The screw propeller-like cluster complex [Mn(3)(OMe)(L(Schiff))(3)(H(2)O)Cl(2)].2H(2)O {H(2)L(Schiff) = 2-[(E)-(R)-1-hydroxypropan-2-ylimino]methyl-6-methoxyphenol} is the first chiral triangle manganese cluster compound. It is also a rare nonsymmetrical triangle compound with an unequilateral arrangement of three manganese(iii) atoms. Both ferromagnetic and antiferromagnetic interactions exist between the Mn(3+) ions, exhibiting a magnetic anisotropy.