1-Carbamoylguanidinium hydrogenselenite

“…As shown in Figure (Bremner & Harrison, 2002;Bremner & Harrison, 2003;Ritchie & Harrison, 2003). Strong N-H···Cl hydrogen bonds link the organic part to the inorganic moiety assuming the crystal cohesion.…”

Section: Data Collectionmentioning

confidence: 98%

Poly[bis(1-carbamoylguanidinium) [tri-μ-chlorido-dichloridobismuthate(III)]]

Ferjani

Boughzala

Driss

2012

Acta Crystallogr E Struct Rep Online

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“…The crystal structure of 1 consists of a bis(triphenylphosphine)iminium cation, a hydrogen selenate(IV) anion, a dichloromethane and a water molecule. The crystal structures of hydrogen selenate(IV) of alkali metals or ammonium have been largely reported in the literature [19][20][21], while relatively few phases containing hydrogen selenate(IV) and organic nitrogen cations have been described until now [22][23][24][25][26][27][28][29]. Some relevant features of the structure of 1 are reported in Figure 1.…”

Section: Resultsmentioning

confidence: 98%

“…A dichloromethane molecule is also present in the crystal packing, which is involved in interactions with another dichloromethane and with a water molecule through the H atoms. Considering the structures reported in the Cambridge Crystallographic Data Centre that are comprised of hydrogen selenate(IV) anions of nitrogen containing cations, usually a strong network of hydrogen bonds developing in the entire three-dimensional array of the crystal packing is observed [22][23][24][25][26][27][28][29]. For example, the reported crystal structure of the ammonium hydrogen selenate(IV) [19], which is the simplest of this type of compounds, is consolidated by a network of hydrogen bonds, with donor [22], anilinium [23], L-triptophanium [29], 1-carbamoylguanidinium [24], L-argininium [25], N-N -diphenylguanidinium [26], cytosinium [27], and several organoammonium cations described by Lukevics et al [28] separations, these bonds vary in strength from fairly strong to very weak.…”

Section: Resultsmentioning

confidence: 99%

Role of Bis(triphenylphosphine)iminium Cation [PNP]+ on the Crystal Packing of [PNP]+[HSeO3]− Solvate Salt

Canossa

Graiff

2018

Crystals

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Selenate(IV) and hydrogen selenate(IV) salts of bulky cations are very interesting compounds for synthetic and kinetic studies. In this work, bis(triphenylphosphine)iminium ([PNP] +) chloride has been used, which aims to synthesize the corresponding selenate(IV) salt by an exchange reaction in the aqueous solution and subsequent crystallization by solvent evaporation. Unexpectedly, the procedure afforded a solvate form of the [PNP] + [HSeO 3 ] − salt (1). In this solid phase, which has a structure that is determined by Single Crystal XRD, the anion tends to maximize the interactions with itself, although it leaves the cationic moiety to have only weak interactions with the anions and the solvent molecules. In turn, the latter builds a network of effective hydrogen bonds. This behavior opposes the general tendency of selenite(IV) and hydrogen selenite(IV) compounds, since these anions are commonly found to have formed effective hydrogen bonds with surrounding chemical species. Moreover, as the exchange reaction is non-quantitative, the exceeding traces of the starting bis(triphenylphosphine)iminium chloride reagent reacted with bis(acetonitrile)dichloropalladium(II) to form the bis(triphenylphosphine)iminium hexachloropalladate (2). In the solid phase, [PNP] + causes the absence of strong supramolecular interactions, which highlights the peculiar behavior of the cation in the crystal packing of its solid phases.

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“…However, two of the products provided compensation in the form of interesting crystal structures, which are presented here: Bis(isobutylammonium) selenite 1 and its sesquihydrate. As far as we are aware, there have been few studies of selenites with protonated amines as cations; a search of the Cambridge Database [3] revealed just one such selenite, propane-1,2-diaminium selenite mono-0932-0776 / 06 / 1100-1401 $ 06.00 c 2006 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com hydrate [4], and one hydrogenselenite, 1-carbamoylguanidinium hydrogenselenite [5].…”

Section: Introductionmentioning

confidence: 99%

Structure of Bis(isobutylammonium) Selenite and its Sesquihydrate

Wiechoczek

Jones

2006

Zeitschrift Für Naturforschung B

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Isobutylammonium selenite and its sesquihydrate were obtained in low yields by reaction of selenium dioxide with the neat amine in the presence of small amounts of water. Both structures were determined by X-ray methods and proved to contain two independent formula units. In both cases, layer structures [(CH 3 ) 2 CHCH 2 NH 3 ] 2 [SeO 3 ] are formed in which all NH hydrogen atoms act as single hydrogen bond donors, and all selenite oxygen atoms accept two hydrogen bonds. The layers contain six independent rings; the anhydrous substance has all rings of graph set R 3 4 (10), whereas the sesquihydrate has two each of R 4 4 (12), R 2 4 (8) and R 3 4 (10). The three independent water molecules of the sesquihydrate attach themselves to the layer structure by further classical hydrogen bonds to the selenite oxygen atoms.

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1-Carbamoylguanidinium hydrogenselenite

Cited by 9 publications

References 2 publications

Poly[bis(1-carbamoylguanidinium) [tri-μ-chlorido-dichloridobismuthate(III)]]

Poly[bis(1-carbamoylguanidinium) [tri-μ-chlorido-dichloridobismuthate(III)]]

Role of Bis(triphenylphosphine)iminium Cation [PNP]+ on the Crystal Packing of [PNP]+[HSeO3]− Solvate Salt

Structure of Bis(isobutylammonium) Selenite and its Sesquihydrate

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