Synthesis of two novel cobalt complexes and their crystal structures

Two new cobalt complexes were successfully synthesized from the reaction of binaphthyl Schiff base 2 with Co(OAc) 2 in the presence of sodium methoxide at 80 °C for 24 h and Co(acac) 3 in toluene under reflux. Their unique crystal structures are unambiguously disclosed by X‐ray analysis. Complex 3 is triclinic, space group P 1 , unit cell dimensions a  = 10.742(2) Å, b  = 11.153(2) Å, c  = 12.715 Å, α = 79.865(3) °, β = 76.053 °, γ = 72.532(4) °, volume 1401.3(5) Å 3 , Z  = 2. Complex 4 is triclinic, space group P 1 , unit cell dimensions a  = 10.801(2) Å, b  = 12.554(3) Å, c  = 15.219(3) Å, α = 105.672(4) °, β = 103.048 °, γ = 104.594(4) °, volume 1824.8(7) Å 3 , Z  = 2, calculated density 1.428 Mg m −3 . Copyright © 2003 John Wiley & Sons, Ltd.