name of boron tribromide dimethyl sulfide complex

boron tribromide dimethyl sulfide complex

formula | BBr_3·S(CH_3)_2 Hill formula | C_2H_6BBr_3S name | boron tribromide dimethyl sulfide complex IUPAC name | tribromo-dimethylsulfonioboron alternate names | dimethyl sulfide-tribromoborane | tribromoborane-methyl sulfide | tribromo-dimethylsulfonio-boron | tribromo-dimethylsulfonioboron mass fractions | B (boron) 3.46% | Br (bromine) 76.7% | C (carbon) 7.68% | H (hydrogen) 1.93% | S (sulfur) 10.3%

Draw the Lewis structure of boron tribromide dimethyl sulfide complex. Start by drawing the overall structure of the molecule: Count the total valence electrons of the boron (n_B, val = 3), bromine (n_Br, val = 7), carbon (n_C, val = 4), hydrogen (n_H, val = 1), and sulfur (n_S, val = 6) atoms: n_B, val + 3 n_Br, val + 2 n_C, val + 6 n_H, val + n_S, val = 44 Calculate the number of electrons needed to completely fill the valence shells for boron (n_B, full = 8), bromine (n_Br, full = 8), carbon (n_C, full = 8), hydrogen (n_H, full = 2), and sulfur (n_S, full = 8). Note that boron has three valence electrons but four bonds, implying that sulfur donated an electron to boron, allowing both of these atoms to fully fill their valence shells: n_B, full + 3 n_Br, full + 2 n_C, full + 6 n_H, full + n_S, full = 68 Subtracting these two numbers shows that 68 - 44 = 24 bonding electrons are needed. Each bond has two electrons, so the above diagram has all the necessary bonds. There are 12 bonds and hence 24 bonding electrons in the diagram. Fill in the remaining unbonded electrons on each atom. In total, there remain 44 - 24 = 20 electrons left to draw (note that sulfur has donated an electron to boron in order to have a filled valence). Lastly, fill in the formal charges: Answer: | |

molar mass | 312.65 g/mol phase | solid (at STP) melting point | 107 °C

CAS number | 29957-59-3 PubChem CID number | 4181510 PubChem SID number | 24854865 SMILES identifier | [B-]([S+](C)C)(Br)(Br)Br InChI identifier | InChI=1/C2H6BBr3S/c1-7(2)3(4, 5)6/h1-2H3 MDL number | MFCD00043296