---
_id: '63943'
abstract:
- lang: eng
text: A lithium halide exchange reaction at low-temperature, via the treatment of
2,6-di(isopropyl)phenyllithium on 1,1′-bis-(dichlorophosphino)ferrocene, resulted
in the first isolated example of an aryl-substituted diphospha [2]ferrocenophane
(diphospha [2]FCP) 2. Although compound 2 did not show any recognizable thermal
reaction at higher temperature (up to 350 °C), its tert-butyl-substituted counterpart
1 underwent a clean selective heat-mediated P–C cleavage reaction, followed
by an inter-molecular rearrangement, to produce a P–P fused bis [3]ferrocenophane
3 with all-trans oriented P-chain, which upon further heating gave a polyferrocenylphosphane
tBu-[Fc’P2]n-tBu (4). Since polymer 4 is insoluble in common organic solvents,
it has been characterized with solid-state techniques, including solid-state NMR.
Density functional theory (DFT) has further been employed to identify possible
pathways for P–C bond cleavage on 1 and 2, as well as to evaluate accessible
pathways for further polymerization toward 4.
author:
- first_name: Subhayan
full_name: Dey, Subhayan
last_name: Dey
- first_name: Denis
full_name: Kargin, Denis
last_name: Kargin
- first_name: Mark V.
full_name: Höfler, Mark V.
last_name: Höfler
- first_name: Balazs
full_name: Szathmari, Balazs
last_name: Szathmari
- first_name: Clemens
full_name: Bruhn, Clemens
last_name: Bruhn
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Zsolt
full_name: Kelemen, Zsolt
last_name: Kelemen
- first_name: Rudolf
full_name: Pietschnig, Rudolf
last_name: Pietschnig
citation:
ama: Dey S, Kargin D, Höfler MV, et al. Oligo- and polymerization of phospha [2]ferrocenophanes
to one dimensional phosphorus chains with ferrocenylene handles. Polymer.
2022;242:124589.
apa: Dey, S., Kargin, D., Höfler, M. V., Szathmari, B., Bruhn, C., Gutmann, T.,
Kelemen, Z., & Pietschnig, R. (2022). Oligo- and polymerization of phospha
[2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles.
Polymer, 242, 124589.
bibtex: '@article{Dey_Kargin_Höfler_Szathmari_Bruhn_Gutmann_Kelemen_Pietschnig_2022,
title={Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional
phosphorus chains with ferrocenylene handles}, volume={242}, journal={Polymer},
author={Dey, Subhayan and Kargin, Denis and Höfler, Mark V. and Szathmari, Balazs
and Bruhn, Clemens and Gutmann, Torsten and Kelemen, Zsolt and Pietschnig, Rudolf},
year={2022}, pages={124589} }'
chicago: 'Dey, Subhayan, Denis Kargin, Mark V. Höfler, Balazs Szathmari, Clemens
Bruhn, Torsten Gutmann, Zsolt Kelemen, and Rudolf Pietschnig. “Oligo- and Polymerization
of Phospha [2]Ferrocenophanes to One Dimensional Phosphorus Chains with Ferrocenylene
Handles.” Polymer 242 (2022): 124589.'
ieee: S. Dey et al., “Oligo- and polymerization of phospha [2]ferrocenophanes
to one dimensional phosphorus chains with ferrocenylene handles,” Polymer,
vol. 242, p. 124589, 2022.
mla: Dey, Subhayan, et al. “Oligo- and Polymerization of Phospha [2]Ferrocenophanes
to One Dimensional Phosphorus Chains with Ferrocenylene Handles.” Polymer,
vol. 242, 2022, p. 124589.
short: S. Dey, D. Kargin, M.V. Höfler, B. Szathmari, C. Bruhn, T. Gutmann, Z. Kelemen,
R. Pietschnig, Polymer 242 (2022) 124589.
date_created: 2026-02-07T09:10:38Z
date_updated: 2026-02-17T16:18:36Z
extern: '1'
intvolume: ' 242'
keyword:
- solid-state nmr
- Ansa-ferrocene
- DFT calculations
- Oligophosphine
- Polyphosphane
- Ring-opening polymerization
language:
- iso: eng
page: '124589'
publication: Polymer
status: public
title: Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional
phosphorus chains with ferrocenylene handles
type: journal_article
user_id: '100715'
volume: 242
year: '2022'
...
---
_id: '13185'
abstract:
- lang: eng
text: Abstract Polylactide is a biodegradable versatile material based on annually
renewable resources and thus CO2-neutral in its lifecycle. Until now, tin(II)octanoate
[Sn(Oct2)] was used as catalyst for the industrial ring-opening polymerization
of lactide in spite of its cytotoxicity. On the way towards a sustainable catalyst,
three iron(II) hybrid guanidine complexes were investigated concerning their molecular
structure and applied to the ring-opening polymerization of lactide. The complexes
could polymerize unpurified technical-grade rac-lactide as well as recrystallized
l-lactide to long-chain polylactide in bulk with monomer/initiator ratios of more
than 5000:1 in a controlled manner following the coordination–insertion mechanism.
For the first time, a biocompatible complex has surpassed Sn(Oct)2 in its polymerization
activity under industrially relevant conditions.
author:
- first_name: Ruth D.
full_name: Rittinghaus, Ruth D.
last_name: Rittinghaus
- first_name: Pascal M.
full_name: Schäfer, Pascal M.
last_name: Schäfer
- first_name: Pascal
full_name: Albrecht, Pascal
last_name: Albrecht
- first_name: Christian
full_name: Conrads, Christian
last_name: Conrads
- first_name: Alexander
full_name: Hoffmann, Alexander
last_name: Hoffmann
- first_name: Agnieszka N.
full_name: Ksiazkiewicz, Agnieszka N.
last_name: Ksiazkiewicz
- first_name: Olga
full_name: Bienemann, Olga
last_name: Bienemann
- first_name: Andrij
full_name: Pich, Andrij
last_name: Pich
- first_name: Sonja
full_name: Herres-Pawlis, Sonja
last_name: Herres-Pawlis
citation:
ama: 'Rittinghaus RD, Schäfer PM, Albrecht P, et al. New Kids in Lactide Polymerization:
Highly Active and Robust Iron Guanidine Complexes as Superior Catalysts. ChemSusChem.
2019;12(10):2161-2165. doi:10.1002/cssc.201900481'
apa: 'Rittinghaus, R. D., Schäfer, P. M., Albrecht, P., Conrads, C., Hoffmann, A.,
Ksiazkiewicz, A. N., … Herres-Pawlis, S. (2019). New Kids in Lactide Polymerization:
Highly Active and Robust Iron Guanidine Complexes as Superior Catalysts. ChemSusChem,
12(10), 2161–2165. https://doi.org/10.1002/cssc.201900481'
bibtex: '@article{Rittinghaus_Schäfer_Albrecht_Conrads_Hoffmann_Ksiazkiewicz_Bienemann_Pich_Herres-Pawlis_2019,
title={New Kids in Lactide Polymerization: Highly Active and Robust Iron Guanidine
Complexes as Superior Catalysts}, volume={12}, DOI={10.1002/cssc.201900481},
number={10}, journal={ChemSusChem}, author={Rittinghaus, Ruth D. and Schäfer,
Pascal M. and Albrecht, Pascal and Conrads, Christian and Hoffmann, Alexander
and Ksiazkiewicz, Agnieszka N. and Bienemann, Olga and Pich, Andrij and Herres-Pawlis,
Sonja}, year={2019}, pages={2161–2165} }'
chicago: 'Rittinghaus, Ruth D., Pascal M. Schäfer, Pascal Albrecht, Christian Conrads,
Alexander Hoffmann, Agnieszka N. Ksiazkiewicz, Olga Bienemann, Andrij Pich, and
Sonja Herres-Pawlis. “New Kids in Lactide Polymerization: Highly Active and Robust
Iron Guanidine Complexes as Superior Catalysts.” ChemSusChem 12, no. 10
(2019): 2161–65. https://doi.org/10.1002/cssc.201900481.'
ieee: 'R. D. Rittinghaus et al., “New Kids in Lactide Polymerization: Highly
Active and Robust Iron Guanidine Complexes as Superior Catalysts,” ChemSusChem,
vol. 12, no. 10, pp. 2161–2165, 2019.'
mla: 'Rittinghaus, Ruth D., et al. “New Kids in Lactide Polymerization: Highly Active
and Robust Iron Guanidine Complexes as Superior Catalysts.” ChemSusChem,
vol. 12, no. 10, 2019, pp. 2161–65, doi:10.1002/cssc.201900481.'
short: R.D. Rittinghaus, P.M. Schäfer, P. Albrecht, C. Conrads, A. Hoffmann, A.N.
Ksiazkiewicz, O. Bienemann, A. Pich, S. Herres-Pawlis, ChemSusChem 12 (2019) 2161–2165.
date_created: 2019-09-11T10:58:09Z
date_updated: 2022-01-06T06:51:30Z
doi: 10.1002/cssc.201900481
intvolume: ' 12'
issue: '10'
keyword:
- bioplastics
- guanidines
- iron
- lactide
- ring-opening polymerization
language:
- iso: eng
page: 2161-2165
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: ChemSusChem
status: public
title: 'New Kids in Lactide Polymerization: Highly Active and Robust Iron Guanidine
Complexes as Superior Catalysts'
type: journal_article
user_id: '40778'
volume: 12
year: '2019'
...