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1. Imido Group Interchange in Reactions of Zwitterionic Tantalum(V) Vinylimido Complexes and Nitriles

   https://doi.org/10.1021/acs.organomet.8b00241  

   Rahman, Md. Mamdudur ; Smith, Mark D. ; Peryshkov, Dmitry V. ( September 2018 , Organometallics)
2. A Tantalum Disulfide Charge-Density-Wave Stochastic Artificial Neuron for Emulating Neural Statistical Properties

   https://doi.org/10.1021/acs.nanolett.1c00108  

   Liu, Hefei ; Wu, Tong ; Yan, Xiaodong ; Wu, Jiangbin ; Wang, Nan ; Du, Zhonghao ; Yang, Hao ; Chen, Buyun ; Zhang, Zhihan ; Liu, Fanxin ; et al ( April 2021 , Nano Letters)
3. Tantalum sound velocity under shock compression

   https://doi.org/10.1063/1.5054332  

   Akin, Minta C. ; Nguyen, Jeffrey H. ; Beckwith, Martha A. ; Chau, Ricky ; Ambrose, W. Patrick ; Fat’yanov, Oleg V. ; Asimow, Paul D. ; Holmes, Neil C. ( April 2019 , Journal of Applied Physics)
4. Ultrahigh pressure equation of state of tantalum to 310 GPa

   https://doi.org/10.1080/08957959.2019.1641203  

   Burrage, Kaleb C. ; Perreault, Christopher S. ; Moss, Eric K. ; Pigott, Jeffrey S. ; Sturtevant, Blake T. ; Smith, Jesse S. ; Velisavljevic, Nenad ; Vohra, Yogesh K. ( July 2019 , High Pressure Research)
5. Catalytic intramolecular hydroamination of aminoallenes using titanium and tantalum complexes of sterically encumbered chiral sulfonamides

   https://doi.org/10.1039/D0DT02557G  

   Sha, Fanrui ; Shimizu, Emily A. ; Slocumb, Hannah S. ; Towell, Sydney E. ; Zhen, Yi ; Porter, Hanna Z. ; Takase, Michael ; Johnson, Adam ( January 2020 , Dalton Transactions)

   Catalysis using earth abundant metals is an important goal due to the relative scarcity and expense of precious metal catalysts. It would be even more beneficial to use earth abundant catalysts for the synthesis of common pharmaceutical structural motifs such as pyrrolidine and pyridine. Thus, developing titanium catalysts for asymmetric ring closing hydroamination is a valuable goal. In this work, four sterically encumbered chiral sulfonamides derived from naturally occurring amino acids were prepared. These compounds undergo protonolysis reactions with Ti(NMe 2 ) 4 or Ta(NMe 2 ) 5 to give monomeric complexes as determined by both DOSY NMR and X-raymore »crystallography. The resulting complexes are active for the ring closing hydroamination hepta-4,5-dienylamine to give a mixture of tetrahydropyridine and pyrrolidine products. However, the titanium complexes convert 6-methylhepta-4,5-dienylamine exclusively to 2-(2-methylpropenyl)pyrrolidine in higher enantioselectivity than those previously reported, with enantiomeric excesses ranging from 18-24%. The corresponding tantalum complexes were more selective with enantiomeric excesses ranging from 33-39%.« less