Synthesis, characterisation and molecular structure of stannyl derivatives of molybdenum and iron

In this paper, we have determined the crystal structure of [Mo(CO)3(Cp)SnCl3] (1) and used [{Fe(CO)2Cp}SnCl2] (2) to prepare two new Fe–Sn containing compounds [{Fe(CO)2Cp}Sn(PDC)] (3), where PDC=2,6-pyridinedicarboxylate and [{Fe(CO)2Cp}Sn(SPy)2] (4). All compounds were fully characterised by multinuclear NMR [1H, 13C{1H} and 119Sn{1H}] and 119Sn [(2)–(4)] and 57Fe-Mössbauer spectroscopies. In addition, the structure of (1) and (3) was determined by X-ray crystallographic studies, which can be summarised as follows: (1) triclinic, P-1, a=7.66700(10), b=8.6000(2), c=11.3550(2) Å, α=92.8630(10)°, β=106.5030(10)° and γ=109.4020(10)°, V=668.42(2) Å3 and Z=2. (3) Monoclinic, P-21/c, a=7.6586(4) Å, b=14.4866(8) Å, c=20.1209(8) Å; β=101.690(3)°, 2186.05(19) Å3 and Z=4.