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A synthetic scheme was developed for the large-scale preparation of a dimethylthiophene-fused and tetrahydroquinaldine-linked dimethylcyclopentadienyl titanium complex (2), which is a high-performance homogeneous Ziegler catalyst.
The binuclear title complex, [Zn(2)(C(22)H(28)N(3)O)(2)(C(3)H(9)OSi)(2)], has a crystallographic imposed centre of symmetry. The Zn(II) atom is coordinated by three O and one N atom from one 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentyl-phenolate ligand and two bridging trimethyl-silanolate anions in a distorted tetra-hedral geometry. The dihedral angle… (More)
The asymmetric unit of the title hydrated salt, C18H40N4P(+)·Cl(-)·2H2O, consists of two ionic mol-ecules and four water mol-ecules. The mol-ecular geometry around the penta-coordinate P atom is trigonal-bipyramidal, with a H atom and an apical N atom in axial positions and three N atoms with isobutyl substituents in equatorial positions. The Cl(-) ions and… (More)
Post-metallocenes were constructed for olefin polymerization using 1,2,3,4,7,8,9,10-octahydro[1,10]phenanthroline and 1,2,3,4-tetrahydro[1,10]phenanthroline derivatives. A series of zirconium complexes - LZrCl2(NHMe2)2 [L = 2,9-H2-C12H12N2 (4), 2,9-Me2-C12H12N2 (5), 2,9-nBu2-C12H12N2 (6), and 2,9-iPr2-C12H12N2 (7)] - and hafnium complexes - LHfCl2(NHMe2)2… (More)
The title compound, C5H11N5O, crystallized with two independent mol-ecules in the asymmetric unit. The two mol-ecules differ in the orientation of the 2-methyl-propan-2-ol unit, with the hy-droxy H atoms pointing in opposite directions. In the crystal, mol-ecules are linked via O-H⋯O and N-H⋯O hydrogen bonds, forming ribbons propagating along [10-1]. The… (More)