In the title compound, C(28)H(27)ClN(2)O(3)S, the central imidazolidine ring adopts an envelope conformation with the C atom bearing the chloro-phenyl ring at the flap. The geometry around the S atom is distorted tetra-hedral. Three methyl-ene groups of the cyclo-hexene ring are disordered over two sets of sites [site occupancies = 0.562 (10) and 0.438 (10)]. The crystal packing is stabilized b...

A new series of platinacyclopentanes (2a-2f) and platinacycloheptanes (3a-3f) of the type [Pt(N^P)(CH2)n] (n = 4, 6) were obtained by the reaction of [Pt(COD)(CH2)n] with the appropriate iminophosphine ligand (1a-1f). These complexes were characterised using a variety of spectroscopic and analytical techniques. X-ray structure analysis of complex 2a revealed a slightly distorted square planar g...

In the title compound, C19H30O3Si, both rings adopt a half-boat conformation. Overall, the mol-ecule approximates a U-shape as the cyclo-2-ene-1,4-dione and butyl-dimethyl-sil-yloxy substituents lie to the same side of the central cyclo-hexene ring; the methyl substituent lies to the other side of the mol-ecule. In the crystal, linear supra-molecular chains along the b axis are sustained by C-H...

Mo and W MonoAryloxide-Pyrrolide (MAP) olefin metathesis catalysts can couple terminal olefins to give as high as >98% Z-products in moderate to high yields with as little as 0.2% catalyst. Results are reported for 1-hexene, 1-octene, allylbenzene, allyltrimethylsilane, methyl-10-undecenoate, methyl-9-decenoate, allylB(pinacolate), allylOBenzyl, allylNHTosyl, and allylNHPh. It is proposed that ...

In the title curcumin-ionone derivative, C(18)H(22)OS, the dihedral angle between the thia-zole ring and the mean plane through the cyclo-hexene ring is 5.16 (10)°. The mol-ecule has an E conformation for each of the olefinic bonds.

In the title compound, C16H14O, the cyclo-hexene ring has a half-chair conformation. The mean plane, calculated through all non-H atoms of the mol-ecule, except for the central CH2 atoms of the cyclo-hexene ring, which deviate by 0.340 (3) and -0.369 (3) Å from this mean plane, has an r.m.s. deviation of 0.012 Å. In the crystal, there are C-H⋯π contacts present, resulting in the formation of zi...

2. Fluka nitromethane ( ^ 99.7 mole % ) and the following Fluka hydrocarbons: trans-2-pentene ( ~ 9 9 m o l e % ) , cis-2-hexene ( ^ 9 9 . 5 ) , trans-2hexene ( ~ 99), trans-3-hexene 99), trans-2heptene 99), trans-3-heptene 99), 1-octene (99.73), trans-2-octene ( ^ 99), trans-3-octene ( ^ 9 9 ) , trans-4-octene ( ^ 99), 1-nonene ( > 97), trans-2nonene ( ^ 99), trans-3-nonene ( ^ 99), trans-4-no...