Reactivity of Disodium and Dilithium Tetraisopropoxonickelates (II) with Some Selected II - Acidic Ligands
| dc.contributor.advisor | Kslies, W. (PhD) | |
| dc.contributor.author | Habtegebrial, Kiros | |
| dc.date.accessioned | 2018-06-20T09:27:51Z | |
| dc.date.accessioned | 2023-11-09T16:17:41Z | |
| dc.date.available | 2018-06-20T09:27:51Z | |
| dc.date.available | 2023-11-09T16:17:41Z | |
| dc.date.issued | 1988-06 | |
| dc.description.abstract | The syntheses of dilithium and disodium tetraisopropoxonickelate( II) were achieved using a novel starting compound, Nior2 ,2DME. This nickel(II) compound wos found to be easy to prepare and a relatively stable compared to the commonly used starting an,logue, NiBr2 .2thf, which was difficult to prepare and easily hydrolized on exposure to air. Electronic spectra and magnetic moment of Nior2 .2DME indicate an octahedral type coordination of nickel(II) in solution. Jhe two alkoxonickelntes synthesized from NiDr2 .2DME were found to be identical with those prep.'Jred using NiOr2 ,2thf. Using intramolecular redox properties of the above isopropoxonickelates, a series of low valent nickel complexes were synthesized. A yellow-brownish comr1ex, Ni(prh 3)2(COD) was synthesized starting from Na2Ni(Oirr)4.2thf. White, tetrakis complexes of Ni(o) with friallyl phosphite, triphenyl phosphite, and orange to yellow-brownish bis complex of 1,2-bis(diphenYlrhosnhino)ethane were synthesized from either alkoxonickclates. In evary case, the complexes synthesized from lithium and sodium derivatives were found to be the S3me. All the above complexes were observed to be unstable in air. The results obtained sUDnort the assumption of zero-valent nickel spocies to be active in catalytic systems consisting of Ni(II) I PR 3 , and primary and primary and secondary ,lkoxides Which can be used to transfer 1,3-dienes into Jimors and oligomers | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/2217 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa Universty | en_US |
| dc.subject | Dilithium and Disodium | en_US |
| dc.title | Reactivity of Disodium and Dilithium Tetraisopropoxonickelates (II) with Some Selected II - Acidic Ligands | en_US |
| dc.type | Thesis | en_US |