---
_id: '64010'
abstract:
- lang: eng
  text: Seven novel dirhodium coordination polymers (Rh-2-Ln) (n = 1-7) are prepared
    by employing bitopic ligands to connect dirhodium nodes. The formation of the
    framework is confirmed by attenuated total reflectance Fourier transform infrared
    (ATR-FTIR) and H-1 C-13 cross polarization magic angle spinning nuclear magnetic
    resonance (CP MAS NMR) spectroscopy. Defect sites resulting from incomplete ligand
    substitution are revealed by F-19 MAS NMR. The random stacking behavior of the
    frameworks in the obtained solid is analyzed by scanning electron microscopy (SEM)
    and X-ray diffraction (XRD). The Rh-2/O interaction in neighboring layers is investigated
    by diffuse reflectance ultra-violet visible light (DR-UV-vis) spectroscopy and
    X-ray photoelectron spectroscopy (XPS). This interaction is relevant to understand
    the catalytic behavior of various Rh-2-Ln catalysts in the cyclopropanation of
    styrene with ethyl diazoacetate (EDA). In this context, the structure-reactivity
    relationship is discussed by taking into consideration both interlayer Rh-2/O
    interactions and steric effects of side chains.
author:
- first_name: J. Q.
  full_name: Liu, J. Q.
  last_name: Liu
- first_name: Y. P.
  full_name: Xu, Y. P.
  last_name: Xu
- first_name: P. B.
  full_name: Groszewicz, P. B.
  last_name: Groszewicz
- first_name: M.
  full_name: Brodrecht, M.
  last_name: Brodrecht
- first_name: C.
  full_name: Fasel, C.
  last_name: Fasel
- first_name: K.
  full_name: Hofmann, K.
  last_name: Hofmann
- first_name: X. J.
  full_name: Tan, X. J.
  last_name: Tan
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
- first_name: G.
  full_name: Buntkowsky, G.
  last_name: Buntkowsky
citation:
  ama: 'Liu JQ, Xu YP, Groszewicz PB, et al. Novel dirhodium coordination polymers:
    the impact of side chains on cyclopropanation. <i>Catalysis Science &#38; Technology</i>.
    2018;8(20):5190–5200. doi:<a href="https://doi.org/10.1039/c8cy01493k">10.1039/c8cy01493k</a>'
  apa: 'Liu, J. Q., Xu, Y. P., Groszewicz, P. B., Brodrecht, M., Fasel, C., Hofmann,
    K., Tan, X. J., Gutmann, T., &#38; Buntkowsky, G. (2018). Novel dirhodium coordination
    polymers: the impact of side chains on cyclopropanation. <i>Catalysis Science
    &#38; Technology</i>, <i>8</i>(20), 5190–5200. <a href="https://doi.org/10.1039/c8cy01493k">https://doi.org/10.1039/c8cy01493k</a>'
  bibtex: '@article{Liu_Xu_Groszewicz_Brodrecht_Fasel_Hofmann_Tan_Gutmann_Buntkowsky_2018,
    title={Novel dirhodium coordination polymers: the impact of side chains on cyclopropanation},
    volume={8}, DOI={<a href="https://doi.org/10.1039/c8cy01493k">10.1039/c8cy01493k</a>},
    number={20}, journal={Catalysis Science &#38; Technology}, author={Liu, J. Q.
    and Xu, Y. P. and Groszewicz, P. B. and Brodrecht, M. and Fasel, C. and Hofmann,
    K. and Tan, X. J. and Gutmann, Torsten and Buntkowsky, G.}, year={2018}, pages={5190–5200}
    }'
  chicago: 'Liu, J. Q., Y. P. Xu, P. B. Groszewicz, M. Brodrecht, C. Fasel, K. Hofmann,
    X. J. Tan, Torsten Gutmann, and G. Buntkowsky. “Novel Dirhodium Coordination Polymers:
    The Impact of Side Chains on Cyclopropanation.” <i>Catalysis Science &#38; Technology</i>
    8, no. 20 (2018): 5190–5200. <a href="https://doi.org/10.1039/c8cy01493k">https://doi.org/10.1039/c8cy01493k</a>.'
  ieee: 'J. Q. Liu <i>et al.</i>, “Novel dirhodium coordination polymers: the impact
    of side chains on cyclopropanation,” <i>Catalysis Science &#38; Technology</i>,
    vol. 8, no. 20, pp. 5190–5200, 2018, doi: <a href="https://doi.org/10.1039/c8cy01493k">10.1039/c8cy01493k</a>.'
  mla: 'Liu, J. Q., et al. “Novel Dirhodium Coordination Polymers: The Impact of Side
    Chains on Cyclopropanation.” <i>Catalysis Science &#38; Technology</i>, vol. 8,
    no. 20, 2018, pp. 5190–5200, doi:<a href="https://doi.org/10.1039/c8cy01493k">10.1039/c8cy01493k</a>.'
  short: J.Q. Liu, Y.P. Xu, P.B. Groszewicz, M. Brodrecht, C. Fasel, K. Hofmann, X.J.
    Tan, T. Gutmann, G. Buntkowsky, Catalysis Science &#38; Technology 8 (2018) 5190–5200.
date_created: 2026-02-07T15:57:34Z
date_updated: 2026-02-17T16:15:22Z
doi: 10.1039/c8cy01493k
extern: '1'
intvolume: '         8'
issue: '20'
keyword:
- Chemistry
- asymmetric cyclopropanation
- c-h insertion
- carbene transformations
- carboxylates
- catalysts
- functionalization
- immobilization
- metal-organic frameworks
- nmr
- solid support
language:
- iso: eng
page: 5190–5200
publication: Catalysis Science & Technology
publication_identifier:
  issn:
  - 2044-4753
status: public
title: 'Novel dirhodium coordination polymers: the impact of side chains on cyclopropanation'
type: journal_article
user_id: '100715'
volume: 8
year: '2018'
...
---
_id: '64047'
abstract:
- lang: eng
  text: A novel strategy for the immobilization of Wilkinson’s catalyst on silica
    nanoparticles is presented, employing pyridyl linkers as anchoring groups. The
    coordination binding of the catalyst to the pyridyl linker via ligand exchange
    of the trans-phosphine group is verified by 1 D and 2 D solid-state NMR spectroscopy.
    Catalytic activities are monitored by GC employing the hydrogenation of styrene
    as model reaction, and the leaching properties as well as the robustness of the
    catalyst are investigated. The resulting immobilized catalyst shows high catalytic
    activity, which is within a factor of three comparable to the homogeneous catalyst,
    and excellent stability in leaching tests. Finally, it is efficient to produce
    hyperpolarization in solution by employing parahydrogen-enriched hydrogen gas
    for hydrogenation.
author:
- first_name: Mohamad
  full_name: Srour, Mohamad
  last_name: Srour
- first_name: Sara
  full_name: Hadjiali, Sara
  last_name: Hadjiali
- first_name: Grit
  full_name: Sauer, Grit
  last_name: Sauer
- first_name: Kai
  full_name: Brunnengräber, Kai
  last_name: Brunnengräber
- first_name: Hergen
  full_name: Breitzke, Hergen
  last_name: Breitzke
- first_name: Yeping
  full_name: Xu, Yeping
  last_name: Xu
- first_name: Heiko
  full_name: Weidler, Heiko
  last_name: Weidler
- first_name: Hans-Heinrich
  full_name: Limbach, Hans-Heinrich
  last_name: Limbach
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
- first_name: Gerd
  full_name: Buntkowsky, Gerd
  last_name: Buntkowsky
citation:
  ama: Srour M, Hadjiali S, Sauer G, et al. Synthesis and Solid-State NMR Characterization
    of a Robust, Pyridyl-Based Immobilized Wilkinson’s Type Catalyst with High Catalytic
    Performance. <i>ChemCatChem</i>. 2016;8(21):3409–3416. doi:<a href="https://doi.org/10.1002/cctc.201600882">10.1002/cctc.201600882</a>
  apa: Srour, M., Hadjiali, S., Sauer, G., Brunnengräber, K., Breitzke, H., Xu, Y.,
    Weidler, H., Limbach, H.-H., Gutmann, T., &#38; Buntkowsky, G. (2016). Synthesis
    and Solid-State NMR Characterization of a Robust, Pyridyl-Based Immobilized Wilkinson’s
    Type Catalyst with High Catalytic Performance. <i>ChemCatChem</i>, <i>8</i>(21),
    3409–3416. <a href="https://doi.org/10.1002/cctc.201600882">https://doi.org/10.1002/cctc.201600882</a>
  bibtex: '@article{Srour_Hadjiali_Sauer_Brunnengräber_Breitzke_Xu_Weidler_Limbach_Gutmann_Buntkowsky_2016,
    title={Synthesis and Solid-State NMR Characterization of a Robust, Pyridyl-Based
    Immobilized Wilkinson’s Type Catalyst with High Catalytic Performance}, volume={8},
    DOI={<a href="https://doi.org/10.1002/cctc.201600882">10.1002/cctc.201600882</a>},
    number={21}, journal={ChemCatChem}, author={Srour, Mohamad and Hadjiali, Sara
    and Sauer, Grit and Brunnengräber, Kai and Breitzke, Hergen and Xu, Yeping and
    Weidler, Heiko and Limbach, Hans-Heinrich and Gutmann, Torsten and Buntkowsky,
    Gerd}, year={2016}, pages={3409–3416} }'
  chicago: 'Srour, Mohamad, Sara Hadjiali, Grit Sauer, Kai Brunnengräber, Hergen Breitzke,
    Yeping Xu, Heiko Weidler, Hans-Heinrich Limbach, Torsten Gutmann, and Gerd Buntkowsky.
    “Synthesis and Solid-State NMR Characterization of a Robust, Pyridyl-Based Immobilized
    Wilkinson’s Type Catalyst with High Catalytic Performance.” <i>ChemCatChem</i>
    8, no. 21 (2016): 3409–3416. <a href="https://doi.org/10.1002/cctc.201600882">https://doi.org/10.1002/cctc.201600882</a>.'
  ieee: 'M. Srour <i>et al.</i>, “Synthesis and Solid-State NMR Characterization of
    a Robust, Pyridyl-Based Immobilized Wilkinson’s Type Catalyst with High Catalytic
    Performance,” <i>ChemCatChem</i>, vol. 8, no. 21, pp. 3409–3416, 2016, doi: <a
    href="https://doi.org/10.1002/cctc.201600882">10.1002/cctc.201600882</a>.'
  mla: Srour, Mohamad, et al. “Synthesis and Solid-State NMR Characterization of a
    Robust, Pyridyl-Based Immobilized Wilkinson’s Type Catalyst with High Catalytic
    Performance.” <i>ChemCatChem</i>, vol. 8, no. 21, 2016, pp. 3409–3416, doi:<a
    href="https://doi.org/10.1002/cctc.201600882">10.1002/cctc.201600882</a>.
  short: M. Srour, S. Hadjiali, G. Sauer, K. Brunnengräber, H. Breitzke, Y. Xu, H.
    Weidler, H.-H. Limbach, T. Gutmann, G. Buntkowsky, ChemCatChem 8 (2016) 3409–3416.
date_created: 2026-02-07T16:12:46Z
date_updated: 2026-02-17T16:13:06Z
doi: 10.1002/cctc.201600882
extern: '1'
intvolume: '         8'
issue: '21'
keyword:
- heterogeneous catalysis
- hydrogenation
- immobilization
- phosphane ligands
- rhodium
language:
- iso: eng
page: 3409–3416
publication: ChemCatChem
status: public
title: Synthesis and Solid-State NMR Characterization of a Robust, Pyridyl-Based Immobilized
  Wilkinson’s Type Catalyst with High Catalytic Performance
type: journal_article
user_id: '100715'
volume: 8
year: '2016'
...