Bond lengths acetylacetonate complex

Alkene complexes Alkynyl complexes Ammine complexes Aqueous chemistry Arsine complexes Auranofin Auride ion Aurophilicity Binary compounds Bond lengths acetylacetonate complex alkyls and aryls ammine complexes carboxylates cyanide complexes dialkyl sulphide complexes dithiocarbamates to gold... 

Alkene complexes Ammine complexes Aqueous chemistry Arsine complexes Binary compounds Bipyridyl complexes Bond lengths acetylacetonate alkene complexes alkyl and aryl complexes ammine complexes aqua ion... 

Table 4.50. Comparison bond lengths R, atomic charges Qa, and NRT bond orders 6Ab o/M(acac) complexes (M = Ir, Au) and free acetylacetonate ligand (cf. Figs. 4.86(e) and 4.87(e)) C(m) denotes the central methyne carbon atom...

Among the chelated species, octacoordination is often encountered. The tetrakis-acetylacetonate complex of U(IV) (a-form) and Ce(IV) are isostructural. A two-dimensional X-ray analysis showed a slightly distorted square antiprismatic geometry [109—111) for Ce(acac)4 belonging to space group P2i/c [Ctn] with an average Ce—O (acac) bond length of 2.40 A and an <0—Ce—0 of 72°. The a-form of Th(acac)4 is found to be isomorphous (770) with Ce(acac)4 (Th—0=2.41 A)... 

Anhydrous VO(aca), (aca is acetylacetone) appears to be only five-coordinated in the crystal, with the VOs+ group perpendicular to the oxygen base of a square pyramid. The V-O bond length in this complex is only 1.59 A. 

Structurally, complexes of malonaldehyde and acetylacetonate with Zn(R) ion show very similar Zn—O bond lengths . The cadmium complexes have similar structures but... 

By functioning as Lewis acids, many beryllium compounds attain maximum coordination of the metal atom. Thus the chloride forms etherates, Cl2Be(OR2)2, and complex ions such as BeF and [Be(H20)4]2+ exist. In chelate compounds such as the acetylacetonate, Be(acac)2, four approximately tetrahedral bonds are formed with the C—O and Be—O bond lengths equivalent. 

A second t q)e of 3-carbon-bonded acetylacetonate complex is illustrated by the trimethyl(acetylacetonato)platinum(IV) dimer. Although the X-ray crystal structure analysis has not been carried out for this specific complex, both X-ray and neutron diffraction studies have been done for the analogous trimethyl(nonane-4,6-dionato)platinum(IV) complex (25, 26). This and other similarities suggest that the acetylacetonate complex has the same structure. The structure of the nonane-4,6-dionate complex is illustrated in Fig. IE along with some selected bond lengths. Compounds of this kind have been referred to as bridgebonding complexes by Gibson (23). 

With trivatent metals, acetylacetone thus forms neutral tns complexes such as [Al(acac)3, [Tifacac),], (Crfacac),], and [Cofacac),]. As a result of resonance, the two M—O bonds in each of these complexes are equal in length, as are the two C—O and the two ring C—C bonds, giving a symmetric structure (only one ring shown) ... 

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