A　metal-coordination　polymer　[Co(4)(BPTC)(2)(H(2)O)(8)]center　dot　13H(2)O　(1,　BPTC　=　3,3＇4,4＇-benzophenone-tetracarboxylate)　containing　nano-sized　channels　was　hydrothermally　synthesized.　It　has　remarkable　3D　architecture　generated　by　unique　rod-shaped　SBUs(SBUs　=　Secondary　Building　Units)　linked　up　by　T-shaped　ligands　and　present　a　novel　constructional　strategy　of　3D　porous　metal-organic　framework.　One-dimensional　water　pipes　are　formed　in　the　channels,　which　further　stabilize　the　3D　framework.　(C)　2010　Elsevier　B.V.　All　rights　reserved.