Determination of the Chirality of Optically Active Porphine Type Nickel Complexes The chirality of (+)-[1-methyl-8 H-HDP]nickelperchlorate ( 4) was determined to be (1 R) by X-ray analysis of 7a combined with chemical correlation of the chirality at C(1′) of the 1′-methyl-2′-oxopropoxy side chain of 7a with (−)-( R)-2-methyl-2,3-butandiol ( 9).