Key indicators: single-crystal X-ray study; T = 173 K; mean (C-C) = 0.004 Å; R factor = 0.040; wR factor = 0.141; data-to-parameter ratio = 15.1.The asymmetric unit of the title compound, C 7 H 10 N + ÁCl À ÁH 2 O, contains a 2-methylanilinium cation, a chloride anion and one molecule of water. The crystal structure consists of alternating layers of hydrophobic and hydrophilic zones of o-toluidine along the c axis. The water molecules and the chloride anions are sandwiched between these layers. A large number of cation-anion, cation-water and water-anion hydrogen bonds result in a two-dimensional network which reinforces the cohesion of the ionic structure. Experimental Crystal dataC 7 H 10 N + ÁCl À ÁH 2 O M r = 161.63 Monoclinic, P2 1 =c a = 8.1871 (5) Å b = 7.4046 (4) Å c = 14.7415 (5) Å = 94.600 (4) V = 890.78 (8) Å 3 Z = 4 Mo K radiation = 0.37 mm À1

The reaction between [M(acac)3] (M = Fe, Co, acac = acetylacetonate) and the diamino-bis(phenol) proligands (2-OH-3,5t Bu2-C6H2CH2)2NCH2(2-NC5H4) (H21) and (2-OH-5t Bu-C6H3CH2)2NCH2CH2CH2N(CH3)2 (H22) afforded the [κ 4-(N2,O2)M(acac)] complexes [Fe(1)(acac)] (3), [Fe(2)(acac)] (4), [Co(1)(acac)] (5) and [Co(2)(acac)] (6) in moderate yields after crystallization. The proposed formulas were supported by various analytical data (ESI-MS, FT-IR, EA, NMR), and the molecular structure of all complexes was confirmed by X-ray diffraction studies. In each octahedral complex, the diamino-bis(phenolate) ligand (1 or 2) acts as a tetradentate ligand and the coordination sphere is completed by one chelating κ 2-O2 acac ligand. Although the previously reported ligand 1 and the new ligand 2 are very similar, their coordination to the Fe III (acac) or Co III (acac) moieties varies by the arrangement of the donor atoms. While the Ophenolate donor atoms of ligand 1 were found cis to each other in the Fe III complex 3, they are trans in the Co III complex 5, and vice versa for ligand 2. Since each ligand, 1 and 2, exhibits both configuration, this structural curiosity cannot be easily explained on the basis of steric factors, i.e. ortho-substituents or N,N'-linker length.

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A new bidendate ferrocenyl phosphine/N-heterocyclic carbene (NHC) palladium complex rac-6, bearing a functionalized pendant arm for further grafting on a solid surface, has been synthesized in good yields and fully characterized. The molecular structure of proligand rac-4-BF4 and complex rac-6 were obtained by X-ray diffraction on single crystals. Kinetic studies demonstrated the good activity and stability of rac-6 in the Suzuki-Miyaura coupling of aryl bromides with arylboronic acids. The catalyst proved also to be active for the coupling of more challenging, bulky substrates such as 1-bromo-2-methylnaphthalene and naphthylboronic acid at relatively mild temperatures (40-70°C) and low loadings (0.1-0.5 mol%). Experiments carried out with various amounts of water highlighted the role of water on both activity and mechanism.

The title organic–inorganic salt, (C7H11N2)2[LaCl(H2O)8]Cl4·3H2O, consists of two 4-(dimethyl­amino)­pyridinium and one [La(H2O)8Cl]2+ cations, four chloride anions and three solvent water mol­ecules. In the crystal, the various units are connected by N—H⋯Cl, O—H⋯Cl, O—H⋯O and N—H⋯O hydrogen bonds, forming a network of alternating organic and inorganic layers. The 4-(dimethyl­amino)­pyridinium cations stack along the c axis, while the inorganic layers lie parallel to the ac plane. The chloride anions are located between these entities, forming hydrogen bonds with the NH atom of the pyridinium ions and the water mol­ecules. There are also C—H⋯Cl hydrogen bonds present involving one of the 4-(dimethyl­amino)­pyridinium cations, resulting in the formation of a three-dimensional supra­molecular architecture.