Cooperative B-H activation by Cp based κ-,-chelated Ru() and Mo() complexes (Cp = η-CMe)

• Published in: Dalton transactions : an international journal of inorganic chemistry 2022-03, Vol.51 (12), p.486-4813
• Main Authors: Saha, Suvam, Haridas, Anagha, Assanar, Faneesha, Bansal, Charu, Sudhadevi Antharjanam, P. K, Ghosh, Sundargopal
• Format: Article
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d2dt00242f

The chemistry of the Cp* based κ 2 - N,S -chelated ruthenium complex, [Cp*RuPPh 3 (κ 2 - N,S -(NC 7 H 4 S 2 )], 1 with different boranes has been explored. The room temperature reaction of 1 with BH 3 ·THF and bulky boranes, such as MesBH 2 and H 2 BAr F , led to the formation of different dihydridoborate complexes, [{κ 3 - S,H,H -(NBH 2 R)(S 2 H 4 C 7 )}RuCp*], 2-4 ( 2 : R = H, 3 : R = Mes, and 4 : R = Ar F ; Mes = 2,4,6-trimethylphenyl, and Ar F = 3,5-bistrifluoromethyl-benzene). In contrast, the Cp* based κ 2 - N,S -chelated molybdenum complex, [Cp*Mo(CO) 2 {κ 2 - N,S -(NC 7 H 4 S 2 )}], 5 , yielded the agostic borate species, [Cp*Mo(CO) 2 {κ 2 - S,H -(NBH 2 R) (NC 7 H 4 S 2 )}], 6 and 7 ( 6 : R = Mes and 7 : R = Ar F ) at elevated temperatures. The chemistry of Cp* based groups 5, 6 and 8 metal complexes containing a κ 2 - N , S -chelated ligand has been examined with free and bulky boranes that exhibit diverse reactivity patterns.