Font Size: a A A

Synthesis, Characterization And Crystal Structure Of The Transition Metal Complexes With Sulfonamide And Its Schiff Base

Posted on:2009-07-03Degree:DoctorType:Dissertation
Country:ChinaCandidate:S N LiFull Text:PDF
GTID:1101360242488410Subject:Inorganic Chemistry
Abstract/Summary:PDF Full Text Request
In this paper,ethylenediamine,1,2-propanediamine,1,2-diaminobenzene, diethylenetriamine and benzidine were used as original materials based on sulfonamide and its Schiff base.5 sulfonamide and 8 sulfonamide Schiff base were obtained.20 compounds were prepared and 18 obtained as single crystals by general solution,microwave and electrochemical synthesis method.The obtained compounds were characterized by elemental analysis,X-ray single crystal diffraction,X-ray powder diffraction,IR,UV-Vis and TG-DSC.Moreover,some compounds were discussed by quantum chemistry results.In chapter 2 and 3,N-tosyl-ethylenediamine(Tsen)were prepared and reacted with salicylaldehyde,5-Br-salicylaldehyde,2-hydroxy-1-naphthaldehyde and 2-pyridinealdehyde.4 sulfonamide Schiff base ligands were obtained and reacted with transitional metals.11 complexes as crystals were prepared,that is,[Cu(Tsen)2](1), [Cu(salTsen)(H2O)](2),[Cu(salTsen)2](3),[Ni(salTsen)2](4),[Zn(salTsen)2]·H2O (5),[Cu(sal)(phen)]ClO4(6),[Cu(5-BrsalTsen)2](7),[Cu(5-BrsalTsen)(H2O)](8),[Cu(napnTsen)2](9),[Cu(naphTsen)(H2O)]2(10)和[Mn(pyTsen)2Cl2]·1.5H2O(11)。In chapter 4,N-tosyl-propanediamine(Tspn)were prepared based on 1,2-propanediamine.And the corresponding Schiff base complex is obtained with the composition of[Cu(salTspn)(H2O)](12).Also three Schiff base complexes based on N-tosyl-diaminebenzene(Tsophan)were prepared and one was obtained as single crystal with the composition of[Cu(salTsophan)(H2O)](13).In chapter 5,N,N"-tosyl-diethylenetriamine(BisTsdeta)were prepared based diethylenetriamine.Different compounds were obtained when BisTsdeta reacted with different metal salts,which are binuclear complex[Cu2(bisTsdeta)2(H2O)2](17)and supermolecule[Cu(mal)2(bisTsdeta)2·H2O](18).Also complex[Cu(saldeta)(H2O)]Cl (19)was obtained when the reaction condition changed.N,N'-Bistosylbenzidine (BistTsBZD)was obtained based on rigid benzidine,and the supermolecule BisTsBZD·2DMF(20)was obtained as single crystal.There are three kinds of coordination mode of sulfonamide Schiff base,which are anionic bidentate HL-(3,4,5,7,9),dianionic tridentate(2,8,12,13)and dianionicμ2-bridged tetradentate(10). For the structure of the compounds,there are binuclear structure bridged by the oxygen atom of tosyl group(10,17),mononuclear structure coordinated by sulfonamide or its Schiff base(1,2,3,4,5,7,8,9,11,12,13),supermolecule without the coordination of sulfonamide(18,20)and the monoclear complexes with the residue group in which the sulfonamide breaking in the iigand.The supermolecule interactions are various in the crystal of the compounds.For complexes 2,8 and 12 having similar ligands,dimers are formed by the doubleπ…πinteractions between chelated ring and benzene ring of two molecules.And the dimmers are connected by weak interactions(2π…π,C—H…O;8π…π,O—H…O;12 C—H…π,O—H…O)to form 2D(2,8)and 3D(12)structure.For complexes 3,7 and 9 having similar ligands with different aldehydes,the molecules are connected to form 1D chain(3 and 7)byπ…πinteractions and to form 2D structure(9)by C—H…πinteractions.For complexes 3,4 and 5 of different metals with same ligands,the molecules are connected to form 1D structure byπ…π(3)and to 3D structure by C—H…πand N—H…O(4),C—H…πand N—H…O(5).For complexes 10 and 13 with the more rigid ligands comparision with 2,8 and 12,the packing mode are 3D(10 O—H…O,C—H…O,C—H…π)and 1D(π…πand Cu…O)by weak interactions.For complexes(1,17 and 18)coordinated by sulfonamide,the molecules are connected to 2D structure by weak interactions,that is,N—H…O and C—H…πin 1, C—H…πand C—H…O in 17.For complounds 18 and 20 in which the sulfonamide are not coordinate to metal, the molecules are connected to 2D by N—H…O hydrogen bonds and 3D by C—H…O hydrogen bonds,respectively.Also complexes 6,16 and 19 are obtained as the tosyl breaking away the original ligands.The complexes are connected to 1D chain byπ…πinteractions for 6 and 16, and to 2D by N—H…Cl and O—H…O for 19.Moreover,two dimensional(4,4)topology network were formed by weak interactions for compounds 5 and 19.
Keywords/Search Tags:N-tosyl-amine, sulfonamide Schiff base, crystal structure, weak interaction, supramolecule
PDF Full Text Request
Related items