title: An unusual case of symmetry-preserving isomerism.
abstract: Two isomeric phases of the NbO-type structure have been discovered: PCN-16 (alpha phase) and PCN-16' (beta phase), and gas sorption studies revealed that the alpha phase possesses a larger surface area, leading to higher hydrogen and methane storage capacity as compared with the beta phase.
authors.affiliation: Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX 77842, USA.
authors.forename: Daofeng
authors.initials: D
authors.lastname: Sun
authors.forename: Shengqian
authors.initials: S
authors.lastname: Ma
authors.forename: Jason M
authors.initials: JM
authors.lastname: Simmons
authors.forename: Jian-Rong
authors.initials: JR
authors.lastname: Li
authors.forename: Daqiang
authors.initials: D
authors.lastname: Yuan
authors.forename: Hong-Cai
authors.initials: HC
authors.lastname: Zhou