Niobium pentaiodide is the inorganic compound with the formula Nb2I10. It is a yellow, moisture-sensitive, diamagnetic solid. It forms upon heating metallic niobium with iodine. Its structure has been verified by single crystal X-ray diffraction, which reveals an edge-shared bioctahedral structure, as observed for many pentahalides of Nb and Ta. The bonds to the bridging iodides are 0.3 Å longer than the terminal Nb-I bonds.

CAS：13779-92-5
中文别名：碘化钕;
英文别名：COLUMBIUM PENTAIODIDE;niobium pentaiodide;Niobium(V) iodide;niobium(5+) ion pentaiodide;
分子式：I5Nb
分子量：727.429
精确质量：727.429
Psa：0.0
Logp：4.4285

EINECS号：237-422-1
MDL号：MFCD00016238

熔点：>300ºC(lit.)

安全说明：S22; S26; S27; S36/37/39; S45
危险类别码：R34
危险品运输编码：UN 3260 8/PG 2
包装等级：III
危险品标志：C