Synthesis and Reactions of Palladium and Platinum Complexes Bearing Diphosphinidenecyclobutene Ligands: A Thermally Stable Catalyst for Ethylene Polymerization

Ikeda, Shintaro; Ohhata, Fumie; Miyoshi, Manabu; Tanaka, Rika; Minami, Tatsuya; Ozawa, Fumiyuki; Yoshifuji, Masaaki

doi:10.1002/1521-3773(20001215)39:24<4512::aid-anie4512>3.3.co;2-9

Cited by 3 publications

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“…[10][11][12][13][14] As the field has advanced, applications of phosphaalkenes are also being pursued. These include their use as ligands in transition-metal-catalyzed organic reactions 5,[15][16][17][18][19][20] and as sources for new inorganic polymers. [21][22][23] One strategy in the development of new inorganic polymers is to use addition polymerization of PdC bonds, yielding new poly(methylenephosphine)s. One example was reported for MesPdCPh 2 by Tsang et al 22 This group wished to extend this work to a wider range of substituents.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))

Watts

Huang

2009

J. Phys. Chem. A

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Ab initio theoretical calculations have been used to study the influence of phosphorus substituents, Y, on the tautomerism between the vinylphosphine XP(H)C(CH(3))=CH(2) and the phosphaalkene XP=C(CH(3))(2) (X = H, F, Cl, Br, OH, and Ar(F); Ar(F) = 2,6-(CF(3))(2)C(6)H(3)) and on the acidity of the aforementioned vinylphosphine. The stabilization of the phosphaalkene and the increased acidity of the vinylphosphine by Ar(F) are possible factors in the successful synthesis of certain isolable phosphaalkenes. In this work, the properties of Ar(F) are assessed theoretically. Density functional theory using the B3LYP functional has been used for all substituents. In addition, coupled-cluster singles and doubles with noniterative triples (CCSD(T)) has been used for X = H, F, Cl, Br, and OH. The phosphaalkene is favored over the vinylphosphine for all substituents, with F having the strongest stabilizing effect. Cl, Br, and OH have stronger stabilizing effects than Ar(F). In contrast, the most acidic vinylphosphine is that with Ar(F). To aid in the interpretation and analysis of future experimental work, CCSD(T) calculations were used to provide structures and vibrational frequencies for the series XP=C(CH(3))(2) (X = H, F, Cl, Br). The influence of the substituent on geometries and C=P and X-P stretching frequencies was examined, and comparisons were made with the CH(2)=PX series.

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Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))

Watts

Huang

2009

J. Phys. Chem. A

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“…The Ni-and Pd-based catalysts containing N-N , N-O [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68] , P-N [69][70][71][72] , P-P [73][74][75][76][77] and P-O [78][79][80][81][82][83][84] ligands have been synthesized and applied in ethylene polymerization to yield branched polymer. By comparison, the Ni and Pd-based catalysts containing N-N inherit stronger branched capability than other catalyst and can catalyze ethylene polymerization to produce branched polyethylene with more than 100 branches per 1000 carbons.…”

Section: Controlling the Branching Structure Of Polyethylenementioning

confidence: 99%

Recent Research Progress of Branched and Functional Branched Polyethylene Prepared Using Ni- and Pd–Based Catalysts

Xiao

Zhou

Zheng

et al. 2010

Polymer-Plastics Technology and Engineering

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In this paper, the recent development of branched and functional branched polyethylene prepared using Ni-and Pd-based catalysts are reviewed. The influence of ligand species, steric effect, electronic effect and polymerization condition on branching density of resultant polymer prepared using Ni-and Pd-based catalysts is discussed. In addition, the review is also focused on functional branched polyethylene produced by copolymerization of ethylene and polar monomer and copolymerization mechanism.

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“…For example, phosphaalkenes have been employed as ligands in transition-metal-catalysed organic reactions [3][4][5][6][7] and for the synthesis of new inorganic polymers [8][9][10]. The use of bulky substituents on phosphorus has facilitated the development of several synthetic routes to phosphaalkenes [2].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of the platinum complexes [PtCl(CClPAr)(PPh3)2] and [PtCl(CClPAr′)(PPh3)2] as potential intermediates in the preparation of phosphaalkynes

Cornet

Dillon

Goeta

et al. 2005

Journal of Organometallic Chemistry

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Synthesis and Reactions of Palladium and Platinum Complexes Bearing Diphosphinidenecyclobutene Ligands: A Thermally Stable Catalyst for Ethylene Polymerization

Cited by 3 publications

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Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))

Recent Research Progress of Branched and Functional Branched Polyethylene Prepared Using Ni- and Pd–Based Catalysts

Synthesis and characterisation of the platinum complexes [PtCl(CClPAr)(PPh3)2] and [PtCl(CClPAr′)(PPh3)2] as potential intermediates in the preparation of phosphaalkynes

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Synthesis and Reactions of Palladium and Platinum Complexes Bearing Diphosphinidenecyclobutene Ligands: A Thermally Stable Catalyst for Ethylene Polymerization

Cited by 3 publications

References 0 publications

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH3)2(X = H, F, Cl, Br, OH, ArF(ArF= 2,6-(CF3)2C6H3))

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH3)2(X = H, F, Cl, Br, OH, ArF(ArF= 2,6-(CF3)2C6H3))

Recent Research Progress of Branched and Functional Branched Polyethylene Prepared Using Ni- and Pd–Based Catalysts

Synthesis and characterisation of the platinum complexes [PtCl(CClPAr)(PPh3)2] and [PtCl(CClPAr′)(PPh3)2] as potential intermediates in the preparation of phosphaalkynes

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Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))

Theoretical Study of the Tautomerism, Structures, and Vibrational Frequencies of the Phosphaalkenes XP═C(CH₃)₂(X = H, F, Cl, Br, OH, Ar_F(Ar_F= 2,6-(CF₃)₂C₆H₃))