(a)C:X2Y2(O2H2) b)C…XYZ(ONCl) (c)Civ: XY2(,) 只有 d)Ca: XY,(NH.) (e)Cav: XY(BrFs) ()Cv: XYZ(HCN) c5,8 (g) D4h: XY(PtCI:-) X,Ys(C,H: 4C2, ) Cole (i)Dah: XY,(CH, 60,,i) 59