[{"_id":"63943","user_id":"100715","keyword":["solid-state nmr","Ansa-ferrocene","DFT calculations","Oligophosphine","Polyphosphane","Ring-opening polymerization"],"extern":"1","language":[{"iso":"eng"}],"type":"journal_article","publication":"Polymer","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."}],"status":"public","date_updated":"2026-02-17T16:18:36Z","date_created":"2026-02-07T09:10:38Z","author":[{"first_name":"Subhayan","last_name":"Dey","full_name":"Dey, Subhayan"},{"full_name":"Kargin, Denis","last_name":"Kargin","first_name":"Denis"},{"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","last_name":"Gutmann","id":"118165","full_name":"Gutmann, Torsten"},{"full_name":"Kelemen, Zsolt","last_name":"Kelemen","first_name":"Zsolt"},{"full_name":"Pietschnig, Rudolf","last_name":"Pietschnig","first_name":"Rudolf"}],"volume":242,"title":"Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles","year":"2022","citation":{"apa":"Dey, S., Kargin, D., Höfler, M. V., Szathmari, B., Bruhn, C., Gutmann, T., Kelemen, Z., &#38; Pietschnig, R. (2022). Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles. <i>Polymer</i>, <i>242</i>, 124589.","short":"S. Dey, D. Kargin, M.V. Höfler, B. Szathmari, C. Bruhn, T. Gutmann, Z. Kelemen, R. Pietschnig, Polymer 242 (2022) 124589.","mla":"Dey, Subhayan, et al. “Oligo- and Polymerization of Phospha [2]Ferrocenophanes to One Dimensional Phosphorus Chains with Ferrocenylene Handles.” <i>Polymer</i>, vol. 242, 2022, p. 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} }","ama":"Dey S, Kargin D, Höfler MV, et al. Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles. <i>Polymer</i>. 2022;242:124589.","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.” <i>Polymer</i> 242 (2022): 124589.","ieee":"S. Dey <i>et al.</i>, “Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles,” <i>Polymer</i>, vol. 242, p. 124589, 2022."},"page":"124589","intvolume":"       242"},{"author":[{"first_name":"Mohammad Urf","last_name":"Maaz","full_name":"Maaz, Mohammad Urf","id":"49274"},{"last_name":"Sprenger","full_name":"Sprenger, Alexander","id":"22707","first_name":"Alexander"},{"orcid":"0000-0002-3717-3939","last_name":"Hellebrand","id":"209","full_name":"Hellebrand, Sybille","first_name":"Sybille"}],"date_created":"2019-08-14T06:59:04Z","publisher":"IEEE","date_updated":"2022-05-11T17:09:35Z","conference":{"end_date":"2019-11-14","location":"Washington, DC, USA","name":"50th IEEE International Test Conference (ITC)","start_date":"2019-11-12"},"title":"A Hybrid Space Compactor for Adaptive X-Handling","publication_status":"published","quality_controlled":"1","citation":{"short":"M.U. Maaz, A. Sprenger, S. Hellebrand, in: 50th IEEE International Test Conference (ITC), IEEE, Washington, DC, USA, 2019, pp. 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} }","mla":"Maaz, Mohammad Urf, et al. “A Hybrid Space Compactor for Adaptive X-Handling.” <i>50th IEEE International Test Conference (ITC)</i>, IEEE, 2019, pp. 1–8.","apa":"Maaz, M. U., Sprenger, A., &#38; Hellebrand, S. (2019). A Hybrid Space Compactor for Adaptive X-Handling. <i>50th IEEE International Test Conference (ITC)</i>, 1–8.","ama":"Maaz MU, Sprenger A, Hellebrand S. A Hybrid Space Compactor for Adaptive X-Handling. In: <i>50th IEEE International Test Conference (ITC)</i>. IEEE; 2019:1-8.","chicago":"Maaz, Mohammad Urf, Alexander Sprenger, and Sybille Hellebrand. “A Hybrid Space Compactor for Adaptive X-Handling.” In <i>50th IEEE International Test Conference (ITC)</i>, 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 <i>50th IEEE International Test Conference (ITC)</i>, Washington, DC, USA, 2019, pp. 1–8."},"page":"1-8","place":"Washington, DC, USA","year":"2019","user_id":"209","department":[{"_id":"48"}],"_id":"12918","language":[{"iso":"eng"}],"keyword":["Faster-than-at-speed test","BIST","DFT","Test response compaction","Stochastic compactor","X-handling"],"type":"conference","publication":"50th IEEE International Test Conference (ITC)","status":"public","abstract":[{"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. ","lang":"eng"}]},{"type":"journal_article","publication":"Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry & Chemical Physics","abstract":[{"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.","lang":"eng"}],"status":"public","_id":"63956","user_id":"100715","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"],"extern":"1","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0942-9352"]},"issue":"3","year":"2017","citation":{"mla":"Gutmann, Torsten, et al. “P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests of Novel Heterogenized Iridium-Catalysts.” <i>Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; Chemical Physics</i>, vol. 231, no. 3, 2017, pp. 653–669, doi:<a href=\"https://doi.org/10.1515/zpch-2016-0837\">10.1515/zpch-2016-0837</a>.","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={<a href=\"https://doi.org/10.1515/zpch-2016-0837\">10.1515/zpch-2016-0837</a>}, number={3}, journal={Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; 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} }","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 &#38; Chemical Physics 231 (2017) 653–669.","apa":"Gutmann, T., Alkhagani, S., Rothermel, N., Limbach, H. H., Breitzke, H., &#38; Buntkowsky, G. (2017). P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests of Novel heterogenized Iridium-Catalysts. <i>Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; Chemical Physics</i>, <i>231</i>(3), 653–669. <a href=\"https://doi.org/10.1515/zpch-2016-0837\">https://doi.org/10.1515/zpch-2016-0837</a>","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. <i>Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; Chemical Physics</i>. 2017;231(3):653–669. doi:<a href=\"https://doi.org/10.1515/zpch-2016-0837\">10.1515/zpch-2016-0837</a>","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,” <i>Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; Chemical Physics</i>, vol. 231, no. 3, pp. 653–669, 2017, doi: <a href=\"https://doi.org/10.1515/zpch-2016-0837\">10.1515/zpch-2016-0837</a>.","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.” <i>Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry &#38; Chemical Physics</i> 231, no. 3 (2017): 653–669. <a href=\"https://doi.org/10.1515/zpch-2016-0837\">https://doi.org/10.1515/zpch-2016-0837</a>."},"page":"653–669","intvolume":"       231","date_updated":"2026-02-17T16:18:04Z","author":[{"first_name":"Torsten","last_name":"Gutmann","id":"118165","full_name":"Gutmann, Torsten"},{"first_name":"S.","last_name":"Alkhagani","full_name":"Alkhagani, S."},{"last_name":"Rothermel","full_name":"Rothermel, N.","first_name":"N."},{"last_name":"Limbach","full_name":"Limbach, H. H.","first_name":"H. H."},{"full_name":"Breitzke, H.","last_name":"Breitzke","first_name":"H."},{"first_name":"G.","last_name":"Buntkowsky","full_name":"Buntkowsky, G."}],"date_created":"2026-02-07T15:35:41Z","volume":231,"title":"P-31-Solid-State NMR Characterization and Catalytic Hydrogenation Tests of Novel heterogenized Iridium-Catalysts","doi":"10.1515/zpch-2016-0837"}]