By Didier Astruc (auth.)
This is the 1st booklet at the topic particularly for students.
It covers the elemental and complex features of organometallic chemistry of all metals and comparable catalysis topics.
In order to offer a complete view of the topic, it examines the historic heritage, in addition to suggestions (including buildings of mono- and polymetallic complexes), molecular orbitals, reactivity, implications in biology and functions to natural synthesis and catalysis.
The catalysis part comprises the tough activation and functionalization of the most sessions of hydrocarbons and the industrially an important heterogeneous catalysis.
Chapter-end summaries and routines help self- and crew examine, with ideas integrated on the finish of the book.
Hundreds of chosen references supplement the textual content for extra studying. Readers will discover a chapter-length remedy of eco-friendly chemistry, in addition to many fresh overseas examine effects, that around off this hugely available textbook.
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Additional resources for Organometallic Chemistry and Catalysis
Example text
E. the radicaltype ligands; they are designated as X (one electron) or XLn (odd number of electrons). The L or Ln ligands do not accept valence electrons from the metal to make the metal-ligand bond, because the bond involved is of the donor-acceptor type. On the other hand, the X or XLn ligands require one valence electron from the metal to form the metal-ligand bond. Thus, the M-X bond resembles the covalent bond in organic chemistry as each partner brings one electron to form the bond electron pair.
MoL4Xy+1. NEV = 18 = nMo + 2 nL + nX + q = 6 + (2 4) + y + 1 = 15 + y; thus, y = 3. 78Å in the dimer [Cp(CO)3Mo-Mo(CO)3Cp] which is its precursor. The shortening is indeed very large. 5. QUADRUPLE METAL-METAL BONDS They are provided by the family of d4 metal fragments and lead to quadruply metalmetal bonded dimer having the ()2()4()2 electronic structure. After formation of the quadruple bond, each d4 metal fragment becomes d0 in the dimer. Examples: Me Me Me Me Re Me Me Mo Me Me Counter-cations: 2 Li+ 4– Me Me Re Me Me 2– Mo Me Me Me Me Counter-cations: 4 Li+ Before the quadruple metal-metal bond formation: d4 + d4 In the dinuclear complex: d0 2 – BIMETALLIC TRANSITION-METAL COMPLEXES AND CLUSTERS 53 In the dimer [Re2Cl8]2–, the NVE is 16 if all the Cl are counted as Xligands.
They are Lligands, and as such, they coaxially give a pair of electrons to the metal: this is the bond of a porbital of CO or of a orbital of C2H4 towards a vacant dmetal orbital. It is this bond that is formally taken into account in the characteristics of the complexes. There is another bond that is not considered in the electron count, but which is also very important: it is the lateral backbonding of type from a filled dmetal orbital to a vacant antibonding orbital of CO or C2H4. This bond is in the opposite direction to the bond, as indicated by its name.
