| Abstract: The reaction of Fe3(CO)12with two cyclic dithiophosphinate SP(S)(C6H4OR)N(C6H5)NC(Me )(R =Me,Et ),yields two novel dinuclear iron carbonyl clusters contining a phosphi do-thiolato bridging μ-η2-SCNNP ligand Fe2(CO)6[μ-η2-SC(Me )NN(C6 H5)P(C6H4 OMe )](Ⅰ),Fe2(CO)6[μ-η2-SC(Me)NN(C6H5)P(C6H4OEt)](Ⅱ) and cluster Fe3(CO)9(μ3-S)2(known).We suggest that during the reaction ,the ligand precursor has been cleaved in its P =Sand P-Sbonds and opened its ring to give the fragments as ligands μ3-S,μ-η2-SC(Me)NN(C6H5)P(C6H4OR)that coordinated to the iron atoms of the decarbonyl fragmental Fe3(CO)12to form the clusters as listed above.The clusters were characterized by elemental analysis,IR,1H NMR and Ms spectrometric methods ,and the molecular structure of cluster?has been determined by X-ray diffrac tion method,it belongs to monoclini c with space group P2(1)/n,a=11.192(2)Å,b=14.272(3)Å,c=16.281(3)Å,V=2470.2(8)Å3,β=108.22(3)°,Dc=1.565g·cm-3,Z =4,F(000)=1176,R=0.0460,Rw=0.1196.The din-uclear cluster has two bridges Fe-S-Fe and Fe-P-Fe,and the chain C (7)-N(2)-N(1)link the sul-phur atom and the phosphorus atom ,th at contains two six-membered chelate rings Fe(1)SCNNP and Fe(2)PNNCS in the cluster,they enhanced t he stability of the cluster. |
