... > chemical entity > molecular entity > inorganic molecular entity > inorganic hydride > boron hydride > boranes > pentaborane(9)

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydrides > inorganic hydride > boron hydride > boranes > pentaborane(9)

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydrides > inorganic hydride > boron hydride > boranes > pentaborane(9)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > boron group molecular entity > boron molecular entity > boron hydride > boranes > pentaborane(9)

... > chemical entity > molecular entity > polyatomic entity > cluster > homonuclear cluster > polyboron cluster > polyboron hydride > pentaborane(9)

... > chemical entity > molecular entity > inorganic molecular entity > inorganic hydride > boron hydride > polyboron hydride > pentaborane(9)

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydrides > inorganic hydride > boron hydride > polyboron hydride > pentaborane(9)

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydrides > inorganic hydride > boron hydride > polyboron hydride > pentaborane(9)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > boron group molecular entity > boron molecular entity > boron hydride > polyboron hydride > pentaborane(9)