Tris(1-phenyl-3,5-dimethylpyrazole)silver(I) nitrate

Francisco, R. H. P.; Mascarenhas, Yvonne Primerano; Lechat, J. R.

doi:10.1107/s0567740879002910

Cited by 17 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This fact is reflected in the geometric configuration of the pyrazole ring. In the oxalic case the C(2)-C(3) distance is shorter than the C(1)-C(2) as expected in neutral pyrazole (1,16,17). In the perchlorate case where the two nitrogen atoms behave as pyrrolic, the C(2)-C(3) distance is essentially identical to the C(1)-C(2) as it was found in [PDMPH]+NO;(5).…”

Section: Discussionsupporting

confidence: 49%

“…The structure of 1-phenyl-3,5-dirnethylpyrazole (PDMP) has been determined in some metal complexes (1)(2)(3)(4) where it [PDMPH]+CIO; A solution of perchloric acid was added to a boiling solution of appears as a neutral group. In the adduct with nitric acid ( 5 ) it PDMP in ketone to obtain a final molar proportion of The has been found to be positively charged, forming a strong solution was continuously stirred and evaporated to half its original complex with the nitrate anion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrogen bonding in the crystal structures of the adducts between 1-phenyl-3,5-dimethylpyrazole with oxalic and perchloric acids

Zukerman-Schpector¹,

Castellano²,

Oliva³

et al. 1984

Can. J. Chem.

View full text Add to dashboard Cite

Can. J. Chem. 62, 725 (1984). The crystal structures of the title compounds have been determined from diffractometric X-ray data and refined by full-matrix least-squares to final R factors of 0.057 and 0.071 for the oxalic and perchloric adducts respectively.The space groups and cell dimensions are: (oxalic) C2/c, a = 16.516(3), b = 11.685(2), c = 12.587(3) A, p = 107.1 l(2)" with Z = 4; (perchloric) Pbca, a = 16.204(3), b = 15.329(6), c = 10.296(3) A with Z = 8.In both structures the complex is stabilized by a strong hydrogen bond between the N(2) of the 1-phenyl-3,5-dimethylpyrazole (PDMP) group and an oxygen of the acid. In the oxalic adduct the PDMP group is neutral and the N(2) atom acts as a proton acceptor, while in the perchloric complex the PDMP group is positively charged with the N(2) atom acting as a proton donor. [Traduit par le journal]

show abstract

Section: Discussionsupporting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Hydrogen bonding in the crystal structures of the adducts between 1-phenyl-3,5-dimethylpyrazole with oxalic and perchloric acids

Zukerman-Schpector¹,

Castellano²,

Oliva³

et al. 1984

Can. J. Chem.

View full text Add to dashboard Cite

show abstract

“…It is known that in the pyrazole molecule the C(2)-C(3) distance is systematically shorter than the C(1)-C(2) one (1,13,14). In the present case the two nitrogen atoms behave as pyrrolic and unless there is a strong interaction between the p , electrons of the phenyl and pyrazole groups the two C-C internuclear distance should be identical.…”

Section: Discussionmentioning

confidence: 99%

The crystal structure of 1-phenyl-3,5-dimethyl pyrazolium nitrate

Zukerman-Schpector¹,

Castellano²,

Massabni³

et al. 1982

Can. J. Chem.

View full text Add to dashboard Cite

Can. J. Chem. 60,97 (1982). The crystal structure of the title compound has been determined from diffractometric X-ray data and refined by full-matrix least-squares to a final R factor of 0.055 from 1099 independent reflections above background.The space group and cell dimensions are : P2,ln, a = 7.916(2), b = 10.934(3), c = 13.638(1) A, P = 97.37(1)", with Z = 4.The 1-phenyl-3,5-dimethylpyrazole group was found to be positively charged, forminga strong ionic complex with the nitrate ion. The dihedral angle between the phenyl and pyrazole rings, corresponding to the minimum intramolecular van der Waals energy, was calculated and compared with those reported in different complexes of known structure, showing that there is a narrow range of rotational freedom about the N(1)-C(6) bond.J . ZUKERMAN-SCHPECTOR, E. E. CASTELLANO, A. C. MASSABNI et A. DERBLI PINTO. Can. J. Chem. 60, 97 (1982). On a determine la structure cristalline du compose mentionne dans le titre a partir de donnees de diffraction de rayons X et on I'a affine par la methode des moindres carrls (matrice entiere) jusqu'a une valeur conventionnelle de R = 0,055 pour 1099 reflexions independantes avec a = 7,916(2), b = 10,934(3), c = 13,638(1) A, P = 97,37(1)", Z = 4, groupe d'espace P2,ln.On a trouve que le groupe phenyl-1 dimethyl-3.5 pyrazole est charge positivement, formant un complexe ionique fort avec I'ion nitrate.On a calcule I'angle diedre entre les noyaux phenyle et pyrazole correspondant a I'energie de van der Waals intramoleculaire minimale et on l'a compare a ceux rapportis pour differents complexes de structure connue; ceci revele l'existence d'un domaine etroit de rotation libre autour de la liaison N ( l t C ( 6 ) .[Traduit par le journal]

show abstract

“…Cyano groups were placed at the ortho position of every other repeat (36), forming two roughly trigonal planar coordination sites [53]. The distance from the CN nitrogen to Supramolecular Organization of Foldable Phenylene Ethynylene Oligomers 109 the helical axis is about 2.1 Å, consistent with metal-nitrile ligation [54,55]. The metal chosen for these studies needed to match the coordination spheres of 36; therefore Ag + , which typically adopts a trigonal planar geometry, was chosen in the form of AgO 3 SCF 3 .…”

Section: Modification Of the Folding Reactionmentioning

confidence: 72%

“…To determine the effect of the imine bond on the native mPE system, the aggregation of a hexameric iminecontaining macrocycle (55) was studied [83]. Increasing either the concentration or solvent polarity of solutions of 55 led to upfield shifting of the 1 H NMR resonances, indicative of aggregation.…”

Section: Imine-containing Oligomersmentioning

confidence: 99%