title: 1,2-Bis(di-2-pyridylphosphino-yl)ethane.
abstract: The crystal structure of the title compound, C(22)H(20)N(4)O(2)P(2), consists of two independent half-mol-ecules, both of which lie on crystallographic inversion centres. There are no significant differences between the two mol-ecules.
authors.affiliation: Chemistry, School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Western Australia, Australia.
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Berners-Price
authors.forename: Maribel
authors.initials: M
authors.lastname: Navarro
authors.forename: Brian W
authors.initials: BW
authors.lastname: Skelton