Alkyl zinc derivatives of tris(3,5-dialkyl-2-hydroxyphenyl)methanes (alkyl = tert-butyl la, methyl Ib tert-pentyl Ic) have been prepared by reaction with dimethyl or diethylzinc, and characterized Whereas dimethylzinc with la or diethylzinc with Ib give Sg symmetric, hexanuclear aggregates with the general formula 1(2)(ZnR)(6) (R = Me 2a, Et 2b), when la reacts with diethylzinc, solvent dependent reactions take place. If dichloromethane is used for the reaction solvent, a dimeric, C-2 symmetric, tetranuclear product with the formula 1a(2)Zn(2)(ZnEt)(2) (3) is isolated while in diethyl ether, a Ct symmetric, pentanuclear aggregate 1a(2)Zn(ZnEt)(4) (4) forms, and in tetrahydrofuran a C-3 symmetric trinuclear compound la[ZnEt(THF)](3) (5a) is produced. Each example is represented by a single-crystal X-ray structure determination. Preliminary studies regarding their activity toward the copolymerization of cyclohexene oxide and carbon dioxide are also reported.