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The title compounds, C10H8N2O, (I), and C10H10N2O, (II), are two 1-phenyl-1Himidazole derivatives, which differ in the substituent para to the imidazole group on the arene ring, i.e. a benzaldehyde, (I), and an anisole, (II). Both molecules pack with different motifs via similar weak C--H--N/O interactions and differ with respect to the angles between the mean planes of the imidazole and arene rings [24.58 (7)° in (I) and 43.67 (4)° in (II)]. [ABSTRACT FROM AUTHOR]

The title compounds, C10H8N2O, (I), and C10H10N2O, (II), are two 1-phenyl-1H-imidazole derivatives, which differ in the substituent para to the imidazole group on the arene ring, i.e. a benzaldehyde, (I), and an anisole, (II). Both molecules pack with different motifs via similar weak C--H⋯N/O interactions and differ with respect to the angles between the mean planes of the imidazole and arene rings [24.58 (7)° in (I) and 43.67 (4)° in (II)]. [ABSTRACT FROM AUTHOR]

The reaction of compounds [[Pt.sub.2][Me.sub.4][(μ-S[Me.sub.2]).sub.2]] and cis-[Pt[Ph.sub.2][(S[Me.sub.2]).sub.2]] with ligands 4-(2'-[C.sub.5][H.sub.4]N) [C.sub.6][H.sub.4]CHN-C[H.sub.2]C[H.sub.2]N[Me.sub.2] (1a) and 4-(3',5'-[C.sub.4][H.sub.3][N.sub.2])[C.sub.6][H.sub.4]CHNC [H.sub.2]C[H.sub.2]N[Me.sub.2] (1b) carried out in acetone at room temperature produced compounds in which the imines act as bidentate [N,N'] ligands. Analogous compounds could be obtained in refluxing methanol when cis-[Pt[Cl.sub.2][(DMSO).sub.2]] was used as starting material. The corresponding cyclometallation processes leading to platinum(II) compounds with a tridentate [C,N,N'] ligand took place under different reaction conditions, except for metallation of 1a with cis-[Pt[Ph.sub.2][(S[Me.sub.2]).sub.2]], which could not be achieved. All compounds were characterized by usual techniques and [PtMe{4-(3',5' [C.sub.4][H.sub.3][N.sub.2])[C.sub.6][H.sub.3] CHNC[H.sub.2]C[H.sub.2]N[Me.sub.2]}] (3bMe) was also characterized crystallographically. Key words: platinum, imines, pyridyl, pyrimidyl, cyclometallation, crystal structure. Operant en solution dans l'acetone et a la temperature ambiante on a effectue la reaction des produits [[Pt.sub.2][Me.sub.4][(μ-S[Me.sub.2]).sub.2]] et cis-[Pt[Ph.sub.2][(S[Me.sub.2]).sub.2]] avec les ligands 4-(2'[C.sub.5][H.sub.4]N)[C.sub.6][H.sub.4]CHNC[H.sub.2]C[H.sub.2]N[Me.sub.2] (1a) et 4-(3',5'-[C.sub.4][H.sub.3][N.sub.2])[C.sub.6][H.sub.4]CHNC[H.sub.2] C[H.sub.2]N[Me.sub.2] (1b) et on en a isole des produits dans lesquels les imines agissent comme des ligands [N,N']-bidentates. On a aussi pu obtenir des composes analogues en operant dans le methanol au reflux en presence de cis-[Pt[Cl.sub.2][(dmso).sub.2]] utilise comme substrat. Les processus de cyclometallation correspondants qui conduisent a la formation de composes du platine(II) avec un ligand tridentate [C,N,N'] se produit aussi dans des conditions reactionnelles differentes, mais la metallation du compose 1a par le cis-[Pt[Ph.sub.2][(S[Me.sub.2]).sub.2] ne peut pas etre realisee. On a caracterise tous les produits par les techniques usuelles et on a fait appel a la diffraction des rayons X pour caracteriser le [PtMe{4-(3',5'[C.sub.4][H.sub.3][N.sub.2])[C.sub.6][H.sub.3] CHNC[H.sub.2]C[H.sub.2]N[Me.sub.2]}] (3bMe). Mots-cles: platine, imines; pyridyle, pyrimidyle, cyclometallatation, structure cristalline., [Traduit par la Redaction] Introduction Cycloplatinated compounds have been a topic of interest in the last years as a consequence of the wide range of their potential applications in many [...]

Research has been conducted on the antimony compounds used as catalysts for the polymer poly(ethyleneterphthalate) synthesis. The catalytic nature of the species has been investigated via the structural characterization of antimony ethylene glycolate compounds and catecholate derivatives.

Research discusses the usefulness of covalent metal-organic networks (CMONs) in the understanding of dimensionality controlled by the elements. Results delineate CMON materials containing varied number of metal centers produced from the in situ reduction of vanadium precursors.