The title complex,[Co(L)(H_2O)]_n,1,where H_2 L=3-(carboxymethoxy)-2-naphthoic acid,was synthesized through hydrothermal synthesis and its crystal structure was determined by X-ray diffraction analysis.The crystal is monoclinic,space group P2_1 with a=0.505 87(7)nm,b=0.942 88(12)nm,c=1.234 03(16)nm,β=95.015(9),V= 0.586 35(13)nm 3,Z=2,M r =321.14,D c =1.819 g·cm~(-3),μ=1.487 mm~(-1),F(000)=326,R int =0.023 8,R_1 =0.022 8,wR_2 =0.053 2,and the Flack parameter is 0.026(13).In the complex,the cobalt atom is six-coordinated by six oxygen atoms,co...