supported by the National Natural Science Foundation of China(Nos.22425107,92461303,22371140,and 92161102(Z.-M.S.))and(No.22301143(L.Q.)).
The reactions of K_(5)Pn_(4)(Pn=Sb and Bi)and CpRh(PPh_(3))_(2)(Cp=C_(5)H_(5),cyclopentadiene)in ethylenediamine(en)solutions resulted in a series of new Pn_(7)^(3−)−adducts,{Pn_(8)[Rh(PPh_(3))]_(2)}^(2−),{Sb_(7)[Rh(P...