The use of conductivity measurements in organic solvents for the characterisation of coordination compounds

Isolation and synthesis of biologically active carbazole alkaloids

Light-Emitting Self-Assembled Materials Based on d(8) and d(10) Transition Metal Complexes.

Organomagnesium reagents occupy a central position in synthetic organic and organometallic chemistry. Recently, the halogen-magnesium exchange has considerably extended the range of functionalized Grignard reagents available for synthetic purposes. Functional groups such as esters, nitriles, iodides, imines, or even nitro groups can be present in a wide range of aromatic and heterocyclic organomagnesium reagents. Also various highly functionalized alkenyl magnesium species can be prepared. These recent developments as well as new applications of organomagnesium reagents in cross-coupling reactions and amination reactions will be covered in this Review.

Highly functionalized organomagnesium reagents prepared through halogen-metal exchange.

The structural chemistry of metal thiolate complexes

168. Synthetic antimalarials. Part XVIII. 3-Dialkylaminoalkylaminodiphenylamines

12. The synthetic application of o-β-bromoethylbenzyl bromide. Part IV. The preparation of 2-substituted 1 : 2 : 3 : 4-tetrahydroisoquinolines

The effects of variation in the steric and electronic properties of a number of heterocyclic unidentate tertiary phosphine ligands on their ability to form five-co-ordinate tris(phosphine) complexes with nickel(II), palladium(II), and platinum(II) dihalides, have been studied.In contrast to 5-methyl- and 5-ethyl-5H-dibenzophosphole (I; R = Me, Et) which give rise to a series of five-co-ordinate complexes with the above halides, both 5-isopropyl- and 5-t-butyl-5H-dibenzophosphole (I; R = Pri, But) form only four-co-ordinate complexes of type (phos)2MX2. The nickel(II) dihalide complexes of this type have a tetrahedral structure, indicated by their magnetic and spectroscopic properties. 1H N.m.r. studies show that in solution in deuteriochloroform, the four-co-ordinate PdIIBr2 complexes of both the phosphines (I; R = Pri) and (I; R = But) have the trans-configuration and the PtIICl2 complex of (I; R = But) also has this configuration, whereas the PtIICl2 complex of (I; R = Pri) has the cis-configuration.2,8-Dimethoxy-5-phenyl-5H-dibenzophosphole (II) resembles 5-phenyl-5H-dibenzophosphole (I; R = Ph) in forming four-co-ordinate, tetrahedral, nickel(II) dihalide complexes.10-Methyl-10-phenoxaphosphine (IV; R = Me) forms five-co-ordinate tris(phosphine)MX2 complexes with NiIICl2, PdIIBr2, and PtIICl2. 10-Ethyl-10-phenoxaphosphine (IV; R = Et) forms five-co-ordinate complexes apparently only with NiIIBr2 and NiIIl2, four-co-ordinate species being formed with NiIICl2 and NiII(NCS)2 and also with PdIIBr2 and PtIICl2. 10-Phenyl-10-phenoxaphosphine (IV; R = Ph) forms only four-co-ordinate complexes with nickel salts.The seven-membered cyclic triarylphosphine, 10,11-dihydro-5-phenyl-5H-dibenzo[b,f]phosphepin (V) is unusual in forming diamagnetic, square-planar, nickel(II) dihalide complexes.

Four- and five-co-ordinate complexes of heterocyclic tertiary phosphines with nickel(II), palladium(II), and platinum(II) dihalides

539. Cyclic diarsines. Part VI. The thermal decomposition of some cyclic quaternary diarsonium dihydroxides and dibromides

343. The structure and properties of certain polycyclic indolo- and quinolino-derivatives. Part V. Derivatives of 1 : 2-dihydro-1-keto-4 : 5-dimethyl-liline

Frederick G. Mann

Papers

168. Synthetic antimalarials. Part XVIII. 3-Dialkylaminoalkylaminodiphenylamines

12. The synthetic application of o-β-bromoethylbenzyl bromide. Part IV. The preparation of 2-substituted 1 : 2 : 3 : 4-tetrahydroisoquinolines

Four- and five-co-ordinate complexes of heterocyclic tertiary phosphines with nickel(II), palladium(II), and platinum(II) dihalides

539. Cyclic diarsines. Part VI. The thermal decomposition of some cyclic quaternary diarsonium dihydroxides and dibromides

343. The structure and properties of certain polycyclic indolo- and quinolino-derivatives. Part V. Derivatives of 1 : 2-dihydro-1-keto-4 : 5-dimethyl-liline