Secondary bonding. Part 8. The crystal and molecular structure of diphenyl telluroxide

1982 ◽  
pp. 709 ◽  
Author(s):  
Nathaniel W. Alcock ◽  
W. David Harrison
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Secondary Bonding

127I Mössbauer studies of oxygen bonded iodine complexes. 2. Aryliodine(III)carboxylates; the crystal and molecular structure of bis(trifluoroacetato)pentafluorophenyliodine(III), (C6F5)I(O2CCF3)2

1989 ◽  
Vol 67 (11) ◽  
pp. 1878-1885 ◽  
Author(s):  
Madhumita Bardan ◽  
Thomas Birchall ◽  
Christopher S. Frampton ◽  
Pratibha Kapoor
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Crystal And Molecular Structure ◽  
Asymmetric Unit ◽  
Space Group ◽  
Mössbauer Studies ◽  
Mossbauer Spectra ◽  
Independent Molecules ◽  
Secondary Bonding ◽  
Iodine Complexes

The 127I Mössbauer spectra of a series of mono- and diaryliodine(III) carboxylates have been recorded at 4.2 K. The observed parameters are shown to be strongly dependent on the primary bonding arrangement about iodine only and the secondary bonding interactions have little or no effect. The crystal and molecular structure of bis(trifluoroacetato)pentafluorophenyliodine(III), (C6F5)I(O2CCF3)2, has been determined. Crystals are triclinic, of space group [Formula: see text], witsh a = 5.732(2) Å, b = 12.127(4) Å, c = 29.658(9) Å, α = 116.53(2)°, β = 98.02(2)°, γ = 117.09(2)°, V = 1482.0(8) Å3, Dc = 2.33 g cm−3 for Z = 4, and R1 = 0.0420 (R2 = 0.0431) for 2722 reflections with I > 3σ(I). The two independent molecules in the asymmetric unit have essentially the same primary geometry about the central iodine, a distorted T-shaped AX3E2 arrangement. Keywords: 127I Mössbauer, aryliodine(III) carboxylates, crystal structure, (C6F5)I(O2CCF3)2.

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