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undergraduate thesis
Organometalni spojevi prijelaznih metala d-bloka
završni rad
2021. urn:nbn:hr:167:677461
Medaković, Damjan
University of Split
Faculty of Chemistry and Technology
Division of Chemistry

Cite this document

Medaković, D. (2021). Organometalni spojevi prijelaznih metala d-bloka : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:677461

Medaković, Damjan. "Organometalni spojevi prijelaznih metala d-bloka : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:677461

Medaković, Damjan. "Organometalni spojevi prijelaznih metala d-bloka : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:677461

Medaković, D. (2021). 'Organometalni spojevi prijelaznih metala d-bloka : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 19 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:677461

Medaković D. Organometalni spojevi prijelaznih metala d-bloka : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 November 19] Available at: https://urn.nsk.hr/urn:nbn:hr:167:677461

D. Medaković, "Organometalni spojevi prijelaznih metala d-bloka : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:677461

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Metadata
TitleOrganometalni spojevi prijelaznih metala d-bloka : završni rad
Title (english)Organometallic compounds of the d-block transition metals : bachelor thesis
AuthorDamjan Medaković
MentorBoris-Marko Kukovec (mentor)
Committee memberVesna Sokol (predsjednik povjerenstva)
Committee memberBoris-Marko Kukovec (član povjerenstva)
Committee memberMarina Zekić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Chemistry)
Split
Defense date and country2021-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Kemija organometalnih spojeva smatra se u isto vrijeme starim i novim dijelom znanosti. Spojevi koji posjeduju najmanje jednu kovalentnu vezu između atoma ugljika i atoma metala nazivaju se organometalni spojevi. Metal u metalnim karbonilima istog koordinacijskog broja poput oksidacijskog stanja podliježe 18–elektronskom pravilu. Mingosovo pravilo nalazi primjenu pri brojanju ukupnog broja valentnih elektrona organometalnih spojeva d-bloka. Tim pravilima određivanjem broja elektrona dolazi se do spoznaje o strukturi određenog spoja. Organometalni spojevi prijelaznih elemenata su nestabilni zbog nepopunjenih d-orbitala i težnje organskih skupina da se eliminiraju kao olefini uz stvaranje metalnih hidrida (eliminacija vodika u β- položaju). Problem nestabilnosti rješava se odabirom adekvatnih liganada poput stabilizacijskih (CO) ili onih koji nemaju β-vodik (W(CH 2 SiMe 3 ) 6 ) ili onih čijem je β-vodiku teško pristupiti (Cr(CMe 3 ) 4 ) Ligandi koji čine komplekse s metalima prijelazne skupine elemenata su alkenski, alilni, dienski, polienski i kompleksi s cikličkim polienima. Najvažnije organometalne reakcije su supstitucija CO liganda, eliminacija β-vodika, eliminacija α-vodika, oksidativna adicija, te migracija vodika i alkila.
Abstract (english)
The chemistry of organometallic compounds is considered to be both an old and a new part of science. Compounds that possess at least one covalent bond between a carbon atom and a metal atom are called organometallic compounds. Metal in metal carbonyls of the same coordination number as the oxidation state is subject to the 18 - electronic rule. The Mingos rule finds application in counting the total number of valence electrons of d-block organometallic compounds. By these rules, the number of electrons determines the structure of a particular compound. Organometallic compounds of transition elements are unstable due to unfilled d-orbitals and the tendency of organic groups to be eliminated as olefins with the formation of metal hydrides (elimination of hydrogen in the β-position). The problem of instability is solved by selecting adequate ligands such as stabilizing (CO) or those that do not have β-hydrogen (W(CH 2 SiMe 3 ) 6 ) or those whose β-hydrogen is difficult to access (Cr(CMe 3 ) 4 ). Ligands that form complexes with transition metals are alkene, allyl, diene, polyene and cyclic polyenes. The most important organometallic reactions are CO ligand substitution, β-hydrogen elimination, α-hydrogen elimination, oxidative addition, and hydrogen and alkyl migration.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:677461
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-11-29 12:37:11