Results 71 to 80 of about 5,464 (221)

Synthesis of Early Transition Metal Bisphenolate Complexes and Their Use as Olefin Polymerization Catalysts [PDF]

, 2009
Bisphenolate ligands with pyridine- and benzene-diyl linkers have been synthesized and metalated with group 4 and 5 transition metals. The solid-state structures of some of the group 4 complexes have been solved.
Bercaw, John E., Golisz, Suzanne R.
core   +1 more source

Designing organometallic compounds for catalysis and therapy [PDF]

, 2012
Bioorganometallic chemistry is a rapidly developing area of research. In recent years organometallic compounds have provided a rich platform for the design of effective catalysts, e.g. for olefin metathesis and transfer hydrogenation.
Abraha Habtemariam, Aird, Alama, Alama, Alberto, Allardyce, Allen, Allen, Ana M. Pizarro, Anand, Ang, Ang, Anna Louisa Noffke, Arancibia, Barragan, Barry, Barry, Barry, Barry, Bergamo, Bergamo, Betanzos-Lara, Betanzos-Lara, Betanzos-Lara, Brewster, Bugarcic, Bugarcic, Canivet, Carrión, Caruso, Casini, Casini, Casini, Chaplin, Chen, Chen, del Pozo, Desmard, Dorcier, Dorcier, Dougan, Dougan, Dyson, Erxleben, Feng, Fernandez, Filak, Fu, Fu, Fujii, Giannini, Gormen, Gossens, Grau, Grguric-Sipka, Grubbs, Gröger, Guichard, Guo, Guo, Habtemariam, Hambley, Hamels, Hanif, Hanif, Harris, Hartinger, Hashiguchi, Hayes, Hayward, Herman, Hindi, Hogan, Hollmann, Hu, Hull, Ito, Jafarpour, Jennerwein, Jira, Jungwirth, Kandioller, Kisova, Kljun, Kopf, Kopf-Maier, Kopf-Maier, Kopf-Maier, Kopf-Maier, Kröger, Kuninobu, Lee, Leiva, Li, Liu, Liu, Liu, Liu, Liu, Lo, Lo, Lummen, Lutz, Maenaka, Meggers, Meggers, Meggers, Melchart, Melchart, Melchart, Melendez, Mendes, Motterlini, Mross, Novakova, Novakova, Novakova, Noyori, Noyori, Oehninger, Ogo, Ogo, Olliaro, Page, Patiño, Peacock, Peacock, Peacock, Peacock, Pelletier, Peter J. Sadler, Petzold, Petzold, Pitto-Barry, Pitto-Barry, Pizarro, Plazuk, Rocamora-Reverte, Ruiz, Ruppert, Sandoval, Sanford, Sarsam, Schatzschneider, Schmid, Schäfer, Scolaro, Selander, Skinner, Sriskandakumar, Steckhan, Strohfeldt, Suss-Fink, Sweeney, Takebayashi, Tan, Therrien, Therrien, Toney, Top, Top, Top, Trnka, Turel, van der Donk, van Rijt, van Rijt, van Rijt, Vessières, Vougioukalakis, Vougioukalakis, Wang, Wang, Wang, Ward, Williams, Williams, Wong, Wu, Wu, Yabluchanskiy, Yamakawa, Yan, Yano, Yuasa, Zava, Zekri, Zhao, Zoeller   +188 more
core   +1 more source

Metallocene Catalysts for 1‐Butene Polymerization [PDF]

Macromolecular Chemistry and Physics, 2006
AbstractSummary: Isotactic polybutenes of variable isotacticity and melting points of form I in the range 100–125 °C have been prepared with both C2‐ and C1‐symmetric zirconocenes. The C1‐symmetric zirconocenes bearing the bilateral symmetric 2,5‐dimethyl‐7H‐cyclopenta[1,2‐b:4,3‐b′]dithiophene ligand connected by a dimethylsilandiyl bridge to a ...
Luigi Resconi, Isabella Camurati, Federica Malizia   +2 more
openaire   +1 more source

Advanced Macromolecular Architectures via Inorganic Polymers

Macromolecular Rapid Communications, Volume 47, Issue 2, 23 January 2026.
From linear chains to advanced macromolecular architectures, this review explores how innovations in inorganic polymers unlock new structural and functional capabilities. Emphasizing modern synthetic strategies and unique architectural designs, it highlights the emerging potential of main‐group element systems as next‐generation alternatives to ...
Edip Ajvazi, Pauline Stadler, Paul Strasser, Ian Teasdale   +3 more
wiley   +1 more source

CVD‐Engineered Ni and FeNi Catalysts on Hexagonal Boron Nitride for Efficient CO2‐Methane Co‐Conversion to Syngas: High‐Performance Alternatives to Traditional Alumina‐Supported Catalysts

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This study presents a sustainable approach for mitigating greenhouse gas emissions by converting methane (CH4) and carbon dioxide (CO2) into syngas using nickel‐based catalysts supported on hexagonal boron nitride (hBN), synthesized through chemical vapor deposition (CVD).
Benyamin M. Garmejani, Samira Mehravar, Shohreh Fatemi, Juan M. Coronado   +3 more
wiley   +1 more source

Research progress and applications of novel perfluoroaryl borate in polymerization

e-Polymers
Metallocene catalysts, renowned for their exceptional activity, have drawn widespread attention in academia and industry for polymerization. Additionally, cocatalysts are pivotal in metallocene systems, significantly influencing both catalytic activity ...
Wei Yiming, Qu Shuzhang, Li Xinwei, Chen Jian, Zheng Cui, Li Qian, Lan Yue   +6 more
doaj   +1 more source

Catalytic N_2-to-NH_3 Conversion by Fe at Lower Driving Force: A Proposed Role for Metallocene-Mediated PCET [PDF]

, 2017
We have recently reported on several Fe catalysts for N_2-to-NH_3 conversion that operate at low temperature (−78 °C) and atmospheric pressure while relying on a very strong reductant (KC_8) and acid ([H(OEt_2)_2][BArF_4]). Here we show that our original
Chalkley, Matthew J., Del Castillo, Trevor J., Matson, Benjamin D., Peters, Jonas C., Roddy, Joseph P.   +4 more
core   +1 more source

Correlation Between Vinyl Content of Recycled HDPE and Polymer Degradation: An NMR Approach

Journal of Applied Polymer Science, Volume 142, Issue 47, December 15, 2025.
The degradation behavior of high‐density polyethylene (HDPE) during recycling depends on its vinyl group content. This study shows that 1H NMR spectroscopy enables accurate assessment of vinyl groups unlike FTIR. Changes in melt flow and molecular weight with multiple processing are linked to vinyl content which could enable tailor‐made re‐additivation
Kim Hao Ng, Frank Malz, Elke Metzsch‐Zilligen, Rudolf Pfaendner   +3 more
wiley   +1 more source

Allylsilylcyclopentadienyl Group 4 metal complexes: synthesis, structure and reactivity [PDF]

, 2003
(Allyldimethyl)silyl-substituted cyclopentadiene C5H5SiMe2(CH2CH /CH2) (1) and indene C9H7 /1-SiMe2(CH2CH /CH2) (2)\ud were synthesized by reaction of SiMe2(CH2CH /CH2)Cl with NaC5H5 or LiC9H7, respectively. Metallation of 1 with n-BuLi and\ud TlOEt gave
Cano Sierra, Jesús, Gómez Sal, Ma Pilar, Heinz, Georg, Martínez Martínez, Gema, Royo Gracia, Pascual   +4 more
core   +3 more sources

Atomic‐scale structure elucidation of refractory metal carbides derived from metallocene‐based preceramics

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Abstract Polymer‐derived ceramics (PDCs) are becoming an alluring class of materials that can incorporate the ceramic chemistries found in ultra‐high‐temperature ceramics, such as Ti, Zr, and Hf carbides. The use of polymeric materials intrinsically enables processing techniques with a higher degree of complexity in a more straightforward fashion, such
Stephanie L. Chua, Haira G. Hackbarth, James F. Ponder Jr., Nicholas D. Posey, Yuwei Yang, Pierre‐Olivier Autran, Matthew B. Dickerson, Timothy L. Pruyn, Nicholas M. Bedford   +8 more
wiley   +1 more source