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1-Ammonio-1-phosphono-pentane-1-phospho-nic acid.

ABSTRACT: The title compound, C(5)H(15)NO(6)P(2), was obtained by the reaction of penta-nenitrile with PCl(3) followed by the dropwise addition of water. The asymmetric unit contains one mol-ecule, which exists as a zwitterion with a positive charge on the -NH(3) group and a negative charge on one of the phospho-nic O atoms. The crystal structure displays N-H⋯O and O-H⋯O hydrogen bonding, which creates a three-dimensional network.

SUBMITTER: Bon VV

PROVIDER: S-EPMC2959911 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Ferrocenyl-phospho-nic acid.

Project description:In the title compound, [Fe(C(5)H(5))(C(5)H(6)O(3)P)], the phosphate group is bonded to the ferrocene unit with a P-C bond length of 1.749?(3)?Å. In the crystal, six ferrocenyl-phospho-nic acid mol-ecules are connected by 12 strong inter-molecular O-H?O hydrogen bonds, leading to the formation of a highly distorted octa-hedral cage. The volume of the octa-hedral cage is about 270?Å(3).

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A second triclinic polymorph of (1-ammonio-1-phosphono-eth-yl)phospho-nate.

Project description:The asymmetric unit of the second polymorph of the title compound, C(2)H(9)NO(6)P(2), contains one mol-ecule existing as a zwitterion. The N atom of the ammonio group is protonated and one of the phospho-nic acid groups is deprotonated. Bond lengths and angles are similar in both polymorphs. Besides the differences in cell parameters, the most significant structural difference between this structure and that of the first polymorph [Dudko, Bon, Kozachkova, Tsarik & Pekhno (2008 ▶), Ukr. Khim. Zh.74, 104-106] is the presence of strong symmetric hydrogen bonds between neighbouring phospho-nate groups. H atoms involved in these hydrogen bonds are located at inversion centres and O⋯O distances are observed in the range 2.458 (5)-2.523 (5) Å. These bonds and additional O-H⋯O and N-H⋯O hydrogen bonds inter-link the mol-ecules, giving a three-dimensional supromolecular network.

| S-EPMC3151912 | biostudies-literature

Methyl-phospho-nic acid, CH3PO(OH)2.

Project description:The asymmetric unit of the title compound, CH5O3P, contains two independent mol-ecules with nearly identical bond lengths and angles. In the crystal, each of the mol-ecules acts as acceptor (P=O) and donor (P-OH) of four hydrogen bonds to three adjacent mol-ecules, resulting in the formation of two different bilayers (one for each mol-ecule) stacked perpendicular to the a axis in the crystal.

| S-EPMC3998494 | biostudies-literature

Tetra-aqua-bis[(1-ammonio-1-phosphono-ethyl)phospho-nato]zinc(II) tetra-hydrate.

Project description:The title compound, [Zn(C(2)H(8)NO(6)P(2))(2)(H(2)O)(4)]·4H(2)O, was synthesized by the reaction of ZnCl(2) with 1-amino-ethane-1,1-diyldiphospho-nic acid in aqueous solution. The asymmetric unit contains one-half of the complex and two water mol-ecules of solvation. The Zn atom occupies a special position on an inversion centre. This results in a slightly distorted octa-hedral coordination environment, which consists of the O atoms from two phospho-nic acids and four water mol-ecules. The crystal structure displays N-H?O and O-H?O hydrogen bonding, which creates a three-dimensional network.

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Bis(phenyl-phospho-nic) anhydride.

Project description:The asymmetric unit of the title compound, C(12)H(12)O(5)P(2), contains four independent mol-ecules, generating two dimers via pairs of inter-molecular O-H?O hydrogen bonds, forming R(2) (2)(8) rings. The two aryl rings of each mol-ecule form dihedral angles of 108.6?(1), 103.2?(1), 12.5?(2) and 8.1?(2)° in the four mol-ecules.

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Crystal structure of bis-[(1-ammonio-1-phosphono-eth-yl)phospho-nato]tetra-aqua-cadmium dihydrate: a powder X-ray diffraction study.

Project description:In the title compound, [CdL 2(H2O)4]·2H2O [L = (1-ammonio-1-phosphono-eth-yl)phospho-nate, C2H8NO6P2 (-)], the Cd(II) ion is situated on an inversion centre being coordinated by four aqua mol-ecules in the equatorial plane and two phosphonate O atoms from two deprotonated L ligands in the axial positions in a distorted octa-hedral geometry. The asymmetric unit contains one-half of the complex mol-ecule and one lattice water mol-ecule. The ligand L exists in a zwitterionic form, with a positive charge on the NH3 group and a negative charge on the O atom of the non-coordinating phospho-nate group, and with an intra-molecular O-H⋯O inter-action forming an S(6) ring motif and two intra-molecular N-H⋯O inter-actions each generating an S(5) ring motif. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link the complex mol-ecules into a three-dimensional network in which the voids of 38 Å(3) are filled with ordered lattice water mol-ecules, which are also involved in O-H⋯O hydrogen bonding.

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Ammonium dihydrogen (1-ammonio-pentane-1,1-di-yl)diphospho-nate.

Project description:The title compound, NH(4) (+)·C(5)H(14)NO(6)P(2) (-), was obtained from 1-ammonio-1-phosphono-pentane-1-phospho-nic acid and ammonium hydroxide in aqueous solution. The asymmetric unit of title compound contains one molecule, which consists of an ammonium cation and an aminodiphosphonic anion with the H atoms transferred from the phosphonic acid group to the amino group. The crystal structure shows a three-dimensional network of O-H?O and N-H?O hydrogen bonds which stabilize the structure.

| S-EPMC2977313 | biostudies-literature

(R)-(1-Ammonio-eth-yl)phospho-nate.

Project description:The title compound, C(2)H(8)NO(3)P, crystallizes in its zwitterionic form H(3)N(+)CH(CH(3))PO(O(-))(OH). In the crystal, the molecules are linked by N-H?O and O-H?O hydrogen bonds.

| S-EPMC3008088 | biostudies-literature

(R)-(1-Ammonio-prop-yl)phospho-nate.

Project description:The title compound, C(3)H(10)NO(3)P, crystallizes in its zwitterionic form, H(3)N(+)CH(C(2)H(5))PO(O(-))(OH), with the asymmetric unit being composed by two of such entities (Z' = 2). The crystal packing leads to a sequence of hydro-phobic and hydro-philic layers. While the hydro-phobic layer comprises the aliphatic substituent groups, the hydro-philic one is held together by a series of strong and rather directional N(+)-H?O and O-H?O hydrogen bonds.

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Hydrogen 4-ammonio-phenyl-phospho-n-ate.

Project description:The title compound, C(6)H(8)NO(3)P, is isostructural with p-arsanilic acid. It exists as the zwitterion H(3)N(+)C(6)H(4)PO(3)H(-). In the crystal, mol-ecules are linked by O-H⋯O and N-H⋯O hydrogen-bond bridges, giving a three-dimensional network structure. The strongest hydrogen bonds are formed between adjacent PO(3)H groups with O⋯O distances of 2.577 (2) Å.

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