Equilibria E 4000The Nb-Sb System. -A new version of the Nb-Sb phase diagram is constructed based on XRD results. The existence of the three binary compounds Nb3Sb (Cr3Si-type structure), Nb5Sb4 (Ti5Te4-type) and NbSb2 (OsGe2 structure type) is confirmed, while the compounds Nb3Sb2, NbSb, and Nb4Sb5 are not detected. The structure of Nb5Sb4 is redetermined by single crystal XRD (space group I4/m, Z = 2). -(LOMNYTSKA, Y. F.; KUZ'MA*, Y. B.; J. Alloys Compd. 413 (2006) 1-2, 114-117; Dep. Anal. Chem., Ivan Franko Natl. Univ. L'viv, L'viv 79005, Ukraine; Eng.) -Schramke 21-015