FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2025561917> ?p ?o ?g. }

• W2025561917 endingPage "1903" @default.
• W2025561917 startingPage "1895" @default.
• W2025561917 abstract "The preparation, reaction chemistry and ethylene polymerisation behaviour of low valent β-diketiminato chromium complexes are described. [(DDP)CrCl(µ-Cl)]2 (1) [DDPH = 2-{(2,6diisopropylphenyl)amino}-4-{(2,6-diisopropylphenyl)imino}pent-2-ene] is formed by treatment of CrCl3(THF)3 with LiDDP. Alkylation of 1 with AlMe3 results in the formation of the binuclear dimethyl complex [(DDP)CrMe(µ-Cl)]2 (2). In contrast, the attempted alkylation of 1 with benzylmagnesium chloride results in reduction to form the dichromium(II) complex [(DDP)Cr(µ-Cl)]2 (3). Depending on the conditions of crystallisation, 3 can be obtained as the THF adduct [3(THF)2·THF] or co-crystallised with a molecule of dibenzyl [3·Bz-Bz]. Cleavage of the dimeric unit in 1 can be achieved by the addition of carboxylates or β-diketonates to give [(DDP)CrCl(O2CR)(THF)] (R = Me 4a, Ph 4b) and [(DDP)CrCl({O(R)C}2CH)] (R = Me 5a, Ph 5b), respectively. Single crystal X-ray diffraction studies have been performed on 1, 2, 3(THF)2·THF, 3·Bz-Bz, 4a, and 5b. Complexes 1, 2 and 3(THF)2·THF are dimeric and have molecular C2h symmetry. Complex 3·Bz Bz is also dimeric but has its potential C2h symmetry removed by a significant tetrahedral distortion of the chromium coordination geometry. Compound 4a has an octahedral chromium centre coordinated to a single bidentate diketiminate ligand, a bidentate acetate, a chloride and a THF molecule. Complex 5b has a square pyramidal chromium with apical chloride and basal η2 diketiminate and diketonate ligands. The complex contains strong intramolecular C−H···π stabilising interactions. All the complexes are active in ethylene polymerisation on treatment with suitable aluminium activators, affording high molecular weight polyethylene." @default.
• W2025561917 created "2016-06-24" @default.
• W2025561917 creator A5022696254 @default.
• W2025561917 creator A5039502138 @default.
• W2025561917 creator A5062154497 @default.
• W2025561917 creator A5069677902 @default.
• W2025561917 creator A5074801878 @default.
• W2025561917 creator A5087959120 @default.
• W2025561917 date "2001-07-01" @default.
• W2025561917 modified "2023-10-14" @default.
• W2025561917 title "Synthesis, Structures and Ethylene Polymerisation Behaviour of Low Valent β-Diketiminato Chromium Complexes" @default.
• W2025561917 cites W1577234663 @default.
• W2025561917 cites W1964534673 @default.
• W2025561917 cites W1969010003 @default.
• W2025561917 cites W1969102565 @default.
• W2025561917 cites W1970841799 @default.
• W2025561917 cites W1977424361 @default.
• W2025561917 cites W1978815693 @default.
• W2025561917 cites W1984159724 @default.
• W2025561917 cites W1984666045 @default.
• W2025561917 cites W1994382997 @default.
• W2025561917 cites W1994821823 @default.
• W2025561917 cites W1997426707 @default.
• W2025561917 cites W1998458950 @default.
• W2025561917 cites W1998536125 @default.
• W2025561917 cites W1999241656 @default.
• W2025561917 cites W1999426457 @default.
• W2025561917 cites W2004246450 @default.
• W2025561917 cites W2007036206 @default.
• W2025561917 cites W2012145798 @default.
• W2025561917 cites W2020764539 @default.
• W2025561917 cites W2021740363 @default.
• W2025561917 cites W2024224469 @default.
• W2025561917 cites W2036353819 @default.
• W2025561917 cites W2036665297 @default.
• W2025561917 cites W2037785645 @default.
• W2025561917 cites W2040384604 @default.
• W2025561917 cites W2040891107 @default.
• W2025561917 cites W2041043000 @default.
• W2025561917 cites W2045626338 @default.
• W2025561917 cites W2046919549 @default.
• W2025561917 cites W2048923733 @default.
• W2025561917 cites W2049841356 @default.
• W2025561917 cites W2050571926 @default.
• W2025561917 cites W2054873826 @default.
• W2025561917 cites W2055332548 @default.
• W2025561917 cites W2064814454 @default.
• W2025561917 cites W2068474399 @default.
• W2025561917 cites W2071105954 @default.
• W2025561917 cites W2075129508 @default.
• W2025561917 cites W2079958206 @default.
• W2025561917 cites W2081054814 @default.
• W2025561917 cites W2088297251 @default.
• W2025561917 cites W2093954514 @default.
• W2025561917 cites W2093971882 @default.
• W2025561917 cites W2102816339 @default.
• W2025561917 cites W2106953084 @default.
• W2025561917 cites W2127334896 @default.
• W2025561917 cites W2134882351 @default.
• W2025561917 cites W2143906739 @default.
• W2025561917 cites W2149295256 @default.
• W2025561917 cites W2155605079 @default.
• W2025561917 cites W2324227487 @default.
• W2025561917 cites W2951168025 @default.
• W2025561917 cites W2951269504 @default.
• W2025561917 cites W4231958796 @default.
• W2025561917 doi "https://doi.org/10.1002/1099-0682(200107)2001:7<1895::aid-ejic1895>3.0.co;2-s" @default.
• W2025561917 hasPublicationYear "2001" @default.
• W2025561917 type Work @default.
• W2025561917 sameAs 2025561917 @default.
• W2025561917 citedByCount "95" @default.
• W2025561917 countsByYear W20255619172012 @default.
• W2025561917 countsByYear W20255619172013 @default.
• W2025561917 countsByYear W20255619172014 @default.
• W2025561917 countsByYear W20255619172015 @default.
• W2025561917 countsByYear W20255619172016 @default.
• W2025561917 countsByYear W20255619172018 @default.
• W2025561917 countsByYear W20255619172020 @default.
• W2025561917 countsByYear W20255619172021 @default.
• W2025561917 countsByYear W20255619172022 @default.
• W2025561917 crossrefType "journal-article" @default.
• W2025561917 hasAuthorship W2025561917A5022696254 @default.
• W2025561917 hasAuthorship W2025561917A5039502138 @default.
• W2025561917 hasAuthorship W2025561917A5062154497 @default.
• W2025561917 hasAuthorship W2025561917A5069677902 @default.
• W2025561917 hasAuthorship W2025561917A5074801878 @default.
• W2025561917 hasAuthorship W2025561917A5087959120 @default.
• W2025561917 hasConcept C108204754 @default.
• W2025561917 hasConcept C115624301 @default.
• W2025561917 hasConcept C116569031 @default.
• W2025561917 hasConcept C155647269 @default.
• W2025561917 hasConcept C161790260 @default.
• W2025561917 hasConcept C164361826 @default.
• W2025561917 hasConcept C170493617 @default.
• W2025561917 hasConcept C178516000 @default.
• W2025561917 hasConcept C178790620 @default.
• W2025561917 hasConcept C185592680 @default.
• W2025561917 hasConcept C198819137 @default.

• next