the complexes tris ( 1,10-phenanthroline ) ruthenium ( ii ) , ru ( phen ) 3 ( 2+ ) , tris ( 4,7-diphenyl-1,10-phenanthroline ) ruthenium ( ii ) , ru ( dip ) 3 ( 2+ ) , and tris ( 4,7-diphenyl-1,10-phenanthroline ) cobalt ( iii ) , co ( dip ) 3 ( 3+ ) , in general , bind stereoselectively to dna helices , with enantiomers possessing the delta configuration bound preferentially by right-handed b-dna .
C0012854
dna
C0919262
right-handed