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Volumn 14, Issue 1, 2011, Pages 189-193

Synthesis, characterization, and MMA polymerization activity of tetrahedral Co (II) complex bearing N, N-bis(1-pyrazolyl)methyl ligand based on aniline moiety

Author keywords

Methyl methacrylate; N N bis(1 H Pyrazole 1 yl); PMMA; Tetrahedral Co (II) complex

Indexed keywords


EID: 78651342304     PISSN: 13877003     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.inoche.2010.10.019     Document Type: Article
Times cited : (41)

References (64)
  • 50
    • 78651325407 scopus 로고    scopus 로고
    • note
    • -1): 1453 (w), 1405 (m), 1321 (w), 1302 (m), 1250 (m), 1206 (w), 1190 (m),1169 (s), 1158 (m), 1100 (w), 1083 (w), 1064 (s), 991 (w), 975 (m), 941 (w), 921 (w), 907 (w), 878 (w), 847 (m), 815 (w), 765 (s), 735 (s), 687 (w), 675 (w), 644 (m), 608 (s), 588 (s), 555 (s).
  • 51
    • 78651307435 scopus 로고    scopus 로고
    • note
    • 2 = 0.1681.
  • 64
    • 78651308715 scopus 로고    scopus 로고
    • note
    • Representative polymerization procedure of MMA: Methyl methacrylate (MMA) was extracted with 10% sodium hydroxide, washed with water, dried over magnesium sulfate, and distilled over calcium hydride under reduced pressure before use. To a 100-mL Schlenk flask containing [bpmaL]CoCl2 (5.8 mg, 15.0 μmol) in toluene (1 mL) was added MMAO (modified methylaluminoxane, 6.9 wt% in toluene, 3.25 mL, [MMAO]0/[Catalyst]0 = 500) under a dry argon atmosphere. After the mixture had been stirred at room temperature for 10 min, it was transferred into MMA (5.0 mL, 47.0 mmol, [MMA]0/[Co (II) catalyst]0 = 3100). Then, the reaction flask was immersed in an oil bath at 60 °C and stirred for 2 h. The resulting polymer was precipitated in methanol (400 mL) and HCl (3 mL) was added with stirring for 10 min. The polymer was filtered and washed with methanol (400 mL × 3) to give PMMA, which was vacuum-dried at 60 °C. Additionally, polymerization was examined at different temperatures (0 °C, 25 °C, 40 °C, 50 °C) with 4a.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.