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  1. Article ; Online: Correction: Synthesis and spectroscopic characterization of group 4 post-metallocenes bearing (σ-aryl)-2-phenolate-6-pyridyl and -isoquinolinyl auxiliaries.

    Lo, Jerry C Y / So, Loi-Chi / Chan, Michael C W

    Dalton transactions (Cambridge, England : 2003)

    2018  Volume 47, Issue 27, Page(s) 9185

    Abstract: Correction for 'Synthesis and spectroscopic characterization of group 4 post-metallocenes bearing (σ-aryl)-2-phenolate-6-pyridyl and -isoquinolinyl auxiliaries' by Jerry C. Y. Lo et al., Dalton Trans., 2015, 44, 15905-15913. ...

    Abstract Correction for 'Synthesis and spectroscopic characterization of group 4 post-metallocenes bearing (σ-aryl)-2-phenolate-6-pyridyl and -isoquinolinyl auxiliaries' by Jerry C. Y. Lo et al., Dalton Trans., 2015, 44, 15905-15913.
    Language English
    Publishing date 2018-06-18
    Publishing country England
    Document type Journal Article ; Published Erratum
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c8dt90106f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Synthesis and spectroscopic characterization of group 4 post-metallocenes bearing (σ-aryl)-2-phenolate-6-pyridyl and -isoquinolinyl auxiliaries.

    Lo, Jerry C Y / So, Loi-Chi / Chan, Michael C W

    Dalton transactions (Cambridge, England : 2003)

    2015  Volume 44, Issue 36, Page(s) 15905–15913

    Abstract: A new series of group 4 bis(benzyl) complexes supported by (σ-aryl)-2-phenolate-6-pyridyl [O,C,N] ligands have been prepared, and all derivatives have been characterized by multinuclear NMR spectroscopy. In the (1)H NMR spectrum of the Ti derivative ... ...

    Abstract A new series of group 4 bis(benzyl) complexes supported by (σ-aryl)-2-phenolate-6-pyridyl [O,C,N] ligands have been prepared, and all derivatives have been characterized by multinuclear NMR spectroscopy. In the (1)H NMR spectrum of the Ti derivative where [N] = (ortho-F)-substituted isoquinolinyl, one of the two CH2 resonances is observed as a doublet of doublets (collapsing to a normal d upon (19)F-decoupling), whereas the [(1)H,(19)F]-HMQC correlation spectrum reveals a strong crosspeak for this dd resonance only, thus indicating the presence of intramolecular C-HF-C interactions. [(1)H,(19)F]-HMBC experiments have been performed which reveal a significant scalar component for this coupling and confirm that the interactions are genuine. The contrasting NMR spectral patterns for the (ortho-F)-pyridyl Hf analogue, which exhibits two sets of non-identical doublet of doublets for the methylene resonances, have been rationalized. The activities of the isoquinolinyl-based Ti-[O,C,N] catalysts for ethylene polymerization are superior to those of pyridyl-based congeners.
    Language English
    Publishing date 2015-09-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c5dt02497h
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Scalar coupling across [C-H···F-C] interactions in (σ-aryl)-chelating post-metallocenes.

    So, Loi-Chi / Liu, Cham-Chuen / Chan, Michael C W / Lo, Jerry C Y / Sze, Kong-Hung / Zhu, Nianyong

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2012  Volume 18, Issue 2, Page(s) 565–573

    Abstract: The nature and importance of C-H···F-C interactions is a topical yet controversial issue, and the development of spectroscopic methods to probe such contacts is therefore warranted. A series of Group 4 bis(benzyl) complexes supported by (σ-aryl)-2- ... ...

    Abstract The nature and importance of C-H···F-C interactions is a topical yet controversial issue, and the development of spectroscopic methods to probe such contacts is therefore warranted. A series of Group 4 bis(benzyl) complexes supported by (σ-aryl)-2-phenolate-6-pyridyl [O,C,N-R(1)] ligands bearing a fluorinated R(1) group (CF(3) or F) in the vicinity of the metal has been prepared. The X-ray crystal structure of the CF(3)-substituted Hf derivative features intramolecular C-H···F-C and Hf···F-C contacts. All complexes have been characterized by multinuclear NMR spectroscopy. The (1)H and (13)C NMR spectra of [M(O,C,N-CF(3))(CH(2)Ph)(2)] derivatives display coupling (assigned to (1h)J(HF) and (2h)J(CF) for Ti; (3)J(HF) and (2)J(CF) (through M···F) for Hf and Zr) between the benzyl CH(2) and CF(3) moieties. [(1)H,(19)F]-HMBC NMR experiments have been performed for the M-[O,C,N-R(1)] complexes and their [O,N,C] counterparts, revealing significant scalar coupling across the C-H···F-C interactions for Ti-[O,C,N] and [O,N,C] species.
    MeSH term(s) Carbon/chemistry ; Chelating Agents/chemistry ; Crystallography, X-Ray ; Fluorine/chemistry ; Hydrogen Bonding ; Ligands ; Models, Molecular ; Organometallic Compounds/chemistry
    Chemical Substances Chelating Agents ; Ligands ; Organometallic Compounds ; metallocene ; Fluorine (284SYP0193) ; Carbon (7440-44-0)
    Language English
    Publishing date 2012-01-09
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201102439
    Database MEDical Literature Analysis and Retrieval System OnLINE

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