Arsenic, Antimony, and Bismuth Donor Ligands

Substituted iron carbonyl complexes ineluding Fe(C0)3 As(C6H40Me-/ )3)2 and Fe(C0)4 As(C6H40Me-/ )3) were examined by electrospray mass spectrometry (ESMS). Whereas the related compound Fe(CO 3(AsPh3)2 did not give an ESMS spectrum, the methoxy-substituted compounds did. This was attributed to the presence of protonatable methoxy groups. Both the monosubstituted and disubstituted compounds were observed in a crude 

The reaction of bis(diphenylstibino)methane with Fc2(CO)9 resulted in a complex in which one of the stibine ligands occupied an axial site of Fe(CO)4 group (Equation (91)). A similar reaction involving bis(dimethylstibino)-methane (Equation (92)) or l,3-bis(diphenylstibino)propane (Equation (93)) resulted in a complex with two Fe(CO)4 fragments. 

Mononuclear Iron CartK nyls without Hydrocarbon Ligands 

A heterocyclic complex of iron and antimony was synthesized via insertion of an Fe(CO)4 fragment into a cyclic 

Bismuth chloride forms a simple bis(adduct) 48 with [Fe(CO)4] (Equation (95)). The Lewis-acidic bismuth atoms expand their coordination environments by sharing chloride ions. The bismuth atoms are distorted square pyramids attached to a distorted octahedral iron carbonyl fragment. Calculations on these structures indicated that a substantial charge separation remains in the products. 

---

S. D. Robinson Transition metal complexes containing phosphorus, arsenic, antimony and bismuth donor ligands. 

Phosphorous, Arsenic, Antimony, and Bismuth Donor Ligands 260... 

---