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In the title mol­ecule, C16H14N2O, the dihedral angle between the two phenyl rings is 23.5 (6)°. In the crystal, N-H-O hydrogen bonds link mol­ecules into chains running along the a axis.

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The asymmetric unit of the title compound, C8H7N3O5, contains two independent mol­ecules in which the amide plane is oriented at dihedral angles of 29.82 (2) and 31.17 (2)° with respect to the benzene ring. In the crystal, mol­ecules are connected via inter­molecular N—H...O hydrogen bonds, forming chains running along the b axis.

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The mononuclear title complex, [Ti(C2H6N)2(C12H11N2)2], was synthesized by the reaction of 1-phenyl-N-[(pyrrol-2-yl)methyl­idene]methanamine with Ti(NMe2)4. The TiIV atom is coordinated in a distorted octa­hedral geometry by four N atoms from two derivatized methanamine ligands and two N atoms from two dimethyl­amide ions. The dihedral angles between the pyrrole and phenyl rings in the bidentate ligands are 62.36 (9) and 78.32 (8)°. In the crystal, a weak π–π stacking inter­action [centroid–centroid distance = 3.864 (2) Å] involving centrosymmetrically related mol­ecules is observed.

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The mononuclear title compound, [Ti(C11H8ClN2)2(C2H6N)2]·C7H8, was synthesized by the reaction of N-(4-chloro­phen­yl)-2-pyrrolylcarbaldimine with Ti(C2H6N)4. The TiIV ion is situated on a twofold rotation axis and displays a distorted octa­hedral geometry defined by four N atoms from two 2-[(4-chloro­phen­yl)imino­meth­yl]pyrrol-1-ide ligands and two N atoms from two dimethyl­amine ligands. The Ti—Npyrrole bond length [2.1041 (19) Å] is longer than the Ti—Ndimethyl­amine bond length [1.9013 (19) Å]; the imine N atom exhibits the longest Ti—N bond [2.3152 (17) Å]. The toluene solvent mol­ecule is located on a twofold rotation axis running through the C atom of the methyl group. Consequently, the H atoms of the latter are rotationally disordered. The compound contains no markable hydrogen-bonding inter­actions.

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In the structure of the title compound, C7H10OS4Si, the carbonyl O atom lies in the plane of the five-membered dithiole ring with a deviation of only 0.022 (2) Å. The seven-membered ring adopts a chair conformation. The crystal packing is stabilized by S...O [3.096 (4) Å] and S...S [3.620 (4) Å] contacts, together with C—H...S inter­actions.
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