Disputation: Knut Tormodssønn Hylland

MSc. Knut Tormodssønn Hylland at the Department of Chemistry, Faculty of Mathematics and Natural Sciences, is defending the thesis « Synthesis and Reactivity of Zn Schiff Base Complexes Derived from 2, 2’-diaminobiphenyls » for the degree of Philosophiae Doctor.

Bildet av kandidaten.


Due to the ongoing Pandemic, the Disputation will be held digital using Zoom. The Chair of Defense will lead the Disputation and the Defense technician will solve technical issues.

Ex auditorio questions: The Chair of Defense will invite the audience to ex auditorio questions. These can be asked orally, by clicking "Participants - Raise hand" in the Zoom menu. The Zoom-host will grant you to speak in the meeting. 

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Order the Dissertation as PDF from this email address with the name of the Candidate: a.c.gartner@kjemi.uio.no


Trial lecture

10th. of December 10:30 AM, Zoom

Title: ''Trans-chelating ligands in organometallic catalysis''

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Conferral summary

Zn-komplekser basert på imin-ligander fra 2,2’-diaminobifenyler og ulike aromatiske aldehyder ble syntetisert og studert ved hjelp av kjernemagnetisk resonans og krystallografi. Zn-kompleksene var aktive katalysatorer for syntese av CO2-baserte polymerer. I tillegg ble en generell metode for syntese av 2,2’-diaminobifenyler utviklet.

Main research findings

Zn complexes of Schiff base ligands derived from 2,2’‑diaminobiphenyls and salicylaldehyde derivatives were synthesized and characterized by NMR and single crystal X-ray diffraction analysis. Furthermore, pentacoordinated Zn complexes of the aforementioned type, ligated by a series of nitrogen bases, were synthesized. NMR studies of the different complexes at different concentrations and temperatures, revealed information about their conformational stability. The differences were further examined by single crystal X-ray diffraction analysis. The Zn complexes were tested as catalysts for the copolymerization of CO2 and cyclohexene oxide, and were found to be selective towards a low-molecular mass polycarbonate product rather than a high-molecular mass polycarbonate product. Finally, a general method for synthesizing unsymmetrical substituted 2,2’-diaminobiphenyls was developed, using the Suzuki-Miyaura reaction as the key step. The obtained 2,2’-diaminobiphenyls were further examined as starting materials for metal Schiff base complexes.




Published Nov. 26, 2020 3:43 PM - Last modified Dec. 4, 2020 11:30 AM