Alternative syntheses and X-ray diffraction analyses of the parent tricarbaborane compounds [nido-7,8,9-C3B8H11]−, [nido-7,8,10-C3B8H11]− and [1-(η5-C5H5)-closo-1,2,4,10-FeC3B8H11]

► Alternative synthesis of nido tricarbollide anions. ► Alternative synthesis of ferratricarbollide complexes. ► Structure determination of tricarbaboranes.