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Wolfgang Imhof
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809011039
Abstract: The title compound, [Fe(C5H5)(C13H9F3N)], was prepared by a condensation reaction from ferrocenylcarbaldehyde and 4-(trifluoromethyl)aniline. The cyclopentadienyl (Cp) rings are coplanar [dihedral angle = 1.4 (3)°] and the imine function is situated in the same plane. The aromatic substituent is bent out of the plane of the Cp ring to which the imine group is attached by 44.5 (4)°. The F atoms of the trifluoromethyl substituent are disordered [occupancies 0.52 (2)/0.48 (2)].
Wolfgang Imhof
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809006291
Abstract: The title compound, C17H21NS, was prepared by the condensation of thiophene-2-carbaldehyde with 2,6-diisopropylaniline. It crystallizes with two molecules in the asymmetric unit. The molecules are interconnected via a C—H...N hydrogen bond. The dihedral angles between the thiophene and phenyl rings are 81.7 (7) and 85.5 (7)°.
Wolfgang Imhof
Acta Crystallographica Section E , 2013, DOI: 10.1107/s160053681205057x
Abstract: The title compound, C14H16N2, is a pyrrole-2-carbaldimine ligand that shows an E conformation at the imine double bond. The dihedral angle between the rings is 78.3 (1)°. In the crystal, pairs of molecules form centrosymmetric dimers [graph-set descriptor is presumably R22(10)] via N—H...N hydrogen bonds between the pyrrole N—H group and the imine N atom of a neighbouring molecule.
Wolfgang Imhof
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813000573
Abstract: The title compound, [Pd(C14H15N2)2], is a square-planar palladium complex composed of two deprotonated pyrrole-2-carbaldimine ligands coordinating a central PdII atom. In the crystal, three crystallographically independent complex molecules are observed, one of which is located in a general position, whereas the PdII atoms of the other molecules are situated on crystallographic inversion centers. The aromatic substituents at the imine N atoms in the three molecules show dihedral angles of 87.6 (7)/83.64 (7), 74.3 (7) and 88.3 (7)° with respect to the corresponding PdN4 plane.
Wolfgang Imhof
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812048143
Abstract: In the title complex, [Pd(C11H9N2)2], the PdII atom is located on an inversion centre and has a square-planar coordination geometry. The phenyl substituents at the imine N atoms make a dihedral angle of 75.0 (6)° with respect to the PdN4 plane.
Wolfgang Imhof
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536808040397
Abstract: The title compound, C26H27N, was prepared by the elimination of water from N-(2,6-diisopropylphenyl)-2,2-diphenylacetamide. The angle at the central C atom of the cumulene measures 172.5 (4)°. Molecules are connected into infinite chains by intermolecular C—H...N interactions.
Wolfgang Imhof,Joachim Wunderle
Acta Crystallographica Section E , 2012, DOI: 10.1107/s160053681203560x
Abstract: In the title compound, C18H16N2, there are two independent half-molecules (A and B) in the asymmetric unit, each molecule being completed by an inversion center situated in the mid-point of the central N—N bond. The molecules themselves therefore are essentially planar with r.m.s. deviations of 0.015 (1) and 0.020 (1) , respectively. In the crystal, molecules are connected via C—H...π interactions in which only type B molecules are donors, while both A and B molecules act as acceptors. As a result, type B molecules are linked into infinite chains along b, which are interconnected by molecules of type A.
Tricarbonylbis(tricyclohexylphosphine-κP)ruthenium(0) toluene solvate
Andreas Nader,Helmar G?rls,Wolfgang Imhof
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808034211
Abstract: The title compound, [Ru(C18H33P)2(CO)3]·C7H8, shows a distorted trigonal-bipyramdial coordination around the central Ru atom, with the two phosphine ligands occupying the axial positions. Two toluene molecules per asymmetric unit with site-occupation factors of 0.5 are observed. One of them forces two of the CO ligands to enclose a wider C—Ru—C bond angle [127.5 (3)°] than in the solvent-free crystal structure of [Ru(PCy3)2(CO)3] (Cy is cyclohexyl).
Tris(tert-butyl isocyanide-κC)carbonylnickel(0)
Wolfgang Imhof,Helmar G?rls,Kathi Halbauer
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808020138
Abstract: The title compound, [Ni(C5H9N)3(CO)], was prepared from Ni(CO)4 and a tenfold excess of tert-butyl isocyanide. It crystallizes with two symmetry-independent molecules per asymmetric unit. The central Ni atom of each independent molecule has a nearly perfect tetrahedral coordination environment, comprising one carbon monoxide and three isocyanide ligands. The title compound is the first structurally characterized Ni0 compound with a mixed CO/RNC coordination.
Bis[(1-vinyl-1H-imidazol-2-yl-κN3)methanamine-κN]copper(II) bis(hexafluoridophosphate)
Alexander Schiller,Rosario Scopelliti,Wolfgang Imhof
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811050100
Abstract: In the title compound, [Cu(C6H9N3)2](PF6)2, the Cu atom is located on a crystallographic center of inversion. The coordination environment of the Cu atom is square-planar with two amino and two imidazole N atoms bonded to the metal in a trans configuration.
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