In　this　paper,　a　new　anionic　metal-organic　framework,　[In(PBPTTBA)][(CH3)(2)NH2]　(BUT-29)　has　been　synthesized　through　the　reaction　of　tetratopic　acid　ligand　with　double　Lewis　pyridine　sites,　4,4＇,4　＇＇,4＇＇＇-(4,4＇-(1,4-phenylene)bis(pyridine-6,4,2-triyl))　tetrabenzoic　acid　(H(4)PBPTTBA)　and　In(NO3)(2)　center　dot　5H(2)O　and　fully　characterized　by　single-crystal　X-ray　diffraction　(SXRD),　powder　X-ray　diffraction　(PXRD),　thermogravimetric　analysis　(TGA),　infrared　spectroscopy　(IR),　and　elemental　analysis　(EA).　BUT-29　can　be　used　as　an　efficient　adsorbent　for　the　selective　removal　of　organic　cationic　dyes　in　N,N＇-dimethylformamide　(DMF)　solution.　The　adsorption　capacities　of　BUT-29　toward　methylene　blue　and　crystal　violet　at　298　K　can　reach　1119　mg/g　and　832　mgig,　respectively.　Moreover,　the　adsorbed　dyes　can　be　released　in　the　DMF　solution　of　LiNO3　gradually.　(C)　2018　Chinese　Chemical　Society　and　Institute　of　Materia　Medica,　Chinese　Academy　of　Medical　Sciences.　Published　by　Elsevier　B.V.　All　rights　reserved.