Comprehensive Comparison Between the Gas-phase SN2 Reactions at Carbon and at NitrogenSubmitted by Jun Zhu on Wed, 05/04/2016 - 17:35
As one of the most important chemical reactions, SN2 reactions play a central role in both synthetic chemistry and the development of mechanistic paradigms. Most of the previous attention has centered on substitution at carbon, whereas displacement at nitrogen is clearly less studied and less understood. The SN2@N reactions have enormous synthetic potential, especially in heterocyclic chemistry, which is a cornerstone of medicinal chemistry, and has been receiving increasing attention, both experimentally and computationally.
Congratulations to Hongchao and Ke for their paper selected as back cover in Chem. Asian J.Submitted by Jun Zhu on Thu, 12/31/2015 - 14:16
Congratulations to Jingjing for her paper selected as inside back cover in Chem. Commun.Submitted by Jun Zhu on Thu, 12/31/2015 - 14:11
For details, please check the link at http://pubs.rsc.org/en/content/articlelanding/2016/cc/c6cc90010k#!divAbstract
Synthesis of aromatic ruthenabenzothiophenes via C–H activation of thiophenesSubmitted by Jun Zhu on Sun, 12/27/2015 - 17:17
The first ruthenabenzothiophenes have been achieved via the C–H activation of thiophene. These species feature high thermal stability and resistance of a moderate oxidant, which constitute valuable addition to the rare metallaaromatic containing second-row transition metals.
Congratulations to Zhiyong for the joint paper accepted in Dalton TransactionsSubmitted by Jun Zhu on Sun, 12/27/2015 - 17:12
For details, please check the link at http://pubs.rsc.org/en/content/articlelanding/2015/dt/c5dt04557f#!divAbstract
Congratulations to Jingjing for her paper selected as inside back cover in ChemPhysChemSubmitted by Jun Zhu on Sat, 12/19/2015 - 21:40
Synthesis of digermylene-stabilized linear tetraboronate and boroxineSubmitted by Jun Zhu on Sat, 12/19/2015 - 21:18
Two newly discovered linear compounds tetraboronate and boroxine stabilized by digermylene are reported, which feature a B4O5 chain and a B3O3 ring, respectively. DFT calculations reveal that not only can digermylene stabilize the electron-deficient boron centers, but also increase the energies of the LUMOs of the boron moiety. Our results provide a hint for the development of boronate covalent organic frameworks.
Triplet State Aromaticity: NICS Criterion, Hyperconjugation, and Charge EffectsSubmitted by Jun Zhu on Tue, 11/17/2015 - 16:06
Aromaticity, one of the most important concepts in organic chemistry, has attracted considerable interest from both experimentalists and theoreticians. It remains unclear which NICS index is best to evaluate the triplet-state aromaticity. Here, we carry out thorough density functional theory (DFT) calculations to examine this issue. Our results indicate that among the various computationally available NICS indices, NICS(1)zz is the best for the triplet state.
σ Aromaticity Dominates in the Unsaturated Three-Membered Ring of Cyclopropametallapentalenes from Groups 7–9: A DFT StudySubmitted by Jun Zhu on Tue, 11/17/2015 - 15:49
Aromaticity, an old but still fantastic topic, has long attracted considerable interest of chemists. Generally, π aromaticity is described by π-electron delocalization in closed circuits of unsaturated compounds whereas σ-electron delocalization in saturated rings leads to σ aromaticity. Interestingly, our recent study shows that σ aromaticity can be dominating in an unsaturated three-membered ring (3MR) of cyclopropaosmapentalene. An interesting question is raised: Can the σ aromaticity, which is dominant in the unsaturated 3MR, be extended to other cyclopropametallapentalenes?
The Clar Structure in Inorganic BN Analogues of Polybenzenoid Hydrocarbons: Does it Exist or Not?Submitted by Jun Zhu on Fri, 11/13/2015 - 10:46
The Clar structure of polybenzenoid hydrocarbons (PBHs) have attracted considerable interest of both theoretical and experimental chemists since it was proposed in the 1950s. However, it remains unclear whether the Clar structure could exist in inorganic PBHs, the boron nitride (BN) analogues where the alternate boron and nitrogen atoms are used to replace the carbon atoms of PBHs. Here, we carry out thorough density functional theory (DFT) calculations to probe the possibility of Clar structures in BN analogues of PBHs.