Cu (4-phenylpyridine) 4 (trifluoromethanesulfonate) 2], a Werner complex that exhibits high selectivity for o-xylene. Breadcrumbs UL Home Crystal Engineering Research Adrianna M Kałuża, Soumya Mukherjee, Shi-Qiang Wang, Daniel J O'Hearn, Michael J Zaworotko. Chem Commun (Camb). 2020 Feb 13;56(13):1940-1943. doi: 10.1039/c9cc09525j. 2020 https://www.ncbi.nlm.nih.gov/pubmed/31950945