Bismuth transition metal complex

The complex [Ph2BiMn(CO)5] was synthesized by Whitmire and Cassidy " as a candidate single-source precursor for the alloy MnBi, which has interesting magnetic properties. Unfortunately no thermolysis data were presented. Some bismuth-transition metal complexes are surprisingly stable, e.g. " . 

Although trialkyl- and triarylbismuthines are much weaker donors than the corresponding phosphoms, arsenic, and antimony compounds, they have nevertheless been employed to a considerable extent as ligands in transition metal complexes. The metals coordinated to the bismuth in these complexes include chromium (72—77), cobalt (78,79), iridium (80), iron (77,81,82), manganese (83,84), molybdenum (72,75—77,85—89), nickel (75,79,90,91), niobium (92), rhodium (93,94), silver (95—97), tungsten (72,75—77,87,89), uranium (98), and vanadium (99). The coordination compounds formed from tertiary bismuthines are less stable than those formed from tertiary phosphines, arsines, or stibines. 

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

Compounds Containing Transition Metal Main Group Elements) Transition metal complexes which incorporate organobismuth functions are also described in (see Bismuth Organometallic Chemistry). 

The lowest oxidation state, -3, having a ns np electron configuration, is found in transition metal complexes of ligand-free Pn anions. When a single Pn ion is attached to a metal, they are collectively referred to as pnictido ligands and form terminal metal-pnictogen triple bonds, which are known for all group 15 elements except bismuth. ... 

Concerning ligands of organoarsenic, -antimony and -bismuth compounds in main group and transition metal complexes, some contributions are cited in the list of references . Thus we fixed our attention to the literature within the last ten years to deal with topics of current interest. 

This has been one of the useful methods for the preparation of transition metal complexes. Organoantimony and -bismuth anions have also been utilized for the preparation. Several transition metal bonded compounds with vanadium and copper as the transition metal are shown in equations 145 and 146 . ... 

A125. F. G. Mann, Chemistry of Heterocyclic Compounds, Vol. 1 Heterocyclic Derivatives of Phosphorus, Arsenic, Antimony and Bismuth, 2nd ed. Wiley (Interscience), New York, 1970. A much shorter first edition was published in 1950. A126. C. A. McAuliffe, ed., Transition Metal Complexes of Phosphorus, Arsenic and Antimony ligands. Macmillan, New York, 1973. 

The criterion for compounds to be included in this chapter is not strictly limited to organic bismuth compounds. Some relevant inorganic bismuth compounds are included, which may be of interest to organic chemists. Transition metal complexes are not included. 

Transition Metal Complexes Related to the Simon test is a family of color-producing reactions based on transition metal complexes (coordination complexes) and tightly associated ion pairs. Coordination complexes arise from a Lewis acid-base interaction between a metal cation, such as cobalt, and an atom with unshared electrons, such as water or, in the case of drugs, basic nitrogen found in alkaloids and amines. Metals that have been used in these reagents include copper, vanadium, bismuth, and cobalt Cobalt, as part of two common reagents (cobalt thiocyanate and Dilli-Koppanyi) is perhaps the most versatile. Cobalt has an electron structure of 3d 4s, while ttie cation has a 3d (2 ) or 3d (3 ") structure. 

Thurston J.H., Whitmire K.H. Heterobimetalhc bismuth-transition metal salicylate complexes as molecular precursors for ferroelectric materials. Synthesis and structure of Bi2M2(sal)4(Hsal)4(OR)4 (M = Nb, Ta R = CH2CH3, CH(CH3)2>, Bi2Ti3(sal)g(Hsal)2, and Bi2Ti4(0 Pr)(sal)io(Hsal) (sal = O2CC6H4-2-O Hsal = O2CC6H4-2-OH). Inorg. Chem. 2002 41 4194... 

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