4,4',4''-nitrilotribenzoic acid

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2) Koh, K.; Wong-Foy, A.; Matzger, A.; J. Am. Chem. Soc., 2010, 132(42), 15005-15010, DOI: 10.1021/ja1065009 ; Coordination Copolymerization Mediated by Zn4O(CO2R)6 Metal Clusters: a Balancing Act between Statistics and Geometry 

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5) Li, C.; Xu, H.; Gao, J.; Du, W.; Shangguan, L.; Zhang, X.; Lin, R.; Wu, H.; Zhou, W.; Liu, X.; Yao, J.; Chen, B.;  J. Am. Chem. Soc., 2019, 7(19), 11928-11933, DOI: 10.1039/c9ta01942a