Citation: Franck Gascoin; Slavi C. Sevov (2002). Niobium-Arsenic Zintl Phases: A6NbAs5 (A = K, Rb, Cs), K6NbTlAs4, and K8NbPbAs5 with Edge-Bridged Niobium-Centered Tetrahedra of Arsenic, [NbAs4M]n- Where M = As, Tl, Pb. Inorganic Chemistry, 41, pp. 2820-2825.