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Kalium oktaklorodimolibdat

Kalium oktaklorodimolibdat(4−)
Penanda
3DMet {{{3DMet}}}
Nomor EC
Nomor RTECS {{{value}}}
Sifat
K4Cl8Mo2
Massa molar 631.9 g/mol
Penampilan kristal merah
Densitas 2.54 g/cm3
larut
Kecuali dinyatakan lain, data di atas berlaku pada suhu dan tekanan standar (25 °C [77 °F], 100 kPa).
N verifikasi (apa ini YaYN ?)
Referensi

Kalium oktaklorodimolibdat (sistematis bernama kalium bis(tetraklorodimolibdat) (Mo-Mo) (4−)) adalah senyawa anorganik dengan rumus kimia K4Mo2Cl8 (juga ditulis sebagai K4[Cl4MoMoCl4]). Ini dikenal sebagai padatan mikrokristalin berwarna merah. Anion adalah bunga bersejarah sebagai salah satu ilustrasi awal ikatan empat kali lipat. Garam biasanya diperoleh sebagai dihidrat berwarna merah muda.

Anion oktaklorodimolibdat(II), [Mo2Cl8]4−, yang memiliki ikatan Mo-Mo empat kali lipat

Senyawa dibuat dalam dua langkah dari molibdenum heksakarbonil:[1][2]

2 Mo(CO)6 + 4 HO2CCH3 → Mo2(O2CCH3)4 + 2 H2 + 12 CO
Mo2(O2CCH3)4 + 4 HCl + 4 KCl → K4Mo2Cl8 + 4 HO2CCH3

Reaksi asetat dengan HCl pertama kali dideskripsikan sebagai pemberian senyawa trimolibdenum,[3] tetapi analisis kristalografi selanjutnya mengkonfirmasi bahwa produk tersebut mengandung ion Mo2Cl84- dengan simetri D4h. Jarak Mo – Mo adalah 2,14 Å.[4]

Referensi

  1. ^ Brignole, A. B.; Cotton, F. A.; Dori, Z. (1972). Rhenium and Molybdenum Compounds Containing Quadruple Bonds. Inorg. Synth. Inorganic Syntheses. 13. hlm. 81–89. doi:10.1002/9780470132449.ch15. ISBN 978-0-470-13244-9. 
  2. ^ Girolami, G. S.; Rauchfuss, T. B.; Angelici, R. J. (1999). Synthesis and Technique in Inorganic Chemistry. Mill Valley, CA: University Science Books. ISBN 978-0-935702-48-4. 
  3. ^ Allison, G. B.; Anderson, I. R.; Sheldon, J. C. (1967). "The Preparation of Halogenotrimolybdate(II) Compounds". Aust. J. Chem. 20 (5): 869–876. doi:10.1071/CH9670869. 
  4. ^ Brencic, Jurij V.; Cotton, F. Albert (1969). ""Octachlorodimolybdate(II) Ion. Species with a Quadruple Metal–Metal Bond". Inorg. Chem. 8: 7–10. doi:10.1021/ic50071a002. 
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