Three　new　metal-organic　frameworks,　[Zn(atz)(nic)](n)(1),　[Zn(atz)(isonic)](n)　center　dot　nHisonic(2)　and　[Cd(atz)　(isonic)](n)(3)　(Hnic　=　nicotinic　acid,　Hisonic　=　isonicotinic　acid),　have　been　firstly　synthesized　by　employing　mixed-ligand　of　pyridinecarboxylate　with　the　in　situ　generated　ligand　of　5-aminotetrazolate(atz(-)),　and　characterized　by　elemental　analysis,　IR　spectroscopy,　TGA　and　single　crystal　X-ray　diffraction.　The　results　revealed　that　1　presents　a　two-dimensional　(2D)　＂sql＂　topological　network　constructed　from　the　linear　chain　Subunit　of　Zn(nic)(2)　and　atz(-)　ligand.　A　remarkable　feature　of　2　is　a　2-fold　interpenetrated　diamondoid　network　with　free　Hisonic　molecules　locating　in　the　channels　formed　by　the　zigzag　chain　subunits　of　Zn(isonic)(2).　Complex　3　is　a　3D　non-interpenetrated　pillared　framework　constructed　from　the　double　chain　Subunits　of　Cd-COO--Cd.　It　possesses　a　rarely　observed　(4,6)-connected　＂fsc＂　topology.　The　thermal　stabilities　and　fluorescent　properties　of　the　complexes　were　investigated.　All　of　these　complexes　exhibited　intense　fluorescent　emissions　in　the　solid　state　at　room　temperature.　(C)　2009　Elsevier　Inc.　All　rights　reserved.