Selective lithiation and crystal structures of G1-carbosilane dendrimers with dimethoxybenzene functionalities

Harder, Sjoerd; Meijboom, Reinout; Moss, John R.

doi:10.1016/j.jorganchem.2003.12.047

Cited by 8 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From our interest in organometallic dendrimers (Meijboom et al, 2003;Harder et al, 2004;Overett et al, 2005;Blom et al, 2005), we decided to synthesize the well known poly-propylene amine dendrimers (De Brabander-van den Berg & Meijer;1994).…”

Section: S1 Commentmentioning

confidence: 99%

[Butane-1,4-diylbis(nitrilodiethylidene)]tetraacetonitrile

Meijboom¹

2007

Acta Cryst E

Self Cite

View full text Add to dashboard Cite

show abstract

Section: S1 Commentmentioning

confidence: 99%

[Butane-1,4-diylbis(nitrilodiethylidene)]tetraacetonitrile

Meijboom¹

2007

Acta Cryst E

Self Cite

View full text Add to dashboard Cite

show abstract

“…Indeed, the majority of dendritic molecules have low or no tendency to form crystals. There are only a few papers reporting single-crystal X-ray analysis of some dendritic structures of first (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28) and second (29)(30)(31)(32)(33)(34) generations. Although these results are highly interesting, there is still the lack of a premeditated structural study of dendritic molecules, which might shed some light on the factors controlling self-assembly of these flexible architectures.…”

mentioning

confidence: 99%

Engineering crystals of dendritic molecules

Lukin

Schubert

Müller

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

A detailed single-crystal X-ray study of conformationally flexible sulfonimide-based dendritic molecules with systematically varied molecular architectures was undertaken. Thirteen crystal structures reported in this work include 9 structures of the secondgeneration dendritic sulfonimides decorated with different aryl groups, 2 compounds bearing branches of both second and first generation, and 2 representatives of the first generation. Analysis of the packing patterns of 9 compounds bearing second-generation branches shows that despite their lack of strong directive functional groups there is a repeatedly reproduced intermolecular interaction mode consisting in an anchor-type packing of complementary second-generation branches of neighbouring molecules. The observed interaction tolerates a wide range of substituents in meta-and para-positions of the peripheral arylsulfonyl rings. Quantum chemical calculations of the molecule-molecule interaction energies agree at the qualitative level with the packing preferences found in the crystalline state. The calculations can therefore be used as a tool to rationalize and predict molecular structures with commensurate and non-commensurate branches for programming of different packing modes in crystal.dendrimers ͉ single-crystal X-ray ͉ sulfonimides ͉ supramolecular chemistry R evealing the interplay of noncovalent forces that direct processes of self-assembly and self-organization has been objective of numerous studies (1-4). This is central for the design and then the targeted synthesis of molecules capable of assembling into predefined supramolecular structures of practical significance. Although there are many examples in which the knowledge about the noncovalent interactions helped to arrive at predetermined complex molecular architectures (5, 6), the serendipity contributes to a large extent to supramolecular design. Once a new fascinating supramolecular structure is discovered, it is often difficult to decode the underlying principles of its assembly. In this context the crystallization of organic molecules is a specifically complicated case that remains poorly understood. Although it is now often possible with the aid of computations to predict a most favorable intermolecular interaction between molecules there is no guarantee that this particular intermolecular contact will be found in the crystal structure. Attempts at the rational design of organic crystals evolved into a nowadays well-established field of crystal engineering (7-11) that aims at general rules for crystal structure control. For the time being the field of crystal engineering has generated some knowledge that often helps to design organic crystals with desired properties. The main recipe is to use so-called ''tectons'' (12), which are small molecules with welldefined shape and strong directive functional groups, such as hydrogen-bonding units and metal-coordinating sites (13,14). In case reproducible trends in crystal packing for a given group of compounds are observed the molecules are usually sy...

show abstract

Carbosilane Dendrimers

Roovers¹,

Ding²

Advances in Silicon Science

View full text Add to dashboard Cite

Selective lithiation and crystal structures of G1-carbosilane dendrimers with dimethoxybenzene functionalities

Cited by 8 publications

References 43 publications

[Butane-1,4-diylbis(nitrilodiethylidene)]tetraacetonitrile

[Butane-1,4-diylbis(nitrilodiethylidene)]tetraacetonitrile

Engineering crystals of dendritic molecules

Carbosilane Dendrimers

Contact Info

Product

Resources

About