---
_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: '12918'
abstract:
- lang: eng
text: 'The test for small delay faults is of major importance for predicting potential
early life failures or wearout problems. Typically, a faster-than-at-speed test
(FAST) with sev¬eral different frequencies is used to detect also hidden small
delays, which can only be propagated over short paths. But then the outputs at
the end of long paths may no longer reach their stable values at the nominal observation
time and must be considered as unknown (X-values). Thus, test response compaction
for FAST must be extremely flexible to cope with high X-rates, which also vary
with the test frequencies. Stochastic compaction introduced by Mitra et al. is
controlled by weighted pseudo-random signals allowing for easy adaptation to varying
conditions. As demonstrated in previous work, the pseudo-random control can be
optimized for high fault efficiency or X-reduction, but a given target in fault
efficiency cannot be guaranteed. To close this gap, a hybrid space compactor is
introduced in this paper. It is based on the observation that many faults are
lost in the compaction of relatively few critical test patterns. For these critical
patterns a deterministic compaction phase is added to the test, where the existing
compactor structure is re-used, but controlled by specifically determined control
vectors. '
author:
- first_name: Mohammad Urf
full_name: Maaz, Mohammad Urf
id: '49274'
last_name: Maaz
- first_name: Alexander
full_name: Sprenger, Alexander
id: '22707'
last_name: Sprenger
- first_name: Sybille
full_name: Hellebrand, Sybille
id: '209'
last_name: Hellebrand
orcid: 0000-0002-3717-3939
citation:
ama: 'Maaz MU, Sprenger A, Hellebrand S. A Hybrid Space Compactor for Adaptive X-Handling.
In: 50th IEEE International Test Conference (ITC). IEEE; 2019:1-8.'
apa: Maaz, M. U., Sprenger, A., & Hellebrand, S. (2019). A Hybrid Space Compactor
for Adaptive X-Handling. 50th IEEE International Test Conference (ITC),
1–8.
bibtex: '@inproceedings{Maaz_Sprenger_Hellebrand_2019, place={Washington, DC, USA},
title={A Hybrid Space Compactor for Adaptive X-Handling}, booktitle={50th IEEE
International Test Conference (ITC)}, publisher={IEEE}, author={Maaz, Mohammad
Urf and Sprenger, Alexander and Hellebrand, Sybille}, year={2019}, pages={1–8}
}'
chicago: 'Maaz, Mohammad Urf, Alexander Sprenger, and Sybille Hellebrand. “A Hybrid
Space Compactor for Adaptive X-Handling.” In 50th IEEE International Test Conference
(ITC), 1–8. Washington, DC, USA: IEEE, 2019.'
ieee: M. U. Maaz, A. Sprenger, and S. Hellebrand, “A Hybrid Space Compactor for
Adaptive X-Handling,” in 50th IEEE International Test Conference (ITC),
Washington, DC, USA, 2019, pp. 1–8.
mla: Maaz, Mohammad Urf, et al. “A Hybrid Space Compactor for Adaptive X-Handling.”
50th IEEE International Test Conference (ITC), IEEE, 2019, pp. 1–8.
short: 'M.U. Maaz, A. Sprenger, S. Hellebrand, in: 50th IEEE International Test
Conference (ITC), IEEE, Washington, DC, USA, 2019, pp. 1–8.'
conference:
end_date: 2019-11-14
location: Washington, DC, USA
name: 50th IEEE International Test Conference (ITC)
start_date: 2019-11-12
date_created: 2019-08-14T06:59:04Z
date_updated: 2022-05-11T17:09:35Z
department:
- _id: '48'
keyword:
- Faster-than-at-speed test
- BIST
- DFT
- Test response compaction
- Stochastic compactor
- X-handling
language:
- iso: eng
page: 1-8
place: Washington, DC, USA
publication: 50th IEEE International Test Conference (ITC)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: A Hybrid Space Compactor for Adaptive X-Handling
type: conference
user_id: '209'
year: '2019'
...
---
_id: '63956'
abstract:
- lang: eng
text: The synthesis of novel robust and stable iridium-based immobilized catalysts
on silica-polymer hybrid materials (Si-PB-Ir) is described. These catalysts are
characterized by a combination of 1D P-31 CP-MAS and 2D P-31-H-1 HETCOR and J-resolved
multinuclear solid state NMR experiments. Different binding situations such as
singly and multiply coordinated phosphines are identified. Density functional
theory (DFT) calculations are performed to corroborate the interpretation of the
experimental NMR data, in order to propose a structural model of the heterogenized
catalysts. Finally, the catalytic activity of the Si-PB-Ir catalysts is investigated
for the hydrogenation of styrene employing para-enriched hydrogen gas.
author:
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: S.
full_name: Alkhagani, S.
last_name: Alkhagani
- first_name: N.
full_name: Rothermel, N.
last_name: Rothermel
- first_name: H. H.
full_name: Limbach, H. H.
last_name: Limbach
- first_name: H.
full_name: Breitzke, H.
last_name: Breitzke
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
citation:
ama: Gutmann T, Alkhagani S, Rothermel N, Limbach HH, Breitzke H, Buntkowsky G.
P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests of Novel
heterogenized Iridium-Catalysts. Zeitschrift Fur Physikalische Chemie-International
Journal of Research in Physical Chemistry & Chemical Physics. 2017;231(3):653–669.
doi:10.1515/zpch-2016-0837
apa: Gutmann, T., Alkhagani, S., Rothermel, N., Limbach, H. H., Breitzke, H., &
Buntkowsky, G. (2017). P-31-Solid-State NMR Characterization and Catalytic Hydrogenation
Tests of Novel heterogenized Iridium-Catalysts. Zeitschrift Fur Physikalische
Chemie-International Journal of Research in Physical Chemistry & Chemical
Physics, 231(3), 653–669. https://doi.org/10.1515/zpch-2016-0837
bibtex: '@article{Gutmann_Alkhagani_Rothermel_Limbach_Breitzke_Buntkowsky_2017,
title={P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests
of Novel heterogenized Iridium-Catalysts}, volume={231}, DOI={10.1515/zpch-2016-0837},
number={3}, journal={Zeitschrift Fur Physikalische Chemie-International Journal
of Research in Physical Chemistry & Chemical Physics}, author={Gutmann, Torsten
and Alkhagani, S. and Rothermel, N. and Limbach, H. H. and Breitzke, H. and Buntkowsky,
G.}, year={2017}, pages={653–669} }'
chicago: 'Gutmann, Torsten, S. Alkhagani, N. Rothermel, H. H. Limbach, H. Breitzke,
and G. Buntkowsky. “P-31-Solid-State NMR Characterization and Catalytic Hydrogenation
Tests of Novel Heterogenized Iridium-Catalysts.” Zeitschrift Fur Physikalische
Chemie-International Journal of Research in Physical Chemistry & Chemical
Physics 231, no. 3 (2017): 653–669. https://doi.org/10.1515/zpch-2016-0837.'
ieee: 'T. Gutmann, S. Alkhagani, N. Rothermel, H. H. Limbach, H. Breitzke, and G.
Buntkowsky, “P-31-Solid-State NMR Characterization and Catalytic Hydrogenation
Tests of Novel heterogenized Iridium-Catalysts,” Zeitschrift Fur Physikalische
Chemie-International Journal of Research in Physical Chemistry & Chemical
Physics, vol. 231, no. 3, pp. 653–669, 2017, doi: 10.1515/zpch-2016-0837.'
mla: Gutmann, Torsten, et al. “P-31-Solid-State NMR Characterization and Catalytic
Hydrogenation Tests of Novel Heterogenized Iridium-Catalysts.” Zeitschrift
Fur Physikalische Chemie-International Journal of Research in Physical Chemistry
& Chemical Physics, vol. 231, no. 3, 2017, pp. 653–669, doi:10.1515/zpch-2016-0837.
short: T. Gutmann, S. Alkhagani, N. Rothermel, H.H. Limbach, H. Breitzke, G. Buntkowsky,
Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical
Chemistry & Chemical Physics 231 (2017) 653–669.
date_created: 2026-02-07T15:35:41Z
date_updated: 2026-02-17T16:18:04Z
doi: 10.1515/zpch-2016-0837
extern: '1'
intvolume: ' 231'
issue: '3'
keyword:
- Chemistry
- dynamic nuclear-polarization
- solid-state nmr
- DFT
- heterogeneous catalysis
- hydrido complexes
- hydrogenation
- immobilized catalyst
- inorganic hybrid
- iridium
- materials
- mesoporous
- molecular-orbital methods
- PHIP
- phosphine complexes
- reusable catalysts
- silica
- solid-state-NMR
- wilkinsons catalyst
language:
- iso: eng
page: 653–669
publication: Zeitschrift Fur Physikalische Chemie-International Journal of Research
in Physical Chemistry & Chemical Physics
publication_identifier:
issn:
- 0942-9352
status: public
title: P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests of
Novel heterogenized Iridium-Catalysts
type: journal_article
user_id: '100715'
volume: 231
year: '2017'
...