Tris(2-meth­oxy­ethanaminium) dodeca­molybdophosphate trihydrate

The asymmetric unit of the polyoxidometalate-based organic–inorganic hybrid title compound, (C3H10NO)3[PMo12O40]·3H2O, consists of one α-Keggin-type [PMo12O40]3− polyoxido­anion, three independent [CH3–O–CH2–CH2–NH3]+ cations and three solvent water mol­ecules. The polyoxidoanion shows characteristic features with respect to bond lengths and angles. In the crystal structure, extensive inter­molecular N—H⋯O and O—H⋯O hydrogen bonding between the organic cations, inorganic anions and solvent water mol­ecules leads to a three-dimensional supra­molecular network

Piperazine-1,4-diium bis­(pyridine-2,6-dicarboxyl­ato-κ3 O 2,N,O 6)cobaltate(II) tetra­hydrate

The asymmetric unit of the title complex, (C4H12N2)[Co(C7H3NO4)2]·4H2O, consists of one piperazinediium dication, one [Co(py-2,6-dc)2]2− dianion (where py-2,6-dc is pyridine-2,6-dicarboxyl­ate) and four water mol­ecules. The piperazinediium cation adopts a chair conformation and the CoII ion is six-coordinated in an N2O4 environment, having a distorted octa­hedral geometry. In the crystal, inter­molecular O—H⋯O, N—H⋯O and weak C—H⋯O hydrogen bonds link the components, forming a three-dimensional network

p-Tolyl bis­(cyclo­hexyl­amido)­phosphinate

The P atom in the title mol­ecule, C19H31N2O2P, is in a distorted tetra­hedral configuration with the bond angles in the range 101.48 (10)–118.58 (9)°. The N—H units have a syn orientation with respect to one another. In the crystal, mol­ecules are connected via two different inter­molecular N—H⋯O(P) hydrogen bonds into chains along the a axis in which the O atom of the P=O group acts as a double acceptor

Bis(2,6-diamino­pyridinium) hydrogen phthalate nitrate monohydrate

The title hydrated salt, 2C5H8N3 +·C8H5O4 −·NO3 −·H2O, was obtained fortuitously from the reaction between 2,6-diamino­pyridine, phthalic acid and Co(NO3)2·6H2O at 343 K. The asymmetric unit consists of two crystallographically independent 2,6-diamino­pyridinium cations, a hydrogen phthalate anion, a nitrate ion and a water mol­ecule of crystallization which in the crystal structure are linked by inter­molecular O—H⋯O and N—H⋯O hydrogen bonds into a three-dimensional network. In the hydrogen phthalate anion, there is a very strong intra­molecular O—H⋯O hydrogen bond

N,N′-Bis(4-methyl­phen­yl)-N′′-(2,2,2-trichloro­acet­yl)phospho­ric triamide

The P atom in the title compound, C16H17Cl3N3O2P, is bonded in a distorted tetra­hedral geometry with the phosphoryl and carbonyl groups anti with respect to one another. In the crystal, mol­ecules are linked through (N—H)2⋯O(=P) and N—H⋯O(=C) hydrogen bonds into chains along [001]. The phosphoryl O atom acts as a double hydrogen-bond acceptor

N,N′-Dibenzyl-N′′-(2-chloro-2,2-difluoro­acet­yl)-N,N′-dimethyl­phospho­ric triamide

In the title mol­ecule, C18H21ClF2N3O2P, the P=O and N—H groups are syn to each other. The P atom adopts a slightly distorted tetra­hedral environment and the N atoms of the tertiary amine groups are bonded in an essentially planar geometry. In the crystal, pairs of inter­molecular N—H⋯O(P) hydrogen bonds form centrosymmetric dimers

N,N′-Dicyclo­pentyl-N′′,N′′-dimethyl­phospho­ric triamide

The P atom in the title mol­ecule, C12H26N3OP, has a distorted tetra­hedral configuration: its bond angles lie in the range 101.1 (2)–119.1 (2)°. The P—N bonds to the two cyclo­pentyl­amido moieties are significantly different [1.619 (4) and 1.643 (4) Å], with the shorter bond related to an anti orientation of the lone electron pair of the corresponding N atom relative to the P=O bond. The O atom of the P=O group acts as a double hydrogen-bond acceptor and is involved in two different inter­molecular N—H⋯O(P) hydrogen bonds, building R 2 2(8) rings that are further linked into chains along [001]

Pentakis(l-prolinium) dodecatungstoborate trihydrate

The title polyoxometalate-based organic-inorganic hybrid compound, (C5H10NO2)5[BW12O40]·3H2O, consists of one α-Keggin-type [BW12O40]5− polyoxoanion, five crystallographically independent l-prolinium cations and three uncoordinated water molecules. The polyoxoanion shows characteristic features with respect to bond lengths and angles. Several N—H...O and O—H...O hydrogen bonds between the organic cations, inorganic anions and crystal water molecules lead to a three-dimensional supramolecular structure

Hexakis{[1-(dimethylamino)propylidene]oxidanium} bis(dodecamolybdophosphate) N,N-dimethylpropionamide pentasolvate

In the asymmetric unit of the title salt, (C5H12NO)6[PMo12O40]2·5C5H11NO, there are two independent α-Keggin-type [PMo12O40]3− polyoxidoanions, which show characteristic features with respect to bond lengths and angles. One of the [CH3CH2C(=OH)N(CH3)2]+ cations is hydrogen bonded to the neighboring polyoxidoanion through a C=O—H...Obridge hydrogen bond. The organic molecules and the remaining organic cations form [(C5H11NO)2H]+ molecule–cation pairs, two of which lie about inversion centers, through O—H...O hydrogen bonds

Binuclear paddle-wheel platinum(II) and platinum(III) complexes containing 4-methyl-4H-1,2,4-triazole-3-thiol ligand: Synthesis, X-ray studies, and spectroscopic characterization

<p>The complex [Pt₂(μ-mtrzt)₄(mtrzt)₂] (<b>1</b>) was synthesized from the reaction of a mixture of 4-methyl-4H-1,2,4-triazole-3-thiol (Hmtrzt) and ethylenediamine (en) with K₂PtCl₄ in CH₃OH/H₂O (2:1) as solvent. The complex [Pt₂(μ-mtrzt)₄] (<b>2</b>) was synthesized by the same procedure as described for preparation of complex <b>1</b> but in the absence of ethylenediamine. Both complexes were characterized by elemental analysis, IR,¹H NMR,¹³C{¹H}NMR, UV-Vis, as well as luminescence spectroscopy and their structures were analyzed by single-crystal X-ray diffraction method. The X-ray structure determinations show that complexes of <b>1</b> and <b>2</b> have binuclear structures in a <i>paddle</i>-<i>wheel</i> fashion with Pt-Pt distances of 2.6628(7) and 2.7977(16)Å, respectively. In complex <b>1</b>, each platinum(III) atom has a distorted octahedral coordination geometry with the sulfur atom and the second platinum subunit in axial positions and two nitrogen and two sulfur atoms in equatorial positions. Also, in complex <b>2</b>, each platinum(II) atom has a distorted square-pyramidal coordination geometry with the second platinum subunit in axial position and two nitrogen and two sulfur atoms in equatorial positions. In addition, intermolecular C‒H···N and C‒H···S hydrogen bonds in <b>1</b> and <b>2</b> as well as intermolecular anagostic C‒H···Pt and C‒H···π interactions in <b>2</b> are effective in the stabilization of the crystal packing of these complexes.</p