A　novel　one-dimensional　polyoxovanadium　borate　(H3NCH2CH2NH3)(3)[(VO)(12)O-4{B8O17(OH)(4)}(2){Na(H2O)}(2)].(H3O)(2)(H2O)(6.5)　(1)　has　been　synthesized　by　the　hydrothermal　method　and　the　structure　determined　by　X-ray　crystallography.　The　structure　consists　of　a　continuous　contorted　V-12　ring,　constructed　from　edge-sharing　VO5　square　pyramids.　Two　{B8O17(OH)(4)}(14-)　polyborate　chains　fill　in　the　cavities　formed　by　the　V-12　ring.　The　[(VO)(12)O-4{B8O17(OH)(4)}(2)](12-)　clusters　are　connected　by　unusual　binuclear　Na+　units　into　ID　chains.　The　binuclear　Na+　units　are　formed　by　two　neighboring　sodium　atoms　sharing　two　mu(2)-O　from　B-O-B.　Each　sodium　atom　is　in　a　distorted　octahedral　geometry.　Other　characterizations　are　also　described　by　elemental　analysis,　thermal　analysis　and　IR,　EPR　spectra.　(C)　2004　Elsevier　B.V.　All　rights　reserved.