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Start Over Author "Karel Mach" Journal acta crystallographica. section c, crystal structure communications
2 results on '"Karel Mach"'

1. [Mu-1kappa2O,O':2(eta5)-Cyclopentadienylcarboxylato][2(eta5)-diphenylphosphinocyclopentadienyl]bis[1,1(eta5)-tetramethylcyclopentadienyl]iron(II)titanium(III)

Author

Karel Mach, Petr Štěpnička, Ivana Císařová, and Jiří Kubišta

Subjects
chemistry.chemical_compound, Crystallography, Ferrocene, Chemistry, Inorganic chemistry, General Medicine, Crystal structure, General Biochemistry, Genetics and Molecular Biology, Stoichiometry
Abstract

Reacting stoichiometric amounts of 1-(diphenylphosphino)ferrocenecarboxylic acid and [Ti(eta(5)-C(5)HMe(4))(2)(eta(2)-Me(3)SiC[triple-bond]CSiMe(3))] produced the title carboxylatotitanocene complex, [[mu-1kappa(2)O,O':2(eta(5))-C(5)H(4)CO(2)][2(eta(5))-C(5)H(4)P(C(6)H(5))(2)][1(eta(5))-C(5)H(CH(3))(4)](2)Fe(II)Ti(III)] or [FeTi(C(9)H(13))(2)(C(6)H(4)O(2))(C(17)H(14)P)]. The angle subtended by the Ti/O/O' plane, where O and O' are the donor atoms of the kappa(2)-carboxylate group, and the plane of the carboxyl-substituted ferrocene cyclopentadienyl is 24.93(6) degree.

Published
2001

2. A ferrocenyl-substituted pseudotitanocene complex

Author

Petr Štěpnička, Michal Horáček, Karel Mach, and Ivana Císařová

Subjects
Steric effects, Silylation, Ligand, Stereochemistry, chemistry.chemical_element, Atom (order theory), General Medicine, Crystal structure, General Biochemistry, Genetics and Molecular Biology, chemistry.chemical_compound, Crystallography, chemistry, Molecule, Metallocene, Titanium
Abstract

The title compound, (eta(5)-cyclopentadienyl)[(1,2,3,4, 5-eta)-4-ferrocenyl-1,2,5,6-tetrakis(trimethylsilyl)cyclohexa-2, 4-dien-1-yl]titanium(II), [TiFe(C(5)H(5))(2)(C(23)H(42)Si(4))] or [Tieta(5)-C(6)H(2)Fe(eta(5)-C(5)H(4))(eta(5)-C(5)H(5))Si(CH(3))(3 )(4)(eta(5)-C(5)H(5))], possesses two directly linked metallocene units that subtend an angle of 52.9 (1) degrees (defined by the least-squares planes of the directly connected pi-ligands) associated with the steric requirements of the bulky trimethylsilyl substituents. The cyclohexadienyl ligand adopts an envelope conformation; the perpendicular distance of its eta(5)-plane to the Ti atom is 1.512 (1) A.

Published
2000

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