Early Transition Metal Complexes of Triphosphorus Macrocycles

Baker, Robert J.; Davies, Philip C.; Edwards, Peter G.; Farley, Rebecca; Liyanage, S.; Murphy, Damien M.; Yong, Ben S.

doi:10.1002/1099-0682(200208)2002:8<1975::aid-ejic1975>3.0.co;2-i

“…62 These complexes exhibit moderate catalytic activity in the homogeneous ethylene polymerization in the presence of alkylaluminium as the cocatalyst, which provides the formation of highmolecular-mass polymers. 63 The same template was used for the synthesis of triphosphine macrocyclic ligands containing two 59 or three 61 o-phenylene groups.…”

Section: Scheme 28mentioning

confidence: 99%

Phosphorus-containing macrocyclic compounds: synthesis and properties

Knyazeva¹,

Бурилов²,

et al. 2013

View full text Add to dashboard Cite

Main trends in the development of methods for Main trends in the development of methods for the synthesis of phosphorus-containing macrocyclic com-the synthesis of phosphorus-containing macrocyclic compounds in the past 15 years are considered. Emphasis is pounds in the past 15 years are considered. Emphasis is given to reactions producing macrocyclic structures with the given to reactions producing macrocyclic structures with the participation of a phosphorus atom and other functional participation of a phosphorus atom and other functional groups involved in organophosphorus molecules and to groups involved in organophosphorus molecules and to modifications of macrocycles by phosphorus compounds modifications of macrocycles by phosphorus compounds in different valence states. Possibilities of the practical in different valence states. Possibilities of the practical application of phosphorus-containing macrocyclic com-application of phosphorus-containing macrocyclic compounds in difference areas of science and engineering are pounds in difference areas of science and engineering are discussed. The bibliography includes 205 references discussed. The bibliography includes 205 references. .

show abstract

Titanium: Organometallic Chemistry

Mintz

¹

2005

Encyclopedia of Inorganic Chemistry

View full text Add to dashboard Cite

The majority of titanium organometallic chemistry involves complexes in which the titanium is in its highest oxidation state (+4) with cyclopentadienyl derivatives as ancillary ligands. However, considerable chemistry has also been developed for complexes with titanium in the +3 and +2 oxidation state, with lesser amounts of chemistry developed for titanium in lower oxidation states (+1, 0). Since the early 1980s, chemists have placed considerable emphasis on the fine‐tuning of the structure and reactivity of titanium organometallic complexes. Particular emphasis has been devoted to tailoring the structure and reactivity of bis(cyclopentadienyl)titanium derivatives by incorporating electron‐donating, electron‐withdrawing, sterically demanding, or chiral substituents on the cyclopentadienyl ring. Considerable effort has gone into preparing ansa‐metallocenes with a wide variety of bridging groups and substituents to fine‐tune the reactivity catalysts prepared from them. In a similar manner, considerable effort has gone into the development of constrained geometry complexes. Several types of chiral substituted cyclopentadienyl, annulated cyclopentadienyl, ansa ‐metallocenes, and constrained geometry complexes have been prepared and applied to olefin polymerization and organic synthesis. Additional efforts at modifying the structure and reactivity by focusing on varying the oxidation state or coordination geometry at the titanium center have expanded over the past decade.

show abstract

Titanium: Organometallic Chemistry

Mintz

¹

2005

Encyclopedia of Inorganic and Bioinorganic Chemistry

0

View full text Add to dashboard Cite

The majority of titanium organometallic chemistry involves complexes in which the titanium is in its highest oxidation state (+4) with cyclopentadienyl derivatives as ancillary ligands. However, considerable chemistry has also been developed for complexes with titanium in the +3 and +2 oxidation state, with lesser amounts of chemistry developed for titanium in lower oxidation states (+1, 0). Since the early 1980s, chemists have placed considerable emphasis on the fine‐tuning of the structure and reactivity of titanium organometallic complexes. Particular emphasis has been devoted to tailoring the structure and reactivity of bis(cyclopentadienyl)titanium derivatives by incorporating electron‐donating, electron‐withdrawing, sterically demanding, or chiral substituents on the cyclopentadienyl ring. Considerable effort has gone into preparing ansa‐metallocenes with a wide variety of bridging groups and substituents to fine‐tune the reactivity catalysts prepared from them. In a similar manner, considerable effort has gone into the development of constrained geometry complexes. Several types of chiral substituted cyclopentadienyl, annulated cyclopentadienyl, ansa ‐metallocenes, and constrained geometry complexes have been prepared and applied to olefin polymerization and organic synthesis. Additional efforts at modifying the structure and reactivity by focusing on varying the oxidation state or coordination geometry at the titanium center have expanded over the past decade.

show abstract

Early Transition Metal Complexes of Triphosphorus Macrocycles

Cited by 25 publications

References 35 publications

Phosphorus-containing macrocyclic compounds: synthesis and properties

Phosphorus-containing macrocyclic compounds: synthesis and properties

Titanium: Organometallic Chemistry

Titanium: Organometallic Chemistry

Contact Info

Product

Resources

About