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Reactivity of Strontium Hydride Supported by the Superbulky Hydrotris(pyrazolyl)borate Ligand

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Hydrogenolysis of [(Tp Ad, i Pr )Sr{CH(SiMe 3 ) 2 }] ( 1 ) (Tp Ad, i Pr = hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate) in hexane solution under 20 atm of H 2 allowed for the isolation of strontium hydride [(Tp Ad, i Pr )Sr(μ-H)] 2 ( 2 ) in good yield. Complex 2 exhibits the dimeric nature in solid state, featuring two different bond modes between the Sr center and Tp Ad, i Pr ligand. Treatment of complex 2 with PhC(H)═N t Bu or PhCH 2 Bpin (Bpin = pinacolateborane) afforded the strontium amide complex [(Tp Ad, i Pr )Sr{N(CH 2 Ph)( t Bu)}] ( 4 ) and hydroborate complex [(Tp Ad, i Pr )Sr{μ-HBpin(CH 2 Ph)}] ( 5 ), respectively. Reactions of complex 2 with 2-picoline, 2-phenylquinoline, or 2-phenylpyridine led to the formation of strontium 2-pyridylmethylene/2-picoline complex [(Tp Ad, i Pr )Sr(2-CH 2 –Py)(2-picoline)] ( 6 ), reductively coupling diphenyl-biquinolide complex [{(Tp Ad, i Pr )Sr} 2 (2,2′-Ph 2 -4,4′-dihydro-4,4′-biquinolide)] ( 7 ), and diphenyl-bipyridyl radical complex [(Tp Ad, i Pr )Sr(6,6′-Ph 2 -2,2′-bipyridyl)] ( 8 ), separately. All of the complexes have been well characterized, including NMR spectrum and single-crystal X-ray analysis.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.4c03296

Authors: Xun Gong, Xianghui Shi, Peng Deng, Jianhua Cheng

Institutions: University of Science and Technology of China, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, State Key Laboratory of Polymer Physics and Chemistry

Language: English

Topic: Synthesis and characterization of novel inorganic/organometallic compounds

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funder: National Natural Science Foundation of China