Topic
Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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TL;DR: In this paper, the molecular structure of [CO 2 (μ-C 2 (CH 2 SMe) 2 Mo(CO) 4 (molybdenum tetracarbonyl moiety) has been established by X-ray diffraction.
8 citations
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TL;DR: In this paper, the molecular structures of 1, 2, and 4 have been determined by X-ray diffraction, best described as having distorted trigonal bipyramidal geometry with the olefinic bonds of Nbd spanning axial-equatorial sites; in 1 and 2 the other equatorial positions are occupied by the diimine groups and the PPh3 is in axial position.
8 citations
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TL;DR: The addition of difluorocarbene to bicyclo[222]octa-2,5-diene gave the exo and endo 1:1 cyclopropane adducts.
Abstract: The addition of difluorocarbene to bicyclo[222]octa-2,5-diene gave the exo and endo 1:1 cyclopropane adducts In contrast to norbornadiene, no homo-1,4 adduct was formed The adducts were thermally stable under the conditions of their formation and separation (<170°) However, smooth equilibration was achieved on heating at 250° for 36 h The same mixture resulted from either isomer At 250° ΔΔG = 183 kcal/mol; the endo isomer being the more stable Heating to higher temperatures caused decomposition, rather than further reaction to the intramolecular [2+2]cyclization products The kinetic and thermodynamic product compositions were essentially the same on extrapolating to the same temperature, viz endo/exo = 19–22 at 25° The mechanisms by which the cyclo-addition and the stereomutation of the cis-fused cyclopropane moiety occur are discussed
8 citations
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TL;DR: In this article, the effect of the structure and the method of preparation and pretreatment of the catalysts on their activity and selectivity in norbornadiene cycloaddition was studied.
Abstract: It has been shown that norbornadiene is dimerized in the presence of rhodium-containing zeolite catalysts, forming hexacyclic [4+2]dimers preferentially. The effect of the structure and the method of preparation and pretreatment of the catalysts on their activity and selectivity in norbornadiene cycloaddition was studied. The influence of the above parameters on the change in the electronic state of rhodium in the course of the reaction was also investigated.
8 citations
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TL;DR: The organometallic anion [(C5H5)Co{P(O)(OC2H5)-3]− reacts as a tridentate oxygen ligand L− with [{RhCl(diolefin)}2] (dio-lefin = 1,5-cyclooctadiene, norbornadiene and tetrafluorobenzobarrelene, trimethyltetrafluorsobarbenobarrelenes, duroquinone) and [LRh(C2H4)2] in hexane or in
8 citations