Serving with Patience and Perseverance

Jerzy Klosin

Fellow Core R&D

Early Fascination Becomes Life-Long Passion

Jerzy has a mean serve on the squash court, but he’s all about patience and perseverance in the lab.

Growing up in Poland, Jerzy was introduced to the sciences at a very early age. By the time he reached middle school, he was hooked. “In Poland we started studying the sciences very early,” he said. “I was fascinated by experiments, and that just solidified the idea in my mind that I wanted to be a scientist and go into chemistry.”

Jerzy never lost his fascination with experimental science. In fact, it became his passion. “Chemistry is one of the branches of science where you do experiments and measure things to reach a conclusion. Those of us who enjoy the process are fortunate,” Jerzy said. “Experimental science isn’t easy. It’s hard to get secrets out of nature. Achieving something significant in science requires dedication and a lot of quality time in the lab. You need patience and perseverance, but if you’re fascinated by the process, you can sustain yourself and be successful.”

Much of Jerzy’s career has focused on catalysis, with a goal of designing plastics with ever-increasing levels of performance. “Even though we have been very successful at Dow with our polyolefins, we are still in the process of designing new plastics that are stronger and more flexible, even while using less product,” he said. “It’s very rewarding to know that we can design plastics that have less environmental impact and use less energy to make.”   

Inspiring Young Scientists, Encouraging Collaboration

Today, Jerzy works with many young scientists and encourages them to spend time in the lab – and share their results. “I work with young scientists every day, and I tell them they must be devoted and disciplined to be successful,” he said. “You must understand the subject matter, spend quality time doing good experiments in the lab, and collaborate with others.

“We’ve moved beyond the 19th century mode of doing science alone. Collaborating with people from all different mindsets is very important, even though it’s not always easy. I want young scientists to know that if they enjoy experimental science and share their results with others, they can have a very rewarding career.”


Gordon E. Moore Medal

Dow Excellence in Science Award



Editorial advisory board of Organometallics,

Board-Council Committee on ACS publications

US 8,609,794: Process for selectively polymerizing ethylene and catalyst therefor.

US 8,372,927: Figueroa, R.; Klosin, J. Metal-ligand complexes and catalysts.

US 8,383,753: Polydentate heteroatom ligand containing metal complexes, catalysts and methods of making and using the same.

US 8,318,874: Process of selectively polymerizing ethylene and catalyst therefore.

US 8,202,954: Metal-ligand complexes and catalysts.

US 8,071,701: Polydentate heteroatom ligand containing metal complexes, catalysts and methods of making and using the same.

US 7220884: Hydroaminomethylation of Olefins.

US 7189883: Diazaphospholane ligands for asymmetric catalysis.

US 7015360: Asymmetric catalysts prepared from optically active bisphosphites bridged by achiral diols.

US 6946531: Low molecular weight ethylene interpolymers and polymerization process.

US 6825295: Alkaryl-substituted group 4 metal complexes, catalysts and olefin polymerization process.

US 6825147: 3-aryl-substituted cyclopentadienyl metal complexes and polymerization process.

US 6806327: Substituted polycyclic, fused ring compounds, metal complexes and polymerization process.

US 6800701: Polycyclic, fused ring compounds, metal complexes and polymerization process.

US 6646071: Metal complexes containing bridging heteroatom for olefin-polymerization-process.

US 6617407: Bis(n,n-dihydrocarbylamino)-substituted cyclopentadienes and metal complexes thereof.

US 6613921: Polycyclic, fused ring compounds, metal complexes and polymerization process.

US 6555634: Di- and tri-heteroatom substituted indenyl metal complexes.

US 6515155: Substituted group 4 metal complexes, catalysts and olefin polymerization process.

US 6344529: Zwitterionic catalyst activator.

US 6268444: 3-heteroatom substituted cyclopentadienyl-containing metal complexes and olefin polymerization process.

US 6248914: Metalloid salt catalyst/activators.

US 6235917: Dinuclear complexes and polymerization catalysts therefrom.

US 6160146: Process for preparing trifluoroarylaluminum etherate.

US 5670680: Method for producing octahydrofluorenyl metal complexes.

He, Y.; X.; Klosin, J.; Cong, R.; Roof, R.G.; Redwind, D. Terminal and Internal Unsaturations in Poly(ethylene-co-1-octene). Macromolecules, 2014 ASAP

Klet, R. C. Theriault, C. N. Klosin, J. Labinger, J. A.; Bercaw J. E. Investigations into Asymmetric Post-Metallocene Group 4 Complexes for the Synthesis of Highly Regioirregular Polypropylene. Macromolecules2014,47, 3317-3324.

Klosin, J.; Fontaine, P. P.; Figueroa R.; McCann, S. D.; Mort, D. Preparation of New Olefin Polymerization Precatalysts by Facile Derivatization of Imino-Enamido ZrMe3 and HfMe3 Complexes. Organometallics 2013, 32,

Luconi, L.; Klosin, J.; Smith, A. J.; Germain, S.; Schulz, E.; Hannedouche, J.; Giambastiani, G. Cationic Group-IV pincer-type complexes for polymerization and hydroamination catalysis. Dalton Trans 2013. 42,

Fontaine, P. P.; Figueroa R.; McCann, S. D.; Mort, D.; Klosin, J. Synthesis and Scale-up of Imino-Enamido Hafnium and Zirconium Olefin Polymerization Catalysts. Organometallics 2013, 32, 2963-2972.

Fontaine, P. P.; Klosin, J.; McDougal, N. T. Hafnium Amidoquinoline Complexes: Highly Active Olefin Polymerization Catalysts with Ultrahigh Molecular Weight Capacity. Organometallics, 2012, 31, 6244

Gladysz, J. A.; Ball, Z. T.; Bertrand, G.; Blum, S. A.; Dong, V. M.; Dorta, R.; Hahn, F. E.; Humphrey, M. G.; Jones, W. D.; Klosin, J.; Manners, I.; Marks, T. J.; Mayer, J. M.; Rieger, B.; Ritter, J.; Sattelberger, A. P.; Schomaker, J. M.; Yam, V. W. W. Organometallics Roundtable 2011, Organometallics 2012, 31, 1-18.

Luconi, L.; Rossin, A.; Tuci, G.; Tritto, I.; Boggioni, L.; Klosin, J. J.; Theriault, C. N.; Giambastiani, G. Facing Unexpected Reactivity Paths with ZrIV–Pyridylamido Polymerization Catalysts. Chemistry – A European Journal 2012, 18, 671-687.

Szuromi, E.; Klosin, J.; Abboud, K. A. Aminotroponiminato Hafnium and Zirconium Complexes: Synthesis and Ethylene/1-Octene Copolymerization Study, Organometallics 2011, 30, 4589-4597.

Frazier, K. A.; Froese, R. D.; He, Y.; Klosin, J.; Theriault, C. N.; Vosejpka, P. C.; Zhou, Z.; Abboud, K. A. Pyridylamido Hafnium and Zirconium Complexes: Synthesis, Dynamic Behavior, and Ethylene/1-Octene and Propylene Polymerization Reactions. Organometallics 2011, 30, 3318-3329.

Froese, R. D. J.; Jazdzewski, B. A.; Klosin, J.; Kuhlman, R. L.; Theriault, C. N.; Welsh, D. M.; Abboud, K. A. Imino-Amido Hf and Zr Complexes: Synthesis, Isomerization, and Olefin Polymerization. Organometallics 2011, 30, 251-262.

Figueroa, R.; Froese, R. D.; He, Y.; Klosin, J.; Theriault, C. N.; Abboud, K. A. Synthesis of Imino-Enamido Hafnium and Zirconium Complexes: A New Family of Olefin Polymerization Catalysts with Ultrahigh-Molecular-Weight Capabilities. Organometallics 2011, 30, 1695-1709.

Kuhlman, R. L.; Klosin, J. Tuning Block Compositions of Polyethylene Multi-Block Copolymers by Catalyst Selection. Macromolecules 2010, 43, 7903-7904.

Zhou, Z.; Kümmerle, R.; Stevens, J. C.; Redwine, D.; He, Y.; Qiu, X. Cong, R.; Klosin, J.; Montañez, N.; Roof, G. 13C NMR of polyolefins with a new high temperature 10 mm cryoprobe. J. Mag. Res. 2009, 200, 328-333.

Klosin, J. Kruper, W. J.; Patton, J. T.; Abboud, K. A. Synthesis and X-ray structure of novel 2- and 3-heteroatom-substituted ansa-zirconocene complexes. J. Organomet. Chem. 2009, 694, 2581-2596.

Axtell, A. T.; Klosin, J.; Whiteker, G. T.; Cobley, C. J.; Fox, M. E.; Jackson, M.; Abboud, K. A. Bridging Group Effects in Chelating Bis(2,5-diphenylphospholane) Ligands for Rhodium-Catalyzed Asymmetric Hydroformylation. Organometallics 2009, 28, 2993-2999.

Zhou, Z.; Stevens, J. C.; Klosin, J.; Kummerle, R.; Qiu, X.; Redwine, D.; Cong, R.; Taha, A.; Mason, J.; Winniford, B.; Chauvel, P.; Montanez, N. NMR Study of Isolated 2,1-Inverse Insertion in Isotactic Polypropylene. Macromolecules 2009, 42, 2291-2294.

Fox, M. E.; Jackson, M.; Lennon, I. C.; Klosin, J. Abboud, K. A. Bis-(2,5-diphenylphospholanes) with sp2 Carbon Linkers: Synthesis and Application in Asymmetric Hydrogenation, J. Org. Chem., 2008, 73, 775-784.

Klosin, J.; Landis, C. R. Ligands for Practical Rhodium-Catalyzed Asymmetric Hydroformylation. Acc. Chem. Res. 2007, 40, 1251-1259.

De Waele, P. Jazdzewski, B. A.; Klosin, J.; Murray, R. E.; Petersen, J. L.; Theriault, C. N.; Vosejpka, P. C. Synthesis, Reactivity and Olefin Polymerization Behavior of Imino-Amido Hafnium and Zirconium Complexes. Organometallics, 2007, 26, 3896-3899.

Thomas, P. J.; Axtell, A. T.; Klosin, J.; Peng, W.; Clark. T.; Landis, C. R.; Abboud. K. A. Asymmetric Hydroformylation of Vinyl Acetate: Application in the Synthesis of Optically Active Isoxazolines and Imidazoles. Org. Lett. 2007, 9, 2665-2668.

Arriola, D. J.; Bakota, M. Campbell, R. E.; Klosin, J.; LaPointe, R. E.;
Redwine, O. D.;Shankar,R. B.; Timmers, F. J. Penultimate Effect in Ethylene Styrene Copolymerization and the Discovery of Highly Active Ethylene Styrene Catalysts with Increased Styrene Reactivity, J. Am. Chem. Soc. 2007, 129, 7065-7076.

Cobley, C. J.; Froese, R. J. Klosin, J.; Qin, C. Whiteker, G. T.; Abboud, K. A. The Effect of Dihedral Angle of Biaryl-Bridged Bisphosphite Ligands on Enantioselectivity and Regioselectivity of Asymmetric Hydroformylation, Organometallics, 2007, 26, 2986-2999.

Axtell, A. T.; Klosin, J; Abboud, K. A. Evaluation of Asymmetric Hydrogenation Ligands in Asymmetric Hydroformylation Reactions. Highly Enantioselective Ligands Based on Bis-phosphacycles. Organometallics 2006, 25, 5003-5009.

Axtell, A. T.; Cobley, C. J.; Klosin, J.; Whiteker, G. T.; Zanotti-Gerosa, A.; Abboud K. A. Highly Regioselective and Enantioselective Asymmetric Hydroformylation of Olefins Mediated by 2,5-Disubstituted Phospholane Ligands. Angew. Chem. Int. Ed. 2005, 44, 5834-5838.

Landis. C. R.; Rand, C. L.; Klosin. J. Optically active 3,4-diazaphospholane ligands and their application in asymmetric hydroformylation and allylic alkylation reactions (perspective). Chimica Oggi, 2005, Suppl. 12-16.

Briggs, J.; Klosin, J.; Whiteker, G. Synthesis of Biologically Active Amines via Rhodium-Bisphosphite-Catalyzed Hydroaminomethylation. Org. Lett. 2005, 7, 4795-4798.

Clark, T. P.; Landis, C. R.; Freed, S. L.; Klosin, J.; Abboud, K. A. Highly Active, Regioselective, and Enantioselective Hydroformylation with Rh Catalysts Ligated by Bis-3,4-diazaphospholanes. J. Am. Chem. Soc. 2005; 127, 5040-5042.

Cobley, C. J.; Klosin, J.; Qin, C.; Whiteker, G. Parallel Screening of Olefin Mixtures in Asymmetric Hydroformylation Reactions, Org. Lett. 2004, 6, .

Cobley, C. J.; Gardner, K.; Klosin, J.; Praquin, C.; Hill, C.; Whiteker, G. T.; Zanotti-Gerosa, A.; Petersen, J. L.; Abboud, K. A. The Synthesis and Application of a New Bisphosphite Ligand Collection for Asymmetric Hydroformylation of Allyl CyanideJ. Org. Chem. 2004, 69, 4031-4040.

Cobley, C. J.; Gardner, K. J.; Klosin, J.; Lennon, I. C.; Rand, C. L.; Whiteker, G. T.; Zanotti-Gerosa, A. HTS identifies new catalyst ligands for AHF reactions. Sp2, 2003, 2, 28-29.

Klosin, J.; Kruper, W. J., Jr.; Nickias, P. N.; Roof, G. R.; De Waele, P.; Abboud, K. A. Heteroatom-Substituted Constrained Geometry Complexes. Dramatic Substituent Effect on Catalyst’s Efficiency and Polymer Molecular Weight. Organometallics 2001, 20, 2663-2665.

Klosin, J.; Roof, G. R.; Chen, E. Y.-X. Ligand Exchange and Alkyl Abstraction Involving Perfluoroaryl Boranes and Alanes with Aluminum and Gallium Alkyls. Organometallics 2000, 19, 4684-4686.

LaPointe, Robert E.; Roof, Gordon R.; Abboud, Khalil A.; Klosin, Jerzy. New Family of Weakly Coordinating Anions. J. Am. Chem. Soc. 2000, 122, 9560-9561.

Pluskota, D.; Fiedorow, P.; Abboud, K. A.; Klosin, J.; Koroniak, H. X-ray and computational studies of some 5-(perfluoroalkenyl) uracils. J. Fluorine Chem. 2000, 102, 111.

Feng, S.; Klosin, J.; Kruper, W. J., Jr.; McAdon, M. H.; Neithamer, D. R.; Nickias, P. N.; Patton, J. T.; Wilson, D. R.; Abboud, K. A.; Stern, C. L. Synthesis and Characterization of Cyclohexadienyl-Based Constrained Geometry Complexes. Organometallics 1999, 18, 1159-1167.

Jones, W. M.; Klosin, J. Transition-Metal Complexes of Arynes, Strained Cyclic Alkynes, and Strained Cyclic Cumulenes, Adv. Organomet. Chem., 1998, 42, 147-221.

Klosin, J. Jones, W. M.; Abboud, K. A. Structure of Bromo(Cycloheptatrienylidene)bis (triphenylphosphine) platinum(II). Abboud. Acta. Crys (C), 1996, C52, 1101-1104.

Klosin, J. Zheng, X.; Jones. W. M. Preparation and Fluxionality of a Bimetallic Pt-Mo Complex of Cycloheptatetraene. Organometallics, 1996, 15, 3788-3790.

Klosin, J.; Abboud, K. A.; Jones. W. M. Bis(triphenylphosphine)palladium Cycloheptadienynylium Tetrafluoroborate:A Palladium Complex of Tropyne. Organometallics, 1996, 15, 2465-2468.

Klosin, J. Abboud, K. A. Jones. W. M. Platinum-Molybdenum Complexes of Cyclic Tropynes, Cumulenes, and Alkynes. Organometallics 1996, 15, 596-603.

Klosin, J.; Abboud, K. A.; Jones. W. M. Synthesis and Reactivity of Platinum Complexes of Cyclic Alkynes and Tropynes. Organometallics, 1995, 14, 2892-2902.

Yin, Y.; Klosin, J.; Abboud, K. A.; Jones. W. M. Preparation and Properties of a Ruthenium Complex of 1-Silaallene. J. Am. Chem. Soc., 1995, 117, 3298-3299.

Yin, Y.; Klosin, J.; Abboud, K. A.; Jones, W. M. Synthesis and Molecular Structure of Two Zirconocene Complexes of Cyclooctatrienyne. Tetrahedron Lett., 1995, 36, 3107-3120.

Gulinski, J.; Klosin, J.; Marciniec, B. Catalysis of Hydrosilylation. Part XXIV H2PtCl6in Cyclohexanone as Hydrosilylation Catalyst - What is the Actual Catalyst in This Catalytic System? Appl. Organomet. Chem. 1994, 8, 409.