WebElements mini logoChemistry: WebElements Periodic Table: Professional Edition: Thallium: compound data [thallium (I) selenide]
Pro Home Scholar Home Books WebElements CD Chemdex Chemputer News Forums ChemWiki Help
WebElements Pro logo WebElements Pro logo
Dutch flag icon Thallium French flag icon thallium German flag icon Thallium Italian flag icon tallio Portuguese flag icon Tálio Spanish flag icon talio Swedish flag icon Tallium

Thallium speak thallium (female voice) speak thallium (male voice)

81
Tl
204.3833(2)

Compounds of thallium:

thallium (I) selenide

  • Formula as commonly written: Tl2Se
  • Hill system formula: Se1Tl2
  • CAS registry number: [15572-25-5]
  • Formula weight: 487.727
  • Class: selenide

Synonyms

  • thallium (I) selenide
  • thallium selenide
  • dithallium selenide

Physical properties

  • Colour: grey
  • Appearance: solid
  • Melting point: 340°C
  • Boiling point:
  • Density: 9050 kg m-3

Element analysis and oxidation numbers

For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
Element % Formal oxidation state Formal electronic configuration
Se 16.19 -2 [Ar].3d10.4s2.4p6
Tl 83.81 1 [Xe].4f14.5d10.6s2

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Tl2Se unit with the most intense ion set to 100%.

Formula: Tl2Se1

mass  %
480   0.2 
481 0.0
482 3.5 __
483 0.2
484 18.8 _________
485 1.0
486 56.1 ____________________________
487 1.1 _
488 100.0 __________________________________________________
489 0.0
490 85.9 ___________________________________________
491 0.0
492 13.8 _______

Suppliers

Coming soon....

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.
WebElements Pro logo

WebElements is the periodic table on the WWW

WebElementsWebElementsTM, the periodic table on the WWW, URL: http://www.webelements.com/
Copyright 1993-2003 Mark Winter [The University of Sheffield and WebElements Ltd, UK]. All rights reserved.
Document served: Sunday 18th April, 2004