trifluoromethanesulfonic acid-d

trifluoromethanesulfonic acid-d

formula | CF_3SO_3D Hill formula | CDF_3O_3S name | trifluoromethanesulfonic acid-d IUPAC name | trifluoromethanesulfonic acid deuterio ester alternate names | deuterio trifluoromethanesulfonate | deuterotrifluormethansulfonic acid | trifluoromethanesulfonic acid deuterio ester mass fractions | S (sulfur) 0.212% | F (fluorine) 0.377% | O (oxygen) 0.318% | C (carbon) 0.0795% | H (hydrogen) 0.0133%

Draw the Lewis structure of trifluoromethanesulfonic acid-d. Start by drawing the overall structure of the molecule, ignoring potential double and triple bonds: Count the total valence electrons of the carbon (n_C, val = 4), fluorine (n_F, val = 7), hydrogen (n_H, val = 1), oxygen (n_O, val = 6), and sulfur (n_S, val = 6) atoms: n_C, val + 3 n_F, val + n_H, val + 3 n_O, val + n_S, val = 50 Calculate the number of electrons needed to completely fill the valence shells for carbon (n_C, full = 8), fluorine (n_F, full = 8), hydrogen (n_H, full = 2), oxygen (n_O, full = 8), and sulfur (n_S, full = 8): n_C, full + 3 n_F, full + n_H, full + 3 n_O, full + n_S, full = 66 Subtracting these two numbers shows that 66 - 50 = 16 bonding electrons are needed. Each bond has two electrons, so we expect that the above diagram has all the necessary bonds. However, to minimize formal charge oxygen wants 2 bonds. Identify the atoms that want additional bonds and the number of electrons remaining on each atom: In order to minimize their formal charge, atoms with large electronegativities can force atoms with smaller electronegativities on period 3 or higher to expand their valence shells. The electronegativities of the atoms are 2.20 (hydrogen), 2.55 (carbon), 2.58 (sulfur), 3.44 (oxygen), and 3.98 (fluorine). Because the electronegativity of sulfur is smaller than the electronegativity of oxygen, expand the valence shell of sulfur to 6 bonds. Therefore we add a total of 2 bonds to the diagram: Answer: | |

3D structure

molar mass | 151.08 g/mol phase | liquid (at STP) boiling point | 162 °C density | 1.708 g/cm^3

density | 1.708 g/cm^3

H-2 | 1

CAS number | 66178-41-4 PubChem CID number | 105320 PubChem SID number | 24863002 SMILES identifier | C(F)(F)(F)S(=O)(=O)O InChI identifier | InChI=1/CHF3O3S/c2-1(3, 4)8(5, 6)7/h(H, 5, 6, 7)/i/hD/f/h5H/i5D MDL number | MFCD00068354