Microwave-assisted synthesis, crystal structure and toxicity of L-aspartic acid zinc spiral linear supramolecular polymer

Abstract

L -aspartic acid zinc was synthesized by a rapid and convenient method in high yield under microwave conditions, and its single crystal structure was analyzed by X-ray diffraction. The structure unit of the title compound is [Zn( L -Asp)(H 2 O) 2 ] •H 2 O, which is a bicyclo-complex forming a spiral linear polymer via coordination bonds. The spiral linear polymers are assembled as a three-dimensional supramolecule by intermolecular hydrogen bonds. The crystal belongs to the orthorhombic crystal system, P2(1)2(1)2(1) space group, a =0.7830(3) nm, b =0.9369(4) nm, c =11.599(5) nm, α = β = γ =90.00°, V =0.8509(6) nm 3 , Z =4, D c=1.955 g/cm 3 , F (000)=512, μ =2.289. The toxicity of the title compound is lower than that of glutamic acid zinc and zinc sulfate.