The new low symmetry pyrazole-based tripodal tetraamine ligands 2-(1 H-pyrazol-1-yl)-N, N- bis (1 H-pyrazol-1-ylmethyl) ethanamine (bmpz) and 2-(1 H-pyrazol-1-yl)-N-[2-(1 H-pyrazol- 1-yl) ethyl]-N-(1 H-pyrazol-1-ylmethyl) ethanamine (bepz) have been prepared and characterised, as have metal complexes containing these ligands. X-ray crystal structures of [Co (bmpz) Cl] 2 [CoCl 4]· H 2 O,[Co (bmpz) MeCN](ClO 4) 2· 0.13 H 2 O,[Zn (bmpz) MeCN ...