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Fricker AE, Samolova E, Rheingold AL, Green DB, Brereton KR, Fritsch JM. Synthesis, spectroscopy, and crystallography of magnesium, aluminum, and zinc complexes supported by a tridentate ketoiminate. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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McCollum AM, Longo AM, Stahl AE, Butler AS, Rheingold AL, Cundari TR, Green DB, Brereton KR, Fritsch JM. Synthesis, spectroscopy, and crystallography of mononuclear, five-coordinate aluminum complexes that act as cyclic ester polymerization initiators. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Marlier EE, Seong CM, Brunclik SA, Nevins MH, Nolan EL, Olson AK, Osnaya M, Reuter A, Swanson ME, Wood OG, Janzen DE. Synthesis and structures of a family of hybrid donor N2P2 beta-diketiminate zinc complexes. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Schmitz LA, McCollum AM, Rheingold AL, Green DB, Fritsch JM. Synthesis and structures of aluminum ion-pair complexes that act as L- and racemic-lactide ring opening polymerization initiators. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Xu J, Zheng W, Huang X, Cheng Y, Shen P. Selective fluorescent probe based on Schiff base derived from hydroxymethyl coumarin and aminated Sudan I dye for Mg2+ detection. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Zinc complexes chelated by bifunctional ketiminate ligands: Structure, reactivity and possible applications in initiation of ROP and copolymerization of epoxides with carbon dioxide. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Gerling KA, Rezayee NM, Rheingold AL, Green DB, Fritsch JM. Synthesis and structures of bis-ligated zinc complexes supported by tridentate ketoimines that initiate L-lactide polymerization. Dalton Trans 2014; 43:16498-508. [PMID: 25256407 DOI: 10.1039/c4dt01607f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Eight bis-ligated, homoleptic, zinc complexes were synthesized through the reaction of NNO Schiff base ketoimines bearing varying substituents with diethyl zinc in an inert atmosphere glovebox at room temperature and isolated in 62-95% yield. The complexes were characterized with (1)H, (13)C, and (19)F nuclear magnetic resonance spectroscopy, absorbance spectroscopy, high resolution mass spectrometry, elemental analysis, and single crystal X-ray crystallography. The complexes were shown to adopt distorted octahedral coordination geometry around zinc. The (1)H and (19)F NMR spectra of complexes 1-7 showed stable zinc coordination at 300 K while the effect of steric encumbrance and two trifluoromethyl groups in complex 8 was investigated with variable temperature NMR. The bis-ligated zinc complexes were effective initiators for the ring opening polymerization of L-lactide into poly-L-lactic acid (PLLA). With [L-lac]/[Zn complex] = 50, the bis-ligated zinc complexes yielded percentage conversion of 14-98% with polymerization times varying from 15-1440 min, where the longest reaction times were required when two trifluoromethyl groups were present. The addition of 4-fluorophenol co-catalyst resulted in up to a 5-fold increase in the percentage conversion in toluene solution and up to a 14-fold increase in bulk melt polymerization with reductions in the poly-dispersity index values for the isolated PLLA. Addition of 4-fluorophenol to complex 1 was studied with (1)H and (19)F NMR and appeared to yield an in situ generated zinc alkoxide complex.
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Affiliation(s)
- Kimberly A Gerling
- Department of Chemistry, Pepperdine University, 24255 Pacific Coast Highway, Malibu, CA 90263, USA.
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Scheiper C, Dittrich D, Wölper C, Bläser D, Roll J, Schulz S. Synthesis, Structure, and Catalytic Activity of Tridentate, Base-Functionalized β-Ketiminate Zinc Complexes in Ring-Opening Polymerization of Lactide. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301462] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Liu Z, Chen HX, Huang D, Zhang Y, Yao YM. A facile route to lithium complexes supported by β-ketoiminate ligands and their reactivity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhang N, Fan YH, Bi CF, Zuo J, Zhang PF, Zhang ZY, Zhu Z. Synthesis, crystal structure, and DNA interaction of magnesium(II) complexes with Schiff bases. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.796039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Nan Zhang
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Yu-Hua Fan
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Cai-Feng Bi
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Jian Zuo
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Peng-Fei Zhang
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Zhong-Yu Zhang
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
| | - Zheng Zhu
- a Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education , College of Chemistry and Chemical Engineering, Ocean University of China , Qingdao , China
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Gallei M, Rangou S, Filiz V, Buhr K, Bolmer S, Abetz C, Abetz V. The Influence of Magnesium Acetate on the Structure Formation of Polystyrene-block
-poly(4-vinylpyridine)-Based Integral-Asymmetric Membranes. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201200708] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Saadeh SM. Synthesis and characterization of new NNO ligands and some metal(II) complexes: crystal structures of (BBH)2Co and (BIH)2Ni. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.709627] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Salman M. Saadeh
- a Chemistry Department, Faculty of Science , Islamic University of Gaza , PO Box 108, Gaza , Palestine
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Roberts CC, Barnett BR, Green DB, Fritsch JM. Synthesis and Structures of Tridentate Ketoiminate Zinc Complexes That Act As l-Lactide Ring-Opening Polymerization Catalysts. Organometallics 2012. [DOI: 10.1021/om200865w] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Courtney C. Roberts
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - Brandon R. Barnett
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - David B. Green
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
| | - Joseph M. Fritsch
- Department of Chemistry, Pepperdine University, Malibu, California 90263, United States
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