Exploration of cardanol-based phenolated and epoxidized resins by size exclusion chromatography and MALDI mass spectrometry.

Cardanol and cardanol derivatives are among the most important biobased materials currently investigated in green chemistry, as renewable and promising building blocks in lieu of traditional raw materials from non renewable resources, in particular owing to the olefinic linkages on the C15 alkyl side-chain. Despite the increasing interest they arouse, analytical chemistry dedicated to cardanol and associated resins has been rarely reported in the literature, found even poorer when dealing with chromatography and mass spectrometry. In this work, a thorough molecular characterization was conducted using matrix assisted laser desorption ionization (MALDI) mass spectrometry, size exclusion chromatography (SEC), and SEC-MALDI coupling to gain insights into the composition of phenolated, epoxidized, and epoxidized phenolated cardanol.

Enhanced adhesion over aluminum solid substrates by controlled atmospheric plasma deposition of amine-rich primers.

Controlled chemical modification of aluminum surface is carried by atmospheric plasma polymerization of allylamine. The amine-rich coatings are characterized and tested for their behavior as adhesion promoter. The adhesion strength of aluminum-epoxy assemblies is shown to increase according to primary amino group content and coating thickness, which in turn can be regulated by plasma power parameters, allowing tailoring the coating chemical properties.

Dichloridobis(1,10-phenanthroline-5,6-dione-κN,N')mercury(II).

In the title compound, [HgCl(2)(C(12)H(6)N(2)O(2))(2)], the Hg(II) atom is located on a twofold rotation axis and exists within a distorted octa-hedral geometry defined by a cis-Cl(2)N(4) donor set. Mol-ecules are connected into layers in the ac plane via extensive C-H⋯Cl contacts as each Cl atom forms two such inter-actions. Contacts between the layers are of the type C=O⋯π [O⋯centroid distance = 3.

pi-Stacked hydrogen-bonded sheets in N,N'-bis(4-nitrobenzylidene)ethane-1,2-diamine and pi-stacked hydrogen-bonded chains in N,N'-bis(4-nitrobenzylidene)propane-1,3-diamine.

Molecules of N,N'-bis(4-nitrobenzylidene)ethane-1,2-diamine, C16H14N4O4, (I), lie across centres of inversion in space group P2(1)/n and are linked into (10-1) sheets by a single C-H...

Isomorphous dichloro- and dibromo(2-methyl-2-phenylpropyl)phenylstannane, both displaying the same intramolecular pi-pi interaction at 120 K.

The title compounds, dichloro- and dibromoneophylphenyltin, [SnCl(2)(C(6)H(5))(C(10)H(13))] and [SnBr(2)(C(6)H(5))(C(10)H(13))], respectively, are remarkable for the 'U' shape of the molecules, whereby the two phenyl groups are brought face-to-face in an arrangement that permits intermolecular C-H.pi bonds to connect the molecules into layers parallel to (100). Intermolecular Sn-halide bonds are notably absent from the structures.

catena-Poly[[triphenyltin(IV)]-mu-hydroxo-kappa2O:O] at 120 K.

The structure of the title compound, [Sn(C(6)H(5))(3)(OH)](n), has been re-investigated at 120 (2) K. The hydroxyl H atom was readily located and the threefold coordination about the O atom is planar. There are no hydrogen bonds involving the hydroxyl group, either as donor or as acceptor.