Three　mononuclear　copper　complexes　of　9-hydroxy-9H-fluorene-9-carboxylic　acid,　[Cu(C14H9O3)2(C5H　5N)2]·2CH3OH　(I),　[Cu(C14H9O3)2(C2H　5OH)(H2O)]·C2H　5OH·CH3OH　(II)　and　[Cu(C14H9O3)2(C6H　16N2)]·C2H5OH　(III),　were　synthesized　and　characterized　by　IR　and　Raman　spectra.　Complex　I　was　also　characterized　by　X-ray　diffraction.　The　main　vibration　frequencies　in　the　free　9-hydroxy-9H-fluorene-9-carboxylic　acid　and　the　three　title　complexes　have　been　assigned.　The　COO　antisymmetric　and　symmetric　frequencies　of　the　α-hydroxylated　acid　complexes　were　identified　in　the　regions　1630-1605　and　1365-1340　cm-1,　respectively.　The　frequency　shift　of　hydrogen　bonds　in　the　title　complexes　is　discussed.　The　copper　atom　in　title　complex　I　is　octahedrally　coordinated　by　four　oxygen　atoms　and　two　nitrogen　atoms.　The　molecules　of　title　complex　I　are　connected　through　hydrogen　bonds,　resulting　in　an　infinite　chain.　The　coincidence　between　spectra　and　structural　characters　has　been　discussed.　©　1999　Elsevier　Science　S.A.　All　rights　reserved.