| Abstract
| - The reaction of dimethyl- or diethylzinc withN,N,N-trimethylethylene- orpropylenediamine gave a series ofcrystalline alkyl(dialkylamido)zinc compounds for which X-raysingle-crystal structures have been determined.The four title compounds consist of dimeric molecular units,[RZnNMe(CH2)nNMe2]2.The same reactions inthe presence of traces of moisture produced two different novelcompounds whose crystal structures containhexameric[R4Zn6O2(MeN(CH2)nNMe2)4]zinc units. Crystal data: MeZnNMe(CH2)3NMe2(1), orthorhombic,Pbca, a = 14.578(2) Å, b =17.328(3) Å, c = 15.765(3)Å, β = 90°,Z = 8, Rw = 0.1095; EtZnMe(CH2)3NMe2(2), orthorhombic, Pbca, a =17.080(1) Å, b = 16.062(1) Å, c =17.242(1) Å, β = 90, Z = 8,Rw = 0.0878;MeZnNMe(CH2)2NMe2(4), triclinic, P1̄, a =7.305(1) Å, b = 10.185(1) Å, c =12.307(1) Å, α = 82.94(1)°, β= 88.31(1)°, γ = 80.69(1)°, Z = 2,Rw = 0.1089;EtZnNMe(CH2)2NMe2(5), triclinic, P1̄, a =7.419(6) Å, b =8.317(6) Å, c = 8.888(6)Å, α =86.13(5)°, β = 105.59(6)°, γ = 111.47(6)°,Z = 1, Rw = 0.0841;Me4Zn6O2[MeN(CH2)3NMe2]4(6), monoclinic, P21/n, a= 18.485(7) Å, b = 12.585(4) Å, c= 19.756(5) Å, α= 90°, β = 110.92(2)°, γ = 90°, Z =4, Rw = 0.1234;Et4Zn6O2[MeN(CH2)2NMe2]4(7), monoclinic, I2, a=11.387(1) Å, b = 15.547(1) Å, c =12.320(1) Å, β = 90°, Z = 2,Rw = 0.0906.
- The reaction of dimethyl- ordiethylzinc withN,N,N-trimethylethylene- orpropylenediamine gave a series of crystallinealkyl(dialkylamido)zinc compounds for which X-raysingle-crystal structures have been determined. The structuresconsist of dimeric[RZnNMe(CH2)nNMe2]2and hexameric[R4Zn6O2(MeN(CH2)nNMe2)4]zinc units.
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