Nonanuclear cluster

Figure 3.2 Core structures of nonanuclear (a, b, c), decanuclear (d) and undecanuclear (e) gold clusters.

Figure 2.43 (a) [Lns] clusters, hydrogen atoms have been removed for clarity (b) view of the cluster where ligands have been removed for clarity [77]. (Reproduced from S. Petit, F. Baril-Robert, G. Pilet, C. Reber and D. Luneau, Luminescence spectroscopy of europium(III) and terbium(III) penta-, octa-and nonanuclear clusters with fS-diketonate ligands, Dalton Transactions, 34, 6809-6815, 2009, by permission of the Royal Society of Chemistry.)... 

Petit, S., Baril-Robert, F., Pilet, G, etal (2009) Luminescence spectroscopy of europium(lll) and terbium(lll) penta-, octa- and nonanuclear clusters widi -diketonate ligands. Dalton Transactions, 6809—6815. 

Figure 6.36 Crystal structure of [Ln9( X4-OH)2( X3-OH)s(acac)i6], a nonanuclear cationic complex [25], (Reproduced from Z.R Zheng, Cluster compounds of the f-elements, in K.A. Gschneidner, Jr., J.C.G. Bilnzli, and V.K. Pecharsky (eds.). Handbook on the Physics and Chemistry of Rare Earths, volume 40, 2010, with permission from Elsevier.)...

Addamo, M., Bombieti, G, Foresti, E., Grillone, M.D., and Volpe, M. (2004) Assembling process of charged nonanuclear cationic lanthanide(lll) clusters assisted by dichromium decacarbonyl hydride. Inorganic Chemistry, 43, 1603—1605. 

Not all substituted acac type complexes have simple structures. A nonanuclear clusters involving yttrium and the bidentate ligand allyl acetoacetate [MeC(0)CHC(0)0CH2=CH2] has been... 

FIGURE no Crystal structure of a nonanuclear samarium hydroxide cluster supported by acac ligands (redrawn after Addamo et al., 2004). 

The formally modular assembly of these clusters of different nuclear-ity is rather intriguing. The structural relationship between the penta-nuclear, nonanuclear, and tetradecanuclear species can be clearly appreciated from Figure 112. 

FIGURE 112 Structures of pentanuclear, nonanuclear, and tetradecanuclear cluster cores showing formal modular build-up of their assemblies. 

Figure 24. A view of the structure of Kn Vi50(P04)i8 parallel to the crystallographic a axis (a). The nonanuclear vanadium cluster embedded in the structure (b).

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