Multicomponent BaMio(2)O(7) single-crystalline nanowire bundles were synthesized by a hydrothermal crystallization process under mild conditions using cheap and simple bulky oxide and fluoride as precursors. This new strategy has been extended to prepare other ID molybdenum oxide-based nanomaterials including alkaline earth metal molybdate compounds (such as BaMo3O10), transition-metal molybdate compounds (e.g., CdMoO4, PbMoO4, Ag6Mo10O33, etc.) and metal molybdenum oxide fluoride compounds (e.g., Ba2MoO3F4). Our experiments have also proved that this facile hydrothermal route is a general method for the synthesis of various multicomponent nanomaterials (such as tungstate, chromate, phosphate compounds).