silicon

• Formula: Si
• Molecular weight: 28.0855
• IUPAC Standard InChI: InChI=1S/Si Copy

  
• IUPAC Standard InChIKey: XUIMIQQOPSSXEZ-UHFFFAOYSA-N Copy
• CAS Registry Number: 7440-21-3
• Chemical structure:
  This structure is also available as a 2d Mol file
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• Information on this page:
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
• Data at other public NIST sites:
  • NIST Atomic Spectra Database - Lines Holdings (on physics web site)
  • NIST Atomic Spectra Database - Levels Holdings (on physics web site)
  • NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
  • Computational Chemistry Comparison and Benchmark Database
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  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(HSi^- • 4294967295) +  = HSi^-

By formula: (HSi^- • 4294967295Si) + Si = HSi^-

(Si₃^- • 4294967295) +  = Si₃^-

By formula: (Si₃^- • 4294967295Si) + Si = Si₃^-

(Si₄^- • 4294967295) +  = Si₄^-

By formula: (Si₄^- • 4294967295Si) + Si = Si₄^-

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Kasdan, Herbst, et al., 1975
Kasdan, A.; Herbst, E.; Lineberger, W.C., Laser photoelectron spectrometry of the negative ions of silicon and its hydrides, J. Chem. Phys., 1975, 62, 541. [all data]

Arnold and Neumark, 1994
Arnold, C.C.; Neumark, D.M., Threshold Photodetachment Zero-Electron Kinetic Energy Spectroscopy of Si-3(-), J. Chem. Phys., 1994, 100, 3, 1797, https://doi.org/10.1063/1.466532 . [all data]

Nakajima, Taguwa, et al., 1995
Nakajima, A.; Taguwa, T.; Nakao, K.; Gomei, M.; Kishi, R.; Iwata, S.; Kaya, K., Photoelectron Spectroscopy of silicon-carbon cluster Anions (SinCm-), J. Chem. Phys., 1995, 103, 6, 2050, https://doi.org/10.1063/1.469731 . [all data]

Notes

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• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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