4-Aminopyridiniumtrans-diaquadioxalatochromate(III) monohydrate

Chérif, Ichraf; Abdelhak, Jawher; Zid, Mohamed Faouzi; Driss, Ahmed

doi:10.1107/s1600536811044837

Cited by 14 publications

(2 citation statements)

References 22 publications

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“…O2W-H2W monohydrate [14] seem to be the only compounds having a non-centrosymmetric structure built with the [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − complex anions so far. In the other hand, it is worth noting that the number of solvent water molecules per formula unit in 1 is higher, compared to the homologous bis(oxalato)metalate(III) salts known hitherto [7] [10] [11] [14].…”

Section: Crystal Structure Ofmentioning

confidence: 99%

Synthesis, Characterization and Thermal Analysis of an Organic-Inorganic Hybrid Salt Involving Trans-Diaquabis(oxalato-κ2O1,O2)chromate(III) Complex Anion with Piperidinium as Counter Cation

Ndong¹,

Signé²,

Kenfack³

et al. 2020

CSTA

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A new organic-inorganic hybrid salt pipéridinium trans-diaquabis(oxalato)chromate(III) tetrahydrate, (C 5 H 10 NH 2 )[Cr(C 2 O 4 ) 2 (H 2 O) 2 ]•4H 2 O (1), has been synthesized in water and characterized by FTIR and UV-Vis spectroscopies, elemental and thermal analyses and by single-crystal X-ray diffraction. 1 crystallizes in the orthorhombic non-centrosymmetric space group Cmc2 1 with the unit cell parameters a = 7.4329(3), b = 9.9356(5), c = 23.6756(11) Å, α = β = γ = 90˚, V = 1748.45(14) Å 3 and Z = 4. The structure of 1 consists of [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − mononuclear anions, piperidinium cations and uncoordinated water molecules. The Cr III ion in the complex [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − is coordinated in a slightly distorted octahedral environment by four O atoms from two chelating oxalate dianions in the equatorial plane, and two O atoms from trans-coordinated water molecules occupying the apical positions. In the crystal, N-H⋯O and O-H⋯O hydrogen bond interactions connect the components into a 3-D framework. The IR spectrum of 1 is consistent with the presence of the various molecular building constituents, namely oxalato and aqua ligands, piperidinium cations and solvent water molecules. The UV-Vis spectrum shows two absorption bands around 564 and 416 nm which are

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Section: Crystal Structure Ofmentioning

confidence: 99%

Synthesis, Characterization and Thermal Analysis of an Organic-Inorganic Hybrid Salt Involving Trans-Diaquabis(oxalato-κ2O1,O2)chromate(III) Complex Anion with Piperidinium as Counter Cation

Ndong¹,

Signé²,

Kenfack³

et al. 2020

CSTA

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“…Fdd2 and Pna2 1(Chérif, Abdelhak et al, 2012, 2011, or in the centrosymmetric space groups P2 1 /c(Chérif, Zid et al, 2012) and C2/c (Nenwa et al, 2010), depending on the nature of the subtituent and/or the position of substitution. In the present contribution, we report the structure of a homologous salt in the non-centrosymmetric I2/a space group.The asymmetric unit of the title compound is shown inFig.…”

mentioning

confidence: 99%

2-Aminopyridiniumtrans-diaquabis(oxalato-κ²O,O)chromate(III)

Nenwa

Bebga

Signé

et al. 2012

Acta Crystallogr E Struct Rep Online

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In the title hybrid salt, (C5H7N2)[Cr(H2O)2(C2O4)2], the CrIII ion is coordinated in a slightly distorted octahedral environment by four O atoms from two oxalate ligands in the equatorial plane and by two water O atoms in the axial sites. The 2-aminopyridinium cation is disordered over two sets of sites in a 0.800 (7):0.200 (7) ratio. In the crystal, N—H⋯O and O—H⋯O hydrogen bonds connect the components into a three-dimensional network. The crystal studied was an inversion twin with components in a ratio 0.75 (2):0.25 (2).

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