Group 15 elements complexes

Fission of the Sb-Sb bond is even more facile in the distibine-group 13 element complexes and with migration of an alkyl group four- and six-membered heterocycles (type 7 and 8) are formed.76,82... 

Reactions of Transition Metal-Group 13 Element Complexes with... 

The iron carbonyl complexes are most easily obtained via reaction of a suitable salt of [Fe(CO)4] and an appropriate dihalo-group 13 element complex X2ER, but reaction of a neutral iron carbonyl compound with (RE) may also be used. The syntheses of the known Fe(CO)4 compounds arc presented in Equations (11)-(14). The R group attached to E can also be a donor ligand such as tris(pyrazolyl)borate (Equation (14)). ... 

Many transition metal complexes bearing dithiocarboxylato ligands have been studied from various points of view. Their coordination modes depend on the metals and the other ligands on the metals. The complexes sometimes show interesting properties, such as electron conductivity. Synthetic methods are usually as same as those of the main-group-element complexes bearing dithiocarboxylato ligands. The insertion of carbon disulfide into the metal-carbon bond is especially used in the synthesis of transition metal complexes. 

The bullqriminophosphonamide ligand, [2,6-fPr2C6H3N)P(Ph)2(NtBu)]H (33) and its lithium derivative were used for the preparation of group 13 main-group element complexes by elimination of alkane/hydrogen or the... 

Bonding and Structural Considerations of Carbene-Main Group Element Complexes... 

Many transition metal complexes including Ni(CO)4 obey the 18 electron rule, which IS to transition metal complexes as the octet rule is to mam group elements like carbon and oxygen It states that... 

The hydrides of the later main-group elements present few problems of classification and are best discussed during the detailed treatment of the individual elements. Many of these hydrides are covalent, molecular species, though association via H bonding sometimes occurs, as already noted (p. 53). Catenation flourishes in Group 14 and the complexities of the boron hydrides merit special attention (p. 151). The hydrides of aluminium, gallium, zinc (and beryllium) tend to be more extensively associated via M-H-M bonds, but their characterization and detailed structural elucidation has proved extremely difficult. 

Complexes According to Element (Main Group Elements) 3... 

Phosphorus, arsenic and antimony complexes of the main group elements. W. Levason and C. A. McAuliffe, Coord. Chem. Rev., 1976,19,173-185 (88). 

It is then shown that (excepting the rare-earth ions) the magnetic moment of a non-linear molecule or complex ion is determined by the number of unpaired electrons, being equal to ms = 2 /S(S + 1), in which 5 is half that number. This makes it possible to determine from magnetic data which eigenfunctions are involved in bond formation, and so to decide between electron-pair bonds and ionic or ion-dipole bonds for various complexes. It is found that the transition-group elements almost without exception form electron-pair bonds with CN, ionic bonds with F, and ion-dipole bonds with H2O with other groups the bond type varies. 

Reactions of metal halides with polysulfide dianions are useful methods for the synthesis of polysulfido complexes of main group elements and transition metals. In most of these reactions, similarly to other methods, the chain lengths and coordination types of the polysulfide ligands depend on the other ligands coordinated to the metal, on the ratio between the metal and sulfur, on the reaction temperature, and other parameters. 

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