Synthesis, characterization and magnetic properties of four new organically templated metal sulfates [C5H14N2][MII(H2O)6](SO4)2, (MII = Mn, Fe, Co, Ni)

Hajlaoui, Fadhel; Naı̈li, Houcine; Yahyaoui, Samia; Turnbull, Mark M.; Mhiri, Tahar; Bataille, Thierry

doi:10.1039/c1dt11030f

Cited by 31 publications

(13 citation statements)

References 42 publications

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“…The values of O-Ni-O angles are between 86.04 (5) and 180.00 (7). These values agree with those for other [Ni(H 2 O) 6 ] 2+ groups (Hajlaoui et al, 2011).…”

Section: Data Collectionsupporting

confidence: 89%

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Bis(4-aminopyridinium) hexaaquanickel(II) bis(sulfate)

Sahbani¹,

Sta²,

Rzaigui³

2013

Acta Cryst E

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In the title compound, (C5H7N2)2[Ni(H2O)6](SO4)2, the NiII cation is located on an inversion centre and is coordinated by six aqua ligands in a slightly distorted octahedral coordination environment. The [Ni(H2O)6]2+ ions are connected through an extensive network of O—H⋯O hydrogen bonds to sulfate anions, leading to the formation of layers parallel to (001). The 4-aminopyridinium cations are located between these layers and are connected to the anionic framework by N—H⋯O hydrogen bonds. Weak π–π interactions between the pyridine rings, with a centroid–centroid distance of 3.754 (9) Å, provide additional stability to the crystal packing.

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“…The values of O-Ni-O angles are between 86.04 (5) and 180.00 (7). These values agree with those for other [Ni(H 2 O) 6 ] 2+ groups (Hajlaoui et al, 2011).…”

Section: Data Collectionsupporting

confidence: 89%

“…For clinical background to 4-aminopyridine, see: Judge & Bever (2006); Schwid et al (1997); Strupp et al (2004). For related compounds, see: Anderson et al (2005); Hajlaoui et al (2011); Quah et al (2010); Rotondo et al (2009).…”

Section: Related Literaturementioning

confidence: 99%

Bis(4-aminopyridinium) hexaaquanickel(II) bis(sulfate)

Sahbani¹,

Sta²,

Rzaigui³

2013

Acta Cryst E

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“…These distances are somewhat longer than those found in previously published papers of Mn II and Co II . 34 This difference in the metal-metal distance is likely due to the size and the shape of the amino groups and the radii of transition metal cations. In the structures of polymorphs 1 and 2 the supramolecular character and the molecular arrangement are insured and built from [Zn II (H 2 O) 6 ] 2+ , (SO 4 ) 2-, protonated (C 6 H 9 N 2 ) + ions and uncoordinated water molecules linked together by an extensive three-dimensional H-bonding network (Tables S3 and S4 in supporting information).…”

Section: Description Of Crystal Structures Of Polymorphs (C 6 H 9 N 2mentioning

confidence: 99%

Crystallisation, thermal analysis and acetal protection activity of new layered Zn(ii) hybrid polymorphs

et al. 2016

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Two new polymorphic mononuclear complexes, with analogous structural formula (C6H9N2)2[Zn(H2O)6](SO4)2•2H2O, of Zinc(II) templated by 2-amino-6-methylpyridinium ligand have been discovered. These polymorphic hybrid crystals, which differ only in terms of their crystal structures, were prepared in one-step synthesis under ambient conditions and investigated for their thermal and catalytic properties. Single-crystal X-ray diffraction of the obtained materials revealed that polymorphs 1 and 2 crystallise in the triclinic system, space group. In an effort to further explore the form diversity of these compounds, the structural arrangements and the intermolecular interactions such as hydrogen-bonding and π•••π interactions are discussed from which supramolecular assembly was formed. Meanwhile, these new polymorphic forms can be described as the stacking of 3D layers where the interlayer distances are 13.23 and 12.59 Å for 1 and 2, respectively. The thermal behaviour of the precursors checked by TG-DTA analysis for both zinc sulfate polymorphs and variable temperature powder X-Ray diffraction (VT-PXRD), show successive intermediate crystalline anhydrous phases upon dehydration in 1. The catalytic activity of both polymorphic structures has been tested in the acetalisation reaction of aldehydes as a benchmark process. Interestingly, both complexes showed excellent activity with almost total conversion in many examples and using MeOH as solvent and as the unique source of acetalisation.

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“…These hybrids are of interest because of their wide range of technologically advantageous properties, astounding compositional breadth, and exceptional diversity of structure. Thus, as a result of structural integration of organic cations and inorganic counterparts, magnetic [4–6], optical [7, 8], metallic conductivity [9] and catalytic [10, 11] properties have arisen in this class of chemical hybrid systems. Moreover, these materials may be used as model compounds for biological applications [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structural determination and antimicrobial evaluation of two novel CoII and ZnII halogenometallates as efficient catalysts for the acetalization reaction of aldehydes

Salah

Fendri

Bataille

et al. 2018

Chemistry Central Journal

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BackgroundComplexes of imidazole derivatives with transition metal ions have attracted much attention because of their biological and pharmacological activities, such as antimicrobial, antifungal, antiallergic, antitumoural and antimetastatic properties. In addition, imidazoles occupy an important place owing to their meaningful catalytic activity in several processes, such as in hydroamination, hydrosilylation, Heck reaction and Henry reaction. In this work, we describe the crystallization of two halogenometallate based on 2-methylimidazole. Their IR, thermal analysis, catalytic properties and antibacterial activities have also been investigated.ResultsTwo new isostructural organic-inorganic hybrid materials, based on 2-methyl-1H-imidazole, 1 and 2, were synthesized and fully structurally characterized. The analysis of their crystal packing reveals non-covalent interactions, including C/N–H···Cl hydrogen bonds and π···π stacking interactions, to be the main factor governing the supramolecular assembly of the crystalline complexes. The thermal decomposition of the complexes is a mono-stage process, confirmed by the three-dimensional representation of the powder diffraction patterns (TDXD). The catalytic structure exhibited promising activity using MeOH as solvent and as the unique source of acetalization. Moreover, the antimicrobial results suggested that metal-complexes exhibit significant antimicrobial activity.ConclusionThis study highlights again the structural and the biological diversities within the field of inorganic–organic hybrids.

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Synthesis, characterization and magnetic properties of four new organically templated metal sulfates [C5H14N2][MII(H2O)6](SO4)2, (MII = Mn, Fe, Co, Ni)

Cited by 31 publications

References 42 publications

Bis(4-aminopyridinium) hexaaquanickel(II) bis(sulfate)

Bis(4-aminopyridinium) hexaaquanickel(II) bis(sulfate)

Crystallisation, thermal analysis and acetal protection activity of new layered Zn(ii) hybrid polymorphs

Synthesis, structural determination and antimicrobial evaluation of two novel CoII and ZnII halogenometallates as efficient catalysts for the acetalization reaction of aldehydes

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