Gideon Steyl

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The title compound, C(10)H(15)NO(2), crystallized with three mol-ecules in the asymmetric unit. These three mol-ecules are quite similar except for slight differences in the torsion angles of the substituents on the ring. The isopropyl C-C-N-C torsion angles (towards the carbon next to the ethyl bound carbon), for example, are -150.63 (11), -126.77 (13) and(More)
The title compound, [Ag(C(7)H(5)O(2))(C(18)H(15)P)(2)]·CH(2)Cl(2), crystallizes with a distorted tetra-hedral geometry about the Ag(I) atom, defined by two O atoms from one tropolonate ligand and two P atoms from two triphenyl-phosphine ligands. It is an example of a new type of tropolone derivative that has not been characterized via solid-state methods.
In the title compound, [Rh(C(13)H(16)NO)(C(18)H(15)P)(CO)]·0.5C(3)H(6)O, the Rh atom exhibits a square-planar coordination geometry, being coordinated by the N and O atoms of the bidentate β-diketonato ligand, a P atom from the triphenyl-phosphine unit and a C atom from the carbonyl group. The asymmetric unit also contains a disordered half-mol-ecule, lying(More)
In the title compound, [Zr(C(5)H(4)F(3)O(2))(4)]·C(7)H(8), the Zr atom is in a square-anti-prismatic coordination geometry that comprises four O,O'-bidentate trifluoro-acetyl-acetonate ligands. The O-Zr-O bite angles of the acetonate ligands range from 75.27 (5) to 75.41 (5)°. The Zr atom is located on a twofold rotation axis.
  • Gideon Steyl
  • 2009
The title compound, [Cu(NO(3))(C(18)H(15)P)(3)]·CH(3)OH, is a methanol solvate derivative of nitratotris(triphenyl-phos-phine)copper(I). The complex crystallizes with three triphenyl-phosphine ligands coordinated to the copper centre, with an O-H⋯O hydrogen bond observed between the nitrate ligand and the methanol solvent mol-ecule. The coordination around(More)
Rhodium(i) acetylacetonato complexes of the formula [Rh(acac)(CO)(PR(3))] [acac = acetylacetonate, PR(3) = PPh(3) 1, PCyPh(2) 2, PCy(2)Ph 3, PCy(3) 4] were synthesized and the iodomethane oxidative addition to these complexes were studied. Spectroscopic and low temperature (100 K) single crystal X-ray crystallographic data of the rhodium complexes (1-4)(More)
The structure of the title compound (systematic name: 3,7-dibromo-2-hydroxy-6-isopropylcyclohepta-2,4,6-trien-1-one), C(10)H(10)Br(2)O(2), previously described by Ito, Fukazawa & Iitaka [Tetrahedron Lett. (1972), 13, 745-749], has been redetermined. Strong inter- and intramolecular hydrogen bonds, with H.O distances of 2.17 (9) and 2.06 (6) A, respectively,(More)
In the title compound, [PdBr(2)(C(19)H(17)P)(2)], the Pd(II) ion resides on a centre of symmetry and is coordinated by two Br anions [Pd-Br = 2.4266 (2) Å] and two P-donor ligands [Pd-P = 2.3462 (5) Å] in a slightly distorted square-planar geometry [P-Pd-Br = 93.528 (12)°]. Weak inter-molecular C-H⋯Br hydrogen bonds link mol-ecules into chains extended in(More)
  • Gideon Steyl
  • 2009
The title compound, [Cu(C(7)H(5)O(2))(C(18)H(12)F(3)P)(2)], a copper(I) tris-(4-fluoro-phen-yl)phosphine tropolonate derivative, is the first tropolonate complex with fluorinated aryl-phosphine ligands. The Cu(I) atom has a distorted tetra-hedral coordination; the most important geometrical parameters of the mol-ecule are: Cu-P = 2.2377 (10) and 2.2335 (15)(More)
THE TITLE COMPOUND [SYSTEMATIC NAME: (E)-2-hy-droxy-5-(phenyl-diazen-yl)cyclo-hepta-2,4,6-trien-1-one], C(13)H(10)N(2)O(2), is essentially planar with an r.m.s. deviation of 0.036 (2) Å and a dihedral angle of 1.57 (8)° between the phenyl and tropolone rings. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds into inversion dimers. The(More)