Novel N-bridging cyclopentadienyl heteropolynuclear organometallamacrocycles with M-Sn (MÂ =Â Mo or W) bonds

Reaction of [PhN(CH2COCpM(CO)3)2]2− (M = Mo or W) with Ph2SnX2 yields tetranuclear heterodimetallic complexes PhN(CH2COCpM(CO)3SnPh2X)2 (X = Cl or Br), while with CH2(SnPh2Br)2 results in octanuclear heterodimetallic organometallamacrocycles [PhN(CH2COCpM(CO)3)2]2[(SnPh2)2CH2]2.