Citation:
Abstract:
The preparation of the bulky secondary amide N-(2,6-diisopropylphenyl)-2,2-dimethylpropanamide and the determination of its crystal structure at 173(2) K are reported. The structure displays disorder of the( t)Bu methyl groups due to thermal motion and an infinite N-H center dot center dot center dot center dot O=C hydrogen-bonded chain described by a C-1(1)(4) graph set. Reaction of this amide with ZnCl2 or ZnBr2 in tetrahydrofuran (THF) results in clihalo-(tetrahydrofurano)-(N-(2,6-diisopropylphenyl)-2,2-dimethylpropan amido)-zinc(II) complexes (Cl, Br) for which the crystal structures have also been determined. These complexes, as well as a chloroform solvate of the dichloro-complex, contain N-H center dot center dot center dot center dot X-Zn hydrogen-bonded chains described by C;(6) graph sets. Evaporative crystallization results in the loss of both chloroform and THF to afford crystals determined to be bis(mu(2)-chloroydichloro-bis(N-(2,6-diisopropylphenyl)-2,2-dimethylprop anamido)-dizinc(II) by single crystal X-ray diffraction. This dimeric complex shows a complex network of N-H center dot center dot center dot center dot Cl-Zn hydrogen bonds describable by C-1(1)(6), C(1)(()(1)8), and C-2(2)(16) chains, small R-4(4)(28) molecular ``squares'', and larger R-6(6)(44) rings.