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   https://doi.org/10.1021/acs.inorgchem.9b00399  

   Adams, Richard D. ; Smith, Mark D. ; Tedder, Jonathan D. ; Wakdikar, Nutan D. ( June 2019 , Inorganic Chemistry)
2. The Prototypical Transition Metal Carbenes, (CO) 5 Cr=CH 2 , (CO) 4 Fe=CH 2 , (CO) 3 Ni=CH 2 , (CO) 5 Mo=CH 2 , (CO) 4 Ru=CH 2 , (CO) 3 Pd=CH 2 , (CO) 5 W=CH 2 , (CO) 4 Os=CH 2 , and (CO) 3 Pt=CH 2 : Challenge to Experiment

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3. Unprecedented performance of N-doped activated hydrothermal carbon towards C 2 H 6 /CH 4 , CO 2 /CH 4 , and CO 2 /H 2 separation

   https://doi.org/10.1039/C5TA08436A  

   Yuan, Bin ; Wang, Jun ; Chen, Yingxi ; Wu, Xiaofei ; Luo, Hongmei ; Deng, Shuguang ( January 2016 , Journal of Materials Chemistry A)

   A series of N-doped porous carbons with different textural properties and N contents was prepared from a mixture of algae and glucose and their capability for the separation of CO 2 /CH 4 , C 2 H 6 /CH 4 , and CO 2 /H 2 binary mixtures under different conditions (bulk pressure, mixture composition, and temperature) were subsequently assessed in great detail. It was observed that the gas (C 2 H 6 , CO 2 , CH 4 , and H 2 ) adsorption capacity at different pressure regions was primarily governed by different adsorbent parameters (N level, narrow micropore volume, and BET specific surface area). More interestingly, it was found that N-doping can selectively enhance the heats of adsorption of C 2 H 6 and CO 2 , while it had a negligible effect on those of CH 4 and H 2 . The adsorption equilibrium selectivities for separating C 2 H 6 /CH 4 , CO 2 /CH 4 , and CO 2 /H 2 gas mixture pairs on the porous carbons were predicted using the ideal adsorbed solution theory (IAST) based on pure-component adsorption isotherms. In particular, sample NAHA-1 exhibited by far the best performance (in terms of gas adsorption capacity and selectivity) reported for porous carbons for the separation of these three binary mixtures. More significantly, NAHA-1 carbon outperforms many of its counterparts ( e.g. MOFs and zeolites), emphasizing the important role of carbonaceous adsorbents in gas purification and separation. 

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4. Inserting CO 2 into Aryl C−H Bonds of Metal–Organic Frameworks: CO 2 Utilization for Direct Heterogeneous C−H Activation

   https://doi.org/10.1002/ange.201511484  

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   Described for the first time is that carbon dioxide (CO₂) can be successfully inserted into aryl C−H bonds of the backbone of a metal–organic framework (MOF) to generate free carboxylate groups, which serve as Brønsted acid sites for efficiently catalyzing the methanolysis of epoxides. The work delineates the very first example of utilizing CO₂for heterogeneous C−H activation and carboxylation reactions on MOFs, and opens a new avenue for CO₂chemical transformations under mild reaction conditions.

    

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5. Rhodium( i )-catalyzed directed trideuteromethylation of (hetero)arene C–H bonds with CD 3 CO 2 D

   https://doi.org/10.1039/D2OB01581A  

   Zhao, Haoqiang ; Zeng, Qi ; Yang, Ji ; Xu, Bing ; Lei, Haimin ; Xu, Lijin ; Walsh, Patrick J. ( October 2022 , Organic & Biomolecular Chemistry)

   A Rh( i )-catalyzed trideuteromethylation of heteroarenes with inexpensive and readily available deuterated acetic acid (CD 3 CO 2 D) with the aid of a N -containing directing groups is developed. The oxidant-free reaction is applicable to a wide range of heteroarene substrates, including 2-pyridones, indoles, aryl rings, pyrroles and carbazoles. It allows installation of CD 3 groups under straightforward reaction conditions. It is expected that the salient and practical features of this trideuteromethylation protocol will be of use to academic and industrial researchers. 

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