystal structure, spectroscopic characterization and antifungal activity of new N-R-sulfonyldithiocarbimate metal complexes.

Five new compounds with the general formula of (Bu(4)N)(2)[M(RSO(2)NCS(2))(2)], where Bu(4)N=tetrabutylammonium cation, (M=Ni, R=4-FC(6)H(4)) (1), (M=Zn, R=4-FC(6)H(4), 4-ClC(6)H(4), 4-BrC(6)H(4), 4-IC(6)H(4)), (2), (3), (4) and (5), respectively, were obtained by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO(2)N=CS(2)K(2)) with nickel(II) chloride hexahydrate or zinc(II) acetate dihydrate in metanol:water 1:1. The elemental analyses and the IR data are consistent with the formation of the expected bis(dithiocarbimato)metal(II) complexes. The (1)H and (13)C NMR spectra showed the signals for the tetrabutylammonium cation and the dithiocarbimate moieties.

A three-dimensional hydrogen-bonded network in bis(4-hydroxyanilinium) selenate(VI) dihydrate.

The title compound, 2C(6)H(8)NO(+).SeO(4)(2-).2H(2)O, contains 4-hydroxyanilinium cations, selenate(VI) anions and water molecules.

Two-dimensional hydrogen-bonded networks in 1-(diaminomethylene)thiouron-1-ium nitrate and bis[1-(diaminomethylene)thiouron-1-ium] phosphonate monohydrate.

Crystals of the title compounds, C(2)H(7)N(4)S(+).NO(3)(-), (I), and 2C(2)H(7)N(4)S(+).HPO(3)(2-).

Hydrogen-bonded networks in crystals of 1-(diaminomethylene)thiouron-1-ium perchlorate, hydrogen sulfate, dihydrogen phosphate and dihydrogen arsenate.

Crystals of the title compounds, namely 1-(diaminomethylene)thiouron-1-ium perchlorate, C2H7N4S+.ClO4-, 1-(diaminomethylene)thiouron-1-ium hydrogen sulfate, C2H7N4S+.HSO4-, 1-(diaminomethylene)thiouron-1-ium dihydrogen phosphate, C2H7N4S+.

The chloride, bromide and iodide salts of 1-(diaminomethylene)thiouron-1-ium.

Crystals of 1-(diaminomethylene)thiouron-1-ium chloride, C(2)H(7)N(4)S(+) x Cl(-), 1-(diaminomethylene)thiouron-1-ium bromide, C(2)H(7)N(4)S(+) x Br(-), and 1-(diaminomethylene)thiouron-1-ium iodide, C(2)H(7)N(4)S(+) x I(-), are built up from the nonplanar 1-(diaminomethylene)thiouron-1-ium cation and the respective halogenide anion. The conformation of the 1-(diaminomethylene)thiouron-1-ium cation in each case is twisted. Both arms of the cation are planar and rotated in opposite directions around the C-N bonds involving the central N atom.

1-(Diaminomethylene)thiourea: a tautomer of 2-imino-4-thiobiuret.

Crystals of the title compound, C(2)H(6)N(4)S, are built up from nonplanar 1-(diaminomethylene)thiourea molecules. Pairs of molecules related by inversion are linked by N-H..

Three-dimensional hydrogen-bonded framework in bis(melamin-1-ium) naphthalene-1,5-disulfonate melamine pentahydrate.

Crystals of the title compound, 2C(3)H(7)N(6)(+).C(10)H(6)O(6)S(2)(2-).C(3)H(6)N(6).

Bis(dihydronium) naphthalene-1,5-disulfonate.

The title compound is a salt, 2 H5O2+ x C10H6O6S2(2-), in which the anion lies across an inversion centre in the space group C2/c, while the cation contains a short but noncentred O-H...

2,4,6-Triamino-1,3,5-triazine-1H-isoindole-1,3(2H)-dione (1/3).

The asymmetric unit of the title compound, C(3)H(6)N(6).3C(8)H(5)NO(2), contains a melamine and a phthalimide [1H-isoindole-1,3(2H)-dione] molecule, both residing on a mirror plane, and a second phthalimide molecule residing on a general position. The two components are linked by almost linear N-H.

2,4-Diamino-6-methyl-1,3,5-triazin-1-ium trifluoroacetate.

Crystals of the title compound, C(4)H(8)N(5)+.C(2)F(3)O(2)-, are built up of singly protonated 2,4-diamino-6-methyl-1,3,5-triazin-1-ium cations and trifluoroacetate anions. The CF(3) group of the anion is disordered.

Two crystals of doubly protonated melaminium salts: melaminium bis(trifluoroacetate) trihydrate and melaminium bis(trichloroacetate) dihydrate.

Crystals of 2,4,6-triamino-1,3,5-triazine-1,3-dium bis(trifluoroacetate) trihydrate, C(3)H(8)N(6)(2+)x2CF(3)COO(-)x3H(2)O, and 2,4,6-triamino-1,3,5-triazine-1,3-dium bis(trichloroacetate) dihydrate, C(3)H(8)N(6)(2+)x2CCl(3)COO(-)x2H(2)O, both contain doubly protonated melamine rings that lie on crystallographic twofold axes. In the former structure, one water molecule also lies on a twofold axis. While the trifluoroacetate compound crystallizes in a centrosymmetric space group, the trichloroacetate is non-centrosymmetric, so it is useful as a material for non-linear optics.

Tetrakis[phthalocyaninato(2-)antimony(III)] docosaiodohexaantimony(III).

Crystals of a novel antimony(III)-phthalocyanine complex, [Sb(C(32)H(16)N(8))](4)[Sb(6)I(22)] or [SbPc](4)[Sb(6)I(22)], where Pc is the phthalocyaninate(2-) macrocycle, have been obtained from the reaction of pure powdered antimony with phthalonitrile under oxidation conditions of iodine vapour at 533 K. The crystal structure is built up from separate but interacting [SbPc](+) cations and [Sb(6)I(22)](4-) anions. Each Sb atom of the two independent [SbPc](+) cations is bonded to the four isoindole N atoms of the Pc macrocycle and lies 0.

Bis{[phthalocyaninato(2-)]arsenic(III)} octaiododiarsenic(III).

Crystals of the novel title arsenic(III)-phthalocyanine complex, [As(C32H16N8)]2[As2I8] or [AsPc]2[As2I8], where Pc is the phthalocyaninate(2-) macrocycle, have been obtained from the reaction of pure powdered arsenic with phthalonitrile under oxidizing conditions (iodine vapour) at 463 K. The crystals are formed by separate but interacting [AsPc]+ cations and centrosymmetric [As2I8]2- anions. The As atom of the [AsPc]+ ion is bonded to the four isoindole N atoms of the Pc macrocycle and lies 0.

Tetramethylammonium 2,5-dinitrophenolate monohydrate.

The crystal structure of the title compound, C4H12N+.C6H3N2O5-.H2O, is built up from tetramethylammonium cations, 2,5-dinitrophenolate anions and water molecules.

Melaminium maleate monohydrate.

In the title compound, 2,4,6-triamino-1,3,5-triazin-1-ium maleate monohydrate, C3H7N6+.C4H3O4-.H2O, containing singly protonated melaminium residues, maleate(1-) anions and water molecules, the components are linked by hydrogen bonds into a three-dimensional framework structure.

Anilinium monohydrogen DL-malate.

Crystals of the title salt, [(C(6)H(5)NH(3))](+).[(HOOC(CH(2))CH(OH)COO)](-) or C(6)H(8)N(+).C(4)H(5)O(5)(-), are built up from protonated anilinium residues and monodissociated DL-malate ions.

Bis(melaminium) DL-malate tetrahydrate.

The crystal structure of the title melaminium salt, bis(2,4,6-triamino-1,3,5-triazin-1-ium) DL-malate tetrahydrate, 2C(3)H(7)N(6)(+).C(4)H(4)O(5)(2-).4H(2)O, consists of singly protonated melaminium residues, DL-malate dianions and water molecules.

Hexakis(melaminium) tetrakis(dihydrogenphosphate) monohydrogenphosphate tetrahydrate.

The crystal structure of the new melaminium salt, hexakis(2,4,6-triamino-1,3,5-triazin-1-ium) tetrakis(dihydrogenphosphate) monohydrogenphosphate tetrahydrate, 6C(3)H(7)N(6)(+).4H(2)PO(4)(-).HPO(4)(2-).

3-Amino-1,2,4-triazine.

In the crystal structure of 3-amino-1,2,4-triazine, C(3)H(4)N(4), the molecules form hydrogen-bonded chains that are almost parallel to the b axis (3.2 degrees), and which are inclined to the a and c axes by approximately 21 and approximately 69 degrees, respectively. The distortion of the 1,2,4-triazine ring in the crystal is compared with gas-phase ab initio molecular-orbital calculations.

Melaminium glutarate monohydrate.

The crystal structure of the title new melaminium salt, 2,4,6-triamino-1,3,5-triazin-1-ium glutarate monohydrate, C(3)H(7)N(6)(+) x C(5)H(7)O(4)(-) x H(2)O, is built up from singly protonated melaminium residues, mono-dissociated glutarate ions and water molecules. The melaminium residues are interconnected by four N[bond]H..

Melaminium acetate acetic acid solvate monohydrate.

The crystals of the title new melaminium salt, 2,4,6-triamino-1,3,5-triazin-1-ium acetate acetic acid solvate monohydrate, C(3)H(7)N(6)(+).CH(3)COO(-).CH(3)COOH.