TY - JOUR T1 - Contributions to the History of the Phosphorus-Bases. Second Memoir. Theory of Diatomic Bases. Diphosphonium-Compounds JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 150 SP - 449 EP - 496 PY - 1860/01/01/ UR - http://dx.doi.org/10.1098/rstl.1860.0024 M3 - doi:10.1098/rstl.1860.0024 AU - Hofmann, A. ER -