Highly substituted zirconium and hafnium cyclopentadienyl bifunctional ?-diketiminate complexes ? Synthesis, structure, and catalytic activity towards ethylene polymerization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00443392" target="_blank" >RIV/61388955:_____/15:00443392 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jorganchem.2015.03.014" target="_blank" >http://dx.doi.org/10.1016/j.jorganchem.2015.03.014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jorganchem.2015.03.014" target="_blank" >10.1016/j.jorganchem.2015.03.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly substituted zirconium and hafnium cyclopentadienyl bifunctional ?-diketiminate complexes ? Synthesis, structure, and catalytic activity towards ethylene polymerization

Popis výsledku v původním jazyce

A series of tetramethyl-(Cp) and pentamethylcyclopentadienyl (Cp*) metal complexes (?5-C5Me4R)ZrCl2LCO (R = H(1), Me(2)) and (?5-C5Me4R)HfCl2LCO (R = H(3), Me(4)) where LCO is a bifunctional ?-diketiminate ligand [2-(MeO)?C6H4)]NC(Me)CHC(Me)N[2-(MeO)?C6H4)] (LCO) were prepared from corresponding tetramethyl- and (pentamethylcyclopentadienyl)metal trichlorides and the lithium precursor LiLCO. All complexes were characterized by their melting point, elemental analysis, 1H and 13C NMR spectroscopy, IR spectroscopy. In addition their solid-state structures were determined by X-ray diffraction techniques. In all cases, a pseudo-tetragonal pyramidal coordination environment of the metal centre with cyclopentadienyl ligand on the top and nearly isobidentatelybonded nitrogen atoms of the chelating LCO ligand in an open ?5-fashion was observed. The oxygen atoms positioned at the diketiminate periphery remained uncoordinated to transition metal in the solid phase as well as in solution. Besides

Název v anglickém jazyce

Highly substituted zirconium and hafnium cyclopentadienyl bifunctional ?-diketiminate complexes ? Synthesis, structure, and catalytic activity towards ethylene polymerization

Popis výsledku anglicky

A series of tetramethyl-(Cp) and pentamethylcyclopentadienyl (Cp*) metal complexes (?5-C5Me4R)ZrCl2LCO (R = H(1), Me(2)) and (?5-C5Me4R)HfCl2LCO (R = H(3), Me(4)) where LCO is a bifunctional ?-diketiminate ligand [2-(MeO)?C6H4)]NC(Me)CHC(Me)N[2-(MeO)?C6H4)] (LCO) were prepared from corresponding tetramethyl- and (pentamethylcyclopentadienyl)metal trichlorides and the lithium precursor LiLCO. All complexes were characterized by their melting point, elemental analysis, 1H and 13C NMR spectroscopy, IR spectroscopy. In addition their solid-state structures were determined by X-ray diffraction techniques. In all cases, a pseudo-tetragonal pyramidal coordination environment of the metal centre with cyclopentadienyl ligand on the top and nearly isobidentatelybonded nitrogen atoms of the chelating LCO ligand in an open ?5-fashion was observed. The oxygen atoms positioned at the diketiminate periphery remained uncoordinated to transition metal in the solid phase as well as in solution. Besides

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP106%2F10%2F0924" target="_blank" >GAP106/10/0924: Komplexy elektron deficitních přechodových kovů obsahující bifunkční beta-diketiminátové a cyklopentadienylové ligandy - design nových katalyzátorů.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Organometallic Chemistry

ISSN

0022-328X

e-ISSN

—

Svazek periodika

786

Číslo periodika v rámci svazku

JUN 2015

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

71-80

Kód UT WoS článku

000354562200010

EID výsledku v databázi Scopus

2-s2.0-84927589212