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Reaction of the Zn, Cd, or Co nitrate salts with the deprotonated ligand (2-hydroxy-3-t-butyl-methylphenyl)bis(3,5-dimethylpyrazolyl)methane (L1O−) in methanol produced the following complexes: [(L1OH)Zn(NO3)2] in two isomorphs, a = 40.983(8) A, b = 9.571(2) A, c = 15.667(8) A, α = 90○, β = 106.38(1)○, γ = 90○, C2/c, and a = 13.027(3) A, b = 14.781(4) A, c = 16.107(3) A, α = 90○, β = 105.30(1)○, γ = 90○, P21/n; [(L1OH)Cd(pz)(NO3)2] a = 14.7476(2) A, b = 13.5411(2) A, c = 16.7223(2) A, α = 90○, β = 110.3840(10)○, γ = 90○, P21/c; and [(L1O)Co(pz)(NO3)] a = 11.4240(2) A, b = 13.4498(2) A, c = 13.8056(2) A, α = 105.2080(10)○, β = 105.8130(10)○, γ = 112.7470(10)○, P\({\bar 1}\). The Zn adopts a pseudotetrahedral four-coordinate geometry where the potentially tridentate ligand is actually bidentate with a protonated and uncoordinated phenoxy arm. The Co complex is pseudooctahedral six-coordinate where the phenoxy arm is deprotonated and coordinated. Finally the Cd complex is seven-coordinate but the metal is not coordinated through the phenoxy group that is again protonated. |
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