A multiply-substituted buckminsterfullerene (C60) with an octahedral array of platinum atoms

Fagan, Paul J.; Calabrese, Joseph C.; Malone, Brian S.

doi:10.1021/ja00024a079

Cited by 274 publications

(113 citation statements)

References 4 publications

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“…Thus, a main issue is to estimate how many Ti atoms can be attached to the fullerenic cage without being close to each other enough to allow the formation of clusters. In the case of Pt and Ir atoms, there exist previous reports of the synthesis of hexa-coordinated compounds, and it has been found that once that six Pt atoms are bound to the fullerenic cage, it is not possible the addition of more atoms (Fajan et al 1991(Fajan et al , 1992Bach et al 1991).…”

Section: Introductionmentioning

confidence: 99%

On the structure and normal modes of hydrogenated Ti-fullerene compounds

2012

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When titanium covers a C 60 core, the metal atoms may suppress the fullerene's capacity of storing hydrogen, depending on the number of Ti atoms covering the C 60 framework, the Ti-C binding energy, and diffusion barriers. In this article, we study the structural and vibrational properties of the C 60 TiH n (n = 2, 4, 6, and 8) and C 60 Ti 6 H 48 compounds. The IR spectra of C 60 TiH n compounds have a maximum attributable to the Ti-H stretching mode, which shifts to lower values in the structures with n = 4, 8, while their Raman spectra show two peaks corresponding to the stretching modes of H 2 molecules at apical and azimuthal positions. On the other hand, the IR spectrum of C 60 Ti 6 H 48 shows an intense peak due to the Ti-H in-phase stretching mode, while its Raman spectrum has a maximum attributed to the pentagonal pinch of the C 60 core. Finally, we have found that the presence of one apical H 2 molecule enhances the pentagonal pinch mode, becoming the maximum in the Raman spectrum.

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Section: Introductionmentioning

confidence: 99%

On the structure and normal modes of hydrogenated Ti-fullerene compounds

2012

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“…[7] By reacting fullerene with an excess of (Et 2 P) 4 M (1) (Scheme 1; M ϭ Pt, Pd, Ni), they obtained metal complexes of general formula [(Et 2 P) 2 M] 6 C 60 (2). [7Ϫ9] Thermodynamic control of the reaction resulted in pronounced regioselectivity, and so the highly symmetrical hexakisadducts were formed in high yields.…”

Section: Introductionmentioning

confidence: 99%

C60 Hexakisadducts with an Octahedral Addition Pattern − A New Structure Motif in Organic Chemistry

2001

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“…[9][10][11] There are very few reports of crystalline fullerene-metal-coordinated extended structures. [12][13][14][15] Furthermore,n one of these studies explore the concept demonstrated herein, which tackles the development of an ovel crystalline metal-donor-acceptor framework, in which control of the mutual orientation of the donor and fullerenebased acceptor was achieved through chemical bond formation, that is,m etal coordination. Despite the tremendous interest in self-assemblies (in particular,c oordination polymers such as covalent or metal-organic frameworks;COFs or MOFs) [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and fullerene chemistry,t ot he best of our knowledge the prepared metal-organic fullerene-containing framework is the first example of ac rystalline hybridextended structure,inw hich control over mutual orientation of both donor and fullerene-based acceptor is achieved through metal coordination (Scheme 1).…”

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confidence: 99%

Fulleretic Well‐Defined Scaffolds: Donor–Fullerene Alignment Through Metal Coordination and Its Effect on Photophysics

et al. 2016

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Herein, we report the first example of ac rystalline metal-donor-fullerene framework, in which control of the donor-fullerene mutual orientation was achieved through chemical bond formation, in particular,bymetal coordination. The 13 Cc ross-polarization magic-angle spinning NMR spectroscopy, X-rayd iffraction, and time-resolved fluorescence spectroscopyw ere performed for comprehensive structural analysis and energy-transfer (ET) studies of the fulleretic donor-acceptor scaffold. Furthermore,i nc ombination with photoluminescence measurements,t he theoretical calculations of the spectral overlap function, Fçrster radius,e xcitation energies,a nd band structure were employed to elucidate the photophysical and ET processes in the prepared fulleretic material. We envision that the well-defined fulleretic donoracceptor materials could contribute not only to the basic science of fullerene chemistry but would also be used towards effective development of organic photovoltaics and molecular electronics.The success of fullerenes and their derivatives in engineering organic photovoltaics and molecular electronics is mainly owed to their electron-accepting properties and ultrafast electron/energy transfer. [1,2] As previously demonstrated, fullerene(acceptor)-donor alignment could significantly affect excitonic device performance.F or instance,t he arrangement of the donor fullerene is crucial for efficient energy/charge transfer, because of possible effects on the distance of exciton diffusion, p-p stacking, or Fçrster radius (resonance energy transfer). As ar esult, formation of fullerene stacks led to an enhancement of solar cell efficiency,in contrast to non-stacking fullerene derivatives. [3] There are few known reports of spatial organization of graphitic crystalline materials through the covalent linkage of fullerene derivatives. [4][5][6][7][8] Moreover,the known approaches for fulleretic material organization are mainly based on immobilization of the fullerenes inside porous matrices possessing alarge aperture. [9][10][11] There are very few reports of crystalline fullerene-metal-coordinated extended structures. [12][13][14][15] Furthermore,n one of these studies explore the concept demonstrated herein, which tackles the development of an ovel crystalline metal-donor-acceptor framework, in which control of the mutual orientation of the donor and fullerenebased acceptor was achieved through chemical bond formation, that is,m etal coordination. Despite the tremendous interest in self-assemblies (in particular,c oordination polymers such as covalent or metal-organic frameworks;COFs or MOFs) [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and fullerene chemistry,t ot he best of our knowledge the prepared metal-organic fullerene-containing framework is the first example of ac rystalline hybridextended structure,inw hich control over mutual orientation of both donor and fullerene-based acceptor is achieved through metal coordination (Scheme 1). Scheme 1. As chematic representation of organizatio...

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A multiply-substituted buckminsterfullerene (C60) with an octahedral array of platinum atoms

Cited by 274 publications

References 4 publications

On the structure and normal modes of hydrogenated Ti-fullerene compounds

On the structure and normal modes of hydrogenated Ti-fullerene compounds

C60 Hexakisadducts with an Octahedral Addition Pattern − A New Structure Motif in Organic Chemistry

Fulleretic Well‐Defined Scaffolds: Donor–Fullerene Alignment Through Metal Coordination and Its Effect on Photophysics

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