CC triple bond stabilisationplanar tetracoordinated C atomthree-membered ring compoundsborirynedilithiumcyclopropyneberylliryneAb initio calculations have been performed on the title compounds. At 3-21G, boriryne is not a minimum on the potential energy hypersurface. The 3-21G optimized minimum of ...
The possibilities of additions to the activated CC triple bond are discussed with the aid of a number of examples. The additions of donors that contain no active hydrogen are generally initiated via a dipolar primary complex, which can undergo stabilization by rearrangement, cyclization, or addition...
Net hydrogenation of carbon–carbon double and triple bonds is readily achieved by a two-stage process involving initial addition of BH across the multiple bond, and subsequent protonolysis of the BC bond (Scheme 1).Access through your organization Check access to the full text by signing in ...
The (CMe)W(O)(CCPh) fragment in this molecule, which serves as a six-electron-donor ligand, uses one of the W-O multiple bonds and the acetylide C-C triple bond to fill three adjacent coordination sites on the Rumetal triangle of central Ru(-C) framework. Thermolysis of 1 in ...
In the isaF overexpres- sion strain (CPCC 204095/pL-isaF), the yield of both isatropolone A and C was approximately triple of that of the CPCC 204095 (Fig. 2C). Conversely, in the isaF knockout strain FKO, the deletion of isaF led to the abol- ishment of all isatropolone ...
Coupling reaction between the uncoordinated acetylenic bond of [Ru 3 (CO) 10 {μ 3 -FcC 2 C CFc}] and FcC CC CFc to form [Ru 2 (CO) 6 {C 4 Fc 2 (C CFc) 2 }... Coupling reaction between the uncoordinated acetylenic bond of [Ru3(CO)10{渭3-FcC2CCFc}] and FcCCCCFc to ...
Volume 464, Issue 2, 25 January 1994, Pages 219–223 About ScienceDirect Contact and support Information for advertisers Terms and conditions Privacy policy Copyright © 2014 Elsevier B.V. except certain content provided by third parties. ScienceDirect® is a registered trademark of Elsev...
(dppe)Cp∗ 1 is a strong nucleophile, its reaction with tcne, for example, affording the tricyanovinylethynyl complex Ru{CCC(CN)C(CN)2}(dppe)Cp∗ [12], rather than the anticipated tetracyanobutadienyl complex formed by a [2 + 2]-cycloaddition of the alkene to the CC triple bond,...
Ring-closing alkene metatheses of trans,trans-(C6F5)(Ph2P-Z-CH=CH2)2Pt(C[triple bond]C)4Pt(Ph2P-Z-CH=CH2)2(C6F5) (Z = (CH2)9, (CH2)4O(CH2)2), followed by hydrogenation, give the title compounds; the former exhibits an exceptionally twisted conformation, and the latter establishes...
Moving to a triple-𝜁ζ quality basis set reduces these errors by a factor of ∼2–3. Namely, the frozen-core CC/cc-pVTZ level of the theory results in deviations from the experiment of 55 (𝐵𝑒Be) and 66 (𝐶𝑒Ce) MHz, which translate to percentage errors of 1.6 and 2.1...