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The University of Waikato

Germanium derivatives of cobalt carbonyl

Abstract

dc:description.abstract

This work reports the reactions of NaCo (CO)₄ with GeCl₄, GeBr₄, MeGeCl₃, MeGeBr₃, and Me₂GeCl₂ and of Co₂(CO)₈ with germanium hydride derivatives, along with the isolation and characterisation of their products. Amongst these are the new compounds ClGe[Co(CO)₄]₃, Br₂Ge[Co(CO)₄]₂, BrGe[Co(CO)₄]₃, MeGeCl₂Co(CO)₄, MeGeBr₂Co(CO)₄, MeGeCl[Co(CO)₄]₂, MeGeBr[Co(CO)₄]₂, GeCo₄(CO)₁₄ and Ge[Co(CO)₄]₄. There have also been indications of MeGe[Co(CO)₄]₃ and some spectroscopic data have been collected for Me₂GeBrCo(CO)₄. The proposed configuration for GeCo₄(CO)₁₄ is a novel extension of the already-established germanium – bridged dicobalt carbonyl derivatives. The relationships between and interconversions of three tetracobalt derivatives of Germanium are discussed. A review of Group IVB - Cobalt carbonyl derivatives is presented along with a discussion of the mass and infrared spectra of compounds prepared in this work. Some of the chlorogermyl cobalt carbonyl derivatives prepared in this work have been reacted with NaMn(CO)₅. Under this competition situation, metal carbonyl exchange has been found to be favoured over alkali halide elimination. e.g. : ClGe[Co(CO)₄]₃ + 3NaMn(CO)₅ → ClGe[Mn(CO)₅]₃ + 3NaCo(CO)₄ However, this system is subject to substituent effects. Preliminary studies on the Germanium derivatives of Rhenium and Vanadium carbonyls are also reported.

Degree

thesis:*
Name thesis:degree_name
Doctor of Philosophy (PhD)
Level thesis:degree_level
Doctoral
Grantor dc:publisher.institution
The University of Waikato
Year dc:date.issued
1978

Author and committee

dc:creator, dc:contributor.*
Author dc:creator
  • Gerlach, Robert F.
Advisor dc:contributor.advisor
  • Mackay, Kenneth M.

Rights

dc:rights
Statement dc:rights
  • All items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
Language dc:language.iso
en

Identifiers

dc:identifier.*
Handle dc:identifier.uri
https://hdl.handle.net/10289/17683

Chain of custody

source
Harvested from
University Waikato
Base URL
researchcommons.waikato.ac.nz/server/oai/request
Last updated
2026-08-21
Source record
OAI-PMH GetRecord
related terms
citation

Gerlach, Robert F.. Germanium derivatives of cobalt carbonyl. Doctoral thesis, The University of Waikato, 1978. https://hdl.handle.net/10289/17683