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  1. Article ; Online: Investigating the Conformations of a Family of [M 2 L 3 ] 4+ Helicates Using Single Crystal X-ray Diffraction

    Matthew J. Wallis / Hyunsung Min / Leonard F. Lindoy / Feng Li

    Molecules, Vol 28, Iss 1404, p

    2023  Volume 1404

    Abstract: We present five new dinuclear triple helicate compounds of types [Mn 2 L 3 ](ClO 4 ) 4 , [Co 2 L 3 ](BF 4 ) 4 , [Ni 2 L 3 ](BF 4 ) 4 , [Cu 2 L 3 ](BF 4 ) 4 , and [Zn 2 L 3 ](BF 4 ) 4 , where L is a previously reported semi-rigid ligand incorporating two ... ...

    Abstract We present five new dinuclear triple helicate compounds of types [Mn 2 L 3 ](ClO 4 ) 4 , [Co 2 L 3 ](BF 4 ) 4 , [Ni 2 L 3 ](BF 4 ) 4 , [Cu 2 L 3 ](BF 4 ) 4 , and [Zn 2 L 3 ](BF 4 ) 4 , where L is a previously reported semi-rigid ligand incorporating two α-diimine primary donor groups and two secondary 4-pyridyl donor groups. All complexes have been characterized in both solution and the solid state. Single crystal X-ray diffraction studies were used to probe the variation in the respective helical structures as the coordinated metal ion was altered, including the effect on the orientations of the secondary binding domains. The influence of the metal ion size, the spin state in the case of Fe(II), and the presence of Jahn-Teller distortions on the overall helical structure has been investigated. These results form a basis for the design and construction of new large metallosupramolecular architectures which manifest properties associated with the constituent helical metalloligand units.
    Keywords metallosupramolecular ; helicate ; transition metal ; metalloligand ; Organic chemistry ; QD241-441
    Subject code 290
    Language English
    Publishing date 2023-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Self-Assembly of a Rare High Spin Fe II /Pd II Tetradecanuclear Cubic Cage Constructed via the Metalloligand Approach

    Hyunsung Min / Alexander R. Craze / Takahiro Taira / Matthew J. Wallis / Mohan M. Bhadbhade / Ruoming Tian / Daniel J. Fanna / Richard Wuhrer / Shinya Hayami / Jack K. Clegg / Christopher E. Marjo / Leonard F. Lindoy / Feng Li

    Chemistry, Vol 4, Iss 38, Pp 535-

    2022  Volume 547

    Abstract: Polynuclear heterobimetallic coordination cages in which different metal cations are connected within a ligand scaffold are known to adopt a variety of polyhedral architectures, many of which display interesting functions. Within the extensive array of ... ...

    Abstract Polynuclear heterobimetallic coordination cages in which different metal cations are connected within a ligand scaffold are known to adopt a variety of polyhedral architectures, many of which display interesting functions. Within the extensive array of coordination cages incorporating Fe(II) centres reported so far, the majority contain low-spin (LS) Fe(II), with high-spin (HS) Fe(II) being less common. Herein, we present the synthesis and characterisation of a new tetradecanuclear heterobimetallic [Fe 8 Pd 6 L 8 ](BF 4 ] 28 ( 1 ) cubic cage utilising the metalloligand approach. Use of the tripodal tris-imidazolimine derivative ( 2 ) permitted the formation of the tripodal HS Fe(II) metalloligand [FeL](BF 4 ) 2 ·CH 3 OH ( 3 ) that was subsequently used to form the coordination cage 1 . Magnetic and structural analyses gave insight into the manner in which the HS environment of the metalloligand was transferred into the cage architecture along with the structural changes that accompanied its occupancy of the eight corners of the discrete cubic structure.
    Keywords cubic cage ; metalloligand ; tripodal ligand ; heterobimetallic ; Chemistry ; QD1-999
    Subject code 290
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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