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 ...
studies on the oxidative cleavage of the cc triple bond during the autoxidation of acetylenic hydrocarbons. iii. studies on the role of phenylglyoxal in the autoxidation of phenylacetylene-研究的CC三键的炔烃的自氧化过程中的氧化裂解。 III... TSS Rao,W Pritzkow - 《Advanced Synthesis & Catalysis》...
A tungstendiiron cluster [NEt4][WFe2[mu]3-[eta]3, [eta]5-CH=C=C(t Bu)C(O)C2B9H8Me2(CO)8] derived from [Fe2(CO)9] and [NEt4][W[triple bond; length as m-dash] CC[triple bond; length as m-dash]CtBu)(CO)2-([eta]5-C2B9H9Me2)] ...
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...
cavity adjustmentcavi cavity dumper cavity length ascenda cavity magnetroncavit cavity maser cavity of pubic symph cavity producing smil cavity ringdown spect cavitymistuning cavityrsonator cavum mediastinal med cavyanatt cawdor castle cawed caws caution and warn cax allowable axial c cayenne-pfefferhuhn...
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...
Bottom: fluorescence localization on the length axis of the same single cell over time. e, Model for spatiotemporal control of replication by CcrZ. In S. pneumoniae, CcrZ is brought to the middle of the cell where the DnaA-bound origin of replication is already positioned. CcrZ then ...
For decades one has strived to synthesize a compound with the longest covalent C−C bond applying predominantly steric hindrance and/or strain to achieve this goal. On the other hand electronic effects have been added to the repertoire, such as realize
44.m ultiple(double, triple) covalent bond:在相同的两个原子之间可以共享一对以上的电子,从而产生所谓的多个共价键。 45.C oordinate covalent bond(配位共价键):当共价键中共用的电子对是由其中一原子(donor atom施主原子)独自供应,另一原子(acceptor atom受主原子)提供空轨道时,就形成配位键。 46.R eson...
bond angle 键角(与同一原子连接的两个键 之间的角度) bond enthalpy bond length 键长(分子中两个原子核间的 平衡距离) phosphate 磷酸盐 bonding pair 成键电子对 pipette 移液管 brine 盐水 positive ion (=cation) 阳离子 brittle 脆的 precipitation reaction 沉淀反应 building-block(=monomer unit) 单体(...