Synthesis and Characterisation of Some New Complexes of Molybdenum(II) and Tungsten(II) Containing Anionic and Neutral Sulphur Donor Ligands PDF Download
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Author: Alec Ian Clark
Publisher:
ISBN:
Category :
Languages : en
Pages : 338
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Book Description
Author: Alec Ian Clark
Publisher:
ISBN:
Category :
Languages : en
Pages : 338
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Book Description
Author: Alec Ian Clark
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Sharman Donna Harris
Publisher:
ISBN:
Category :
Languages : en
Pages : 444
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Author: Charles Graham Young
Publisher:
ISBN:
Category : Complex compounds
Languages : en
Pages : 217
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Author: Deborah Sian Evans
Publisher:
ISBN:
Category :
Languages : en
Pages : 576
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Author: Keith Anthony Hall
Publisher:
ISBN:
Category : Ligands
Languages : en
Pages : 486
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 426
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Book Description
Theses on any subject submitted by the academic libraries in the UK and Ireland.
Author: Harry Craig Silvis
Publisher:
ISBN:
Category : Complex compounds
Languages : en
Pages : 340
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Book Description
Author: Janis Musso
Publisher: Cuvillier Verlag
ISBN: 3736966113
Category : Science
Languages : en
Pages : 186
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Book Description
Recently, the synthesis of neutral and cationic group(VI) imido/oxo alkylidene N-heterocyclic carbene (NHC) complexes that tolerate protic functional groups and aldehydes was reported. Unprecedented turnover numbers of up to 1.2 million were found for their silica-supported representatives. Some group(VI) alkylidene NHC complexes even display stability towards moisture and air. Coordination of the NHC to tungsten imido bistriflate precursor complexes, however, can lead to undesired side reactions. This work consequently aimed at the development of novel, more efficient routes to neutral and cationic tungsten imido/oxo alkylidene NHC complexes. In addition, some molybdenum imido alkylidene NHC complexes were targeted. Thereby, the scope of synthetically accessible complexes was broadened and, subsequently, their reactivity in ring-opening metathesis polymerization (ROMP) was probed. Those complexes were used as thermally latent initiators for the ROMP of dicyclopentadiene. Precise determination of the onset temperature of polymerization was achieved via monitoring with differential scanning calorimetry. Furthermore, the selectivity of novel complexes was tested for the formation of stereoregular polymers through ROMP of enantiomerically pure norbornene derivatives, which allowed for the synthesis of up to 98% trans-isotactic or cis-syndiotactic polymers depending on the steric demand of the imido and the alkoxide ligand.
Author: Jeffrey Hyde (R.)
Publisher:
ISBN:
Category : Molybdenum compounds
Languages : en
Pages : 196
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