Crystal structure of ferrocenyl amine

Perrine, Cyn­thia L.; Zeller, Mat­thias; Hunter, Allen D.

doi:10.1007/s10870-005-6268-4

Cited by 8 publications

(6 citation statements)

References 12 publications

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“…Thus, magnetic anisotropy is not at the origin of this splitting. Furthermore, from the electronic and geometric structures of the ferrocene molecule [28,29] and from the arrangement of aminoferrocene molecules within the nanocluster (Figure 1A), there is no direct chemical coordination between neighboring Fe ions, suggesting that the bond-mediated interactions between Fe ions are weak to explain the properties generated at T ≲ 15 K. Therefore, the splitting originates from magnetic dipole interactions between Fe ions densely arranged within a nanocluster.…”

Section: Resultsmentioning

confidence: 99%

Weakly Interacting Molecular Spins in On‐Surface Synthesized Nanoclusters on a Graphene Oxide Nanosheet

Sakurai

Ueta

Joachim

2023

Adv Elect Materials

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With an average diameter of ≈2 nm, on‐surface synthesized amino‐ferrocene nanoclusters are chemisorbed onto a graphene oxide nanosheet, where their Fe ions are in an S = 5/2 high‐spin state. In this two‐dimensional (2D) nanomaterial, the molecular spins in a given nanocluster are weakly magnetic dipole interacting. It generates spin correlations and slow dynamics accessible by magnetic susceptibility and Mössbauer spectroscopy at a temperature where the magnetic anisotropy is negligible. Magnetic simulations show that minimizing their magnetic dipole energies produces spatially entangled structures of the spin orientations under thermal fluctuations at T ≲ 15 K and that the structures behave like a spin liquid. The competition between the formation of the structures and their thermal destruction generates slow dynamics. The ability to create emergent functionalities from dense stacks of weakly interacting magnetic molecules in a 2 nm space paves the way for new designs of an ultra‐compact building block and a functional component in 2D spintronic and neuromorphic devices.

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Section: Resultsmentioning

confidence: 99%

Weakly Interacting Molecular Spins in On‐Surface Synthesized Nanoclusters on a Graphene Oxide Nanosheet

Sakurai

Ueta

Joachim

2023

Adv Elect Materials

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“…The arrangements of aminoferrocene within the singledomain nanoclusters (Figure 2e) is completely different from that of their bulk crystals. 25 Since the lateral spacings of 0.19 and 0.21 nm, estimated from the diffraction patterns from the single-crystal nanocluster, are shorter than a lateral length of 0.23 nm for the C 5 H 5 group of a ferrocene molecule, 26 Fe atoms in aminoferrocene molecules forming the nanocluster could be stacked alternately as shown in Figure 2f. The molecules are arranged through noncovalent bonds within the nanoclsuters.…”

Section: Resultsmentioning

confidence: 99%

Morphological Change of Molecular Assemblies through On-Surface Chemical Reaction

2019

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Fabrication of molecular assemblies by arranging molecules through on-surface chemical reactions is an attractive way of functionalizing nanosheets chemically. Here, we study morphological changes of organometallic assemblies on a graphene oxide surface by controlling the formation of covalent bonds through on-surface chemical reactions with and without coupling agents. The difference in surface morphology originates from the different crystal growths of molecules diffusing on the surface, relating to the formation of covalent immobilization between the molecule and the surface. The molecules forming the assemblies have individual spins acquired by charge transfer between the molecule and the surface. The size and distribution of the assemblies on the surface produce morphology-related magnetism among the weakly interacting molecular spins. The present approach based on arranging simple molecules through on-surface chemical reactions provides new insights into molecular magnetism.

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“…d From Ref. [27]. (11), COOCH 2 C 6 H 5 (12) a o (2,5); * (3,4); the magnetic field increases towards the right.…”

Section: Decipher the Mystery Between Ferrocene And Cynichrodene Derimentioning

confidence: 97%

“…3e5. Table 4 [14,26,27] lists selected structural data of the series of some organometallic Cp(M) complexes bearing an electronwithdrawing substituent (azidocarbonyl, formyl) e (CO) 3 (CH 3 ) W(h 5 -C 5 H 4 CON 3 ) 10 and CpFe(h 5 -C 5 H 4 CHO) 13 [14] e or an electron-donating substituent via resonance (amino, alkoxycarbonylamino) e (CO) 2 (NO)Cr(h 5 -C 5 H 4 NH 2 ) 6 [26], (CO) 3 (CH 3 ) W(h 5 -C 5 H 4 NHCOOCH 3 ) 7, CpFe(h 5 -C 5 H 4 NHCOOCH 2 C 6 H 5 ) 16, and CpFe(h 5 -C 5 H 4 NH 2 ) 17 [27]. Several important features are observed.…”

Section: X-ray: Electron-donating and Electron-withdrawing Substituenmentioning

confidence: 99%

“…After obtaining the X-ray structures of 5 [12], 6 [24], 7, 10, 11, 13, 16 [25], and 17 [27], the average charges of C(2,5) and C(3,4) for complex 5 (À0.4274 and À0.3038), 6 (À0.5287 and À0.3090), 7 (À0.3483 and À0.2144), 10 (À0.3604 and À0.2655), 11 (À0.3818 and À0.2780), 13 (À0.4396 and À0.3123), 16 (À0.3119 and À0.2722), and 17 (À0.3556 and À0.3105) were determined by ab-initio calculations (Table 11). These values correlate well with the unequivocal assignments of the 13 C chemicals shifts (Table 3a).…”

Section: Compoundmentioning

confidence: 99%

See 1 more Smart Citation

Unequivocal assignments of C(2,5) and C(3,4) on the cyclopentadienyl ring of Cp2Fe, CpCr(CO)2(NO), and CpW(CO)3(CH3) bearing an electron-donating or electron-withdrawing substituent via resonance in 13C NMR spectra

Wang

Yang

et al. 2015

Journal of Organometallic Chemistry

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Crystal structure of ferrocenyl amine

Cited by 8 publications

References 12 publications

Weakly Interacting Molecular Spins in On‐Surface Synthesized Nanoclusters on a Graphene Oxide Nanosheet

Weakly Interacting Molecular Spins in On‐Surface Synthesized Nanoclusters on a Graphene Oxide Nanosheet

Morphological Change of Molecular Assemblies through On-Surface Chemical Reaction

Unequivocal assignments of C(2,5) and C(3,4) on the cyclopentadienyl ring of Cp2Fe, CpCr(CO)2(NO), and CpW(CO)3(CH3) bearing an electron-donating or electron-withdrawing substituent via resonance in 13C NMR spectra

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