3D-QSAR as a Tool for Understanding and Improving Single-Site Polymerization Catalysts. A Review

This paper reviews the findings of quantitative structure–activity relationship (QSAR) studies focusing on single-site polymerization catalysts, with special attention paid to the use of 3D-QSAR tools. Such tools reveal the fine details of catalyst structure that may be correlated with polymerization activity or the properties of the synthesized polymer. The introduction of effective single-site polymerization catalysts, in addition to allowing scientists to synthesize new tailor-made polymers, has enabled a detailed theoretical analysis of the synthesis process. The benefits of single-site polymerization for theoretical studies include easy elucidation of the catalyst structure, a well-defined mechanism of action, and the fact that experiments can be systematically conducted on catalyst series featuring different substitution patterns. Using QSAR methods, experimental results can be related to theoretical measurements through statistical or chemometric tools. These tools have been extensively and success...

[1]  A. Churakov,et al.  5-Methoxy-Substituted Zirconium Bis-indenyl ansa-Complexes: Synthesis, Structure, and Catalytic Activity in the Polymerization and Copolymerization of Alkenes , 2012 .

[2]  V. Cruz,et al.  Polymerization Activity Prediction of Zirconocene Single-Site Catalysts Using 3D Quantitative Structure–Activity Relationship Modeling , 2012 .

[3]  T Mavromoustakos,et al.  Strategies in the rational drug design. , 2011, Current medicinal chemistry.

[4]  Alexander D. MacKerell,et al.  Recent advances in ligand-based drug design: relevance and utility of the conformationally sampled pharmacophore approach. , 2011, Current computer-aided drug design.

[5]  T. Pakkanen,et al.  Elemental Reactions in Copolymerization of α-Olefins by Bis(cyclopentadienyl) Zirconocene and Hafnocene: Effects of the Metal as a Function of the Monomer and the Chain End , 2011 .

[6]  Xiang-Qun Xie,et al.  Recent Advances in Fragment-Based QSAR and Multi-Dimensional QSAR Methods , 2010, International journal of molecular sciences.

[7]  Sheng-Yong Yang,et al.  Pharmacophore modeling and applications in drug discovery: challenges and recent advances. , 2010, Drug discovery today.

[8]  T. Pakkanen,et al.  Comparative Theoretical Study on Homopolymerization of α-Olefins by Bis(cyclopentadienyl) Zirconocene and Hafnocene: Elemental Propagation and Termination Reactions between Monomers and Metals , 2010 .

[9]  V. Cruz,et al.  Density functional study for the polymerization of ethylene monomer using a new nickel catalyst , 2010 .

[10]  Yongqiang Zhu,et al.  Pharmacophore based drug design approach as a practical process in drug discovery. , 2010, Current computer-aided drug design.

[11]  Jitender Verma,et al.  3D-QSAR in drug design--a review. , 2010, Current topics in medicinal chemistry.

[12]  T Scior,et al.  How to recognize and workaround pitfalls in QSAR studies: a critical review. , 2009, Current medicinal chemistry.

[13]  A. Toro‐Labbé,et al.  Theoretical Study on a Multicenter Model Based on Different Metal Oxidation States for the Bis(imino)pyridine Iron Catalysts in Ethylene Polymerization , 2009 .

[14]  A. Hopfinger,et al.  The receptor-dependent QSAR paradigm: an overview of the current state of the art. , 2009, Medicinal chemistry (Shariqah (United Arab Emirates)).

[15]  G. Fayet,et al.  Iron bis(arylimino)pyridine precursors activated to catalyze ethylene oligomerization as studied by DFT and QSAR approaches , 2009 .

[16]  R. Clark Prospective ligand- and target-based 3D QSAR: state of the art 2008. , 2009, Current topics in medicinal chemistry.

[17]  E. Álvarez,et al.  Nickel 2-Iminopyridine N-Oxide (PymNox) Complexes: Cationic Counterparts of Salicylaldiminate-Based Neutral Ethylene Polymerization Catalysts , 2008 .

[18]  K. Chou,et al.  Recent advances in QSAR and their applications in predicting the activities of chemical molecules, peptides and proteins for drug design. , 2008, Current protein & peptide science.

[19]  Jorge Martínez,et al.  On the nature of the active site in bis(imino)pyridyl iron, a catalyst for olefin polymerization , 2008 .

[20]  E. Hey‐Hawkins,et al.  Synthesis, characterization and catalytic behaviour of ansa-zirconocene complexes containing tetraphenylcyclopentadienyl rings : X-ray crystal structures of [Zr{Me2Si(η5-C5Ph4)(η5-C5H3R)}Cl2] (R = H, But) , 2008 .

[21]  Jorge Martínez,et al.  QSAR model for ethylene polymerisation catalysed by supported bis(imino)pyridine iron complexes , 2007 .

[22]  V. Cruz,et al.  Proposed Polymerization Termination Mechanism for 3-R-Indenyl ansa-Zirconocenes (R = n-Alkyl) Based on DFT Calculations and Experimental Observations , 2007 .

[23]  S. Gómez‐Ruiz,et al.  3D-QSAR study of ansa-metallocene catalytic behavior in ethylene polymerization , 2007 .

[24]  J. Soares,et al.  Comparative study of propylene polymerization using Me2Si (RInd )2ZrCl2 /SiO2-SMAO /AlR3 and Me2Si(RInd)2ZrCl2/MAO (R = Me, H) , 2007 .

[25]  V. Cruz,et al.  Isomeric effect of the Et(H4Ind)2Zr(CH3)2 catalyst on the copolymerization of ethylene and styrene: A computational study , 2006 .

[26]  Anne M. LaPointe,et al.  Nonconventional catalysts for isotactic propene polymerization in solution developed by using high-throughput-screening technologies. , 2006, Angewandte Chemie.

[27]  V. Cruz,et al.  A QM/MM study of the ethylene and styrene insertion process into the ion pair [Me2Si(C5Me4)(NtBu)Ti(CH2CH2CH3)]+[μ-Me–Al(Me)2–(AlOMe)6Me]− , 2006 .

[28]  Robert Langer,et al.  Combinatorial Material Mechanics: High‐Throughput Polymer Synthesis and Nanomechanical Screening , 2005 .

[29]  V. Cruz,et al.  Structure-Activity Relationship Study of the Metallocene Catalyst Activity in Ethylene Polymerization , 2005 .

[30]  Robert Langer,et al.  Biomaterial microarrays: rapid, microscale screening of polymer-cell interaction. , 2005, Biomaterials.

[31]  V. Cruz,et al.  An experimental and computational evaluation of ethylene/styrene copolymerization with a homogeneous single-site titanium(IV)-constrained geometry catalyst , 2005 .

[32]  V. Cruz,et al.  Ethylene-styrene copolymerization with constrained geometry catalysts: a density functional study. , 2005, The Journal of chemical physics.

[33]  B. Mu,et al.  Synthesis and structures of cycloalkylidene-bridged cyclopentadienyl metallocene catalysts: effects of the bridges of ansa-metallocene complexes on the catalytic activity for ethylene polymerization. , 2005, Chemistry.

[34]  V. Cruz,et al.  Ethylene/styrene copolymerisation by homogeneous metallocene catalysts: experimental and molecular simulations using rac-ethylenebis(tetrahydroindenyl)MCl2 [M=Ti,Zr] systems , 2004 .

[35]  Peter C. Fox,et al.  Statistical variation in progressive scrambling , 2004, J. Comput. Aided Mol. Des..

[36]  V. Cruz,et al.  3D-QSAR analysis of metallocene-based catalysts used in ethylene polymerisation , 2004 .

[37]  Haruki Nakamura,et al.  Announcing the worldwide Protein Data Bank , 2003, Nature Structural Biology.

[38]  E. Rytter,et al.  Structure–property transition‐state model for the copolymerization of ethene and 1‐hexene with experimental and theoretical applications to novel disilylene‐bridged zirconocenes , 2003 .

[39]  P. Geerlings,et al.  Conceptual density functional theory. , 2003, Chemical reviews.

[40]  V. Cruz,et al.  DFT study of hydrogenolysis as a chain transfer mechanism in olefin polymerisation catalysed by nickel-diimine-type catalysts , 2003 .

[41]  V. Cruz,et al.  Computational studies of the Brookhart's type catalysts for ethylene polymerisation. Part 2: ethylene insertion and chain transfer mechanisms , 2003 .

[42]  Hugo Kubinyi,et al.  From Narcosis to Hyperspace: The History of QSAR , 2002 .

[43]  C. B. Koning,et al.  Zirconium bis-cyclopentadienyl compounds: An investigation into the influence of substituent effects on the ethene polymerisation behaviour of (CpR)2ZrCl2/MAO catalysts , 2002 .

[44]  V. Cruz,et al.  A computational study of iron-based Gibson–Brookhart catalysts for the copolymerisation of ethylene and 1-hexene , 2002 .

[45]  Eric J. Amis,et al.  Combinatorial Methods for Investigations in Polymer Materials Science , 2002 .

[46]  Eric J. Amis,et al.  Combinatorial Materials Science: What’s New Since Edison? , 2002 .

[47]  C. B. Koning,et al.  Zirconium bis-indenyl compounds. The influence of substituents on the ethene polymerization behavior of 1- and 2-substituted (R-Ind)2ZrCl2/MAO catalysts , 2002 .

[48]  V. Cruz,et al.  Computational studies of the Brookhart's type catalysts for ethylene polymerization. 1. Effect of the active site conformations on the catalyst activities , 2001 .

[49]  V. Cruz,et al.  Ab initio study of ethylene insertion into M-C bonds of alkylamidinates complexes of group IV ({R'NCRNR'}2MCH3+, M = Zr, Ti, R = H, Ph and R' = H, SiMe3) , 2001 .

[50]  A. Good,et al.  3-D pharmacophores in drug discovery. , 2001, Current pharmaceutical design.

[51]  T. Pakkanen,et al.  Theoretical Study on the Factors Controlling the Accessibility of Cationic Metal Centers in Zirconocene Polymerization Catalysts , 2000 .

[52]  E. Rytter,et al.  Ethene homopolymerization and copolymerization with 1‐hexene for all methyl‐substituted (RnC5H5−n)2ZrCL2/MAO catalytic systems: Effects of split methyl substitution , 2000 .

[53]  V. Cruz,et al.  Ab initio study of hydrogenolysis as a chain transfer mechanism in olefin polymerization catalyzed by metallocenes , 2000 .

[54]  H. Alt,et al.  Effect of the Nature of Metallocene Complexes of Group IV Metals on Their Performance in Catalytic Ethylene and Propylene Polymerization. , 2000, Chemical reviews.

[55]  Christian Lemmen,et al.  Computational methods for the structural alignment of molecules , 2000, J. Comput. Aided Mol. Des..

[56]  S. Niu,et al.  Theoretical studies on reactions of transition-metal complexes. , 2000, Chemical reviews.

[57]  D. F. Lewis Frontier orbitals in chemical and biological activity: quantitative relationships and mechanistic implications. , 1999, Drug metabolism reviews.

[58]  T. Shoji,et al.  Consideration of an activity of the metallocene catalyst by using molecular mechanics, molecular dynamics and QSAR , 1999 .

[59]  V. Cruz,et al.  A theoretical study of the comonomer effect in the ethylene polymerization with zirconocene catalytic systems , 1998 .

[60]  H. Kubinyi QSAR and 3D QSAR in drug design Part 1: methodology , 1997 .

[61]  Walter Kaminsky,et al.  New polymers by metallocene catalysis , 1996 .

[62]  V. Cruz,et al.  Ab initio calculation of ethylene insertion in zirconocene catalyst systems: A comparative study between bridged and unbridged complexes , 1996 .

[63]  N. Coville,et al.  The influence of cyclopentadienyl ring substituent steric and electronic effects on the ethylene-α-olefin copolymerisation behaviour of (CpR)2ZrCl2ethylalumoxane catalysts , 1995 .

[64]  N. Coville,et al.  Homogeneous group 4 metallocene ziegler-natta catalysts: The influence of cyclopentadienyl-ring substituents , 1994 .

[65]  Tom K. Woo,et al.  A density functional study of chain growing and chain terminating steps in olefin polymerization by metallocene and constrained geometry catalysts , 1994 .

[66]  S. Wold,et al.  A PLS kernel algorithm for data sets with many variables and fewer objects. Part 1: Theory and algorithm , 1994 .

[67]  T. Woo,et al.  Density Functional Study of the Insertion Step in Olefin Polymerization by Metallocene and Constrained-Geometry Catalysts , 1994 .

[68]  P. Burger,et al.  Structure‐activity and structure‐selectivity correlations in metallocene‐based catalysts for α‐olefin polymerization , 1993 .

[69]  N. Coville,et al.  Quantification of the influence of steric and electronic parameters on the ethylene polymerisation activity of (CpR)2ZrCl2/ethylaluminoxane Ziegler—Natta catalysts , 1992 .

[70]  T. Ziegler Approximate Density Functional Theory as a Practical Tool in Molecular Energetics and Dynamics , 1991 .

[71]  G. Bondarenko,et al.  IR and NMR studies on zirconocene dichloride/methylalumoxane systemscatalysts for olefin polymerization , 1991 .

[72]  A. Sironi,et al.  Electronic effects in homogeneous indenylzirconium Ziegler-Natta catalysts , 1990 .

[73]  A. Rheingold,et al.  Synthetic, X-ray structural and polymerization studies on isopropyltetramethylcyclopentadienyl derivatives of titanium , 1990 .

[74]  A. Razavi,et al.  Metallocene–methylaluminoxane catalyst for olefin polymerization. II. Bis‐η5‐(neomenthyl cyclopentadienyl)zirconium dichloride , 1988 .

[75]  R. Cramer,et al.  Comparative molecular field analysis (CoMFA). 1. Effect of shape on binding of steroids to carrier proteins. , 1988, Journal of the American Chemical Society.

[76]  R. Parr,et al.  Hardness, softness, and the fukui function in the electronic theory of metals and catalysis. , 1985, Proceedings of the National Academy of Sciences of the United States of America.

[77]  G. Nicoletti,et al.  Homogeneous Ziegler–Natta catalysis. II. Ethylene polymerization by IVB transition metal complexes/methyl aluminoxane catalyst systems , 1985 .

[78]  S. Wold,et al.  The Collinearity Problem in Linear Regression. The Partial Least Squares (PLS) Approach to Generalized Inverses , 1984 .

[79]  Malcolm L. H. Green,et al.  Carbon-hydrogen-transition metal bonds , 1983 .

[80]  H. Sinn,et al.  Bis(cyclopentadienyl)zirkon‐verbindungen und aluminoxan als Ziegler‐Katalysatoren für die polymerisation und copolymerisation von olefinen , 1983 .

[81]  W. Kaminsky,et al.  “Living Polymers” on Polymerization with Extremely Productive Ziegler Catalysts , 1980 .

[82]  P. Cossee,et al.  Ziegler-Natta catalysis III. Stereospecific polymerization of propene with the catalyst system TiCl3AlEt3 , 1964 .

[83]  P. Cossee Ziegler-Natta catalysis I. Mechanism of polymerization of α-olefins with Ziegler-Natta catalysts , 1964 .

[84]  Paolo Tosco,et al.  Open3DQSAR: a new open-source software aimed at high-throughput chemometric analysis of molecular interaction fields , 2011, Journal of molecular modeling.

[85]  Gerard J. P. van Westen,et al.  Proteochemometric modeling as a tool to design selective compounds and for extrapolating to novel targets , 2011 .

[86]  Angelo D. Favia Theoretical and computational approaches to ligand-based drug discovery. , 2011, Frontiers in Bioscience.

[87]  Baiquan Wang Ansa-metallocene polymerization catalysts: Effects of the bridges on the catalytic activities , 2006 .

[88]  N. Coville,et al.  Group 4 metallocene polymerisation catalysts: quantification of ring substituent steric effects , 2006 .

[89]  S Stefan Schmatloch,et al.  Techniques and Instrumentation for Combinatorial and High‐Throughput Polymer Research: Recent Developments , 2004 .

[90]  Gregori Ujaque,et al.  Applications of Hybrid DFT/Molecular Mechanics to Homogeneous Catalysis , 2004 .

[91]  V. Cruz,et al.  Copolymerization of ethylene and styrene by homogeneous metallocene catalysts. 1. Theoretical studies with rac-ethylenebis-(tetrahydroindenyl)MCl2 [M=Ti, Zr] systems , 2003 .

[92]  V. Cruz,et al.  A theoretical study of ethylene–styrene copolymerization by using half-sandwich Cp-based titanium catalysts , 2002 .

[93]  Max Dobler,et al.  Multi-dimensional QSAR in drug research , 2000 .

[94]  P. Geerlings,et al.  HSAB principle: Applications of its global and local forms in organic chemistry , 2000 .

[95]  E. Rytter,et al.  Quantitative Structure-Activity Relationships for Unbridged Zirconocene Catalysts During Ethene Polymerization , 1999 .

[96]  K. Morokuma,et al.  Theoretical studies of the mechanism of ethylene polymerization reaction catalyzed by diimine-M(II) (M = Ni, Pd and Pt) and Ti- and Zr-chelating alkoxides , 1999 .

[97]  Roy J. Vaz A QSPR for the Tg of polymers: The Koehler‐Hopfinger approach using the tripos 5.2 force field , 1993 .

[98]  D. E. Patterson,et al.  Crossvalidation, Bootstrapping, and Partial Least Squares Compared with Multiple Regression in Conventional QSAR Studies , 1988 .