Coordination behaviour of symmetrical hexadentate N-donor Schiff bases towards zinc(II)pseudohalides: Syntheses, crystal structures and luminescence

被引:68
作者
Ghosh, Rajarshi
Rahaman, Sk Hafijur
Lin, Chun-Nan
Lu, Tian-Huey
Ghosh, Barindra K.
机构
[1] Univ Burdwan, Dept Chem, Burdwan 713104, W Bengal, India
[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
关键词
zinc(II); azide; thiocyanate; hexadentate Schiff base; luminescence;
D O I
10.1016/j.poly.2006.05.037
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Two new Schiff bases, N-(1-pyridin-2-ylformylidene)-N'-[2-({2-[(1-pyridin-2-ylformylidene)amino]ethyl}amino)ethyl]ethane-1,2-diamine (L-1) and N-(1-pyridin-2-ylformylidene)-N'-[2-(4-{2-[(1-pyridin-2ylformylidene)amino]ethyl}piperazin-1-yl)ethyl]amine (L-2) have been prepared and used to synthesize two series of zinc(II) pseudohalide complexes of the dinuclear type [Zn-2(L-1/L-2)(X)(4)] (1a-1d) (L-1:X = N-3(-), 1a and X = NCS-, 1b; L-2:X = N-3(-) 1c and X = NCS-, 1d) and the molecular ion-pair type [Zn(L-1/L-2)][Zn(X)(4)] (2a-2d) (L-1:X = N-3(-), 2a and X = NCS-, 2b; L-2:X = N-3(-), 2c and X = NCS-, 2d). Elemental, spectral and other physicochemical results are used to characterize the complexes. Single crystal X-ray diffraction studies confirm the structure of two representative members, [Zn-2(L-2)(N-3)(4)] (1c) and [Zn(L-1)][Zn(NCS)(4)] (2b). The structural analyses reveal that each zinc atom in dinuclear 1c, has a distorted trigonal bipyramidal geometry with a ZnN5 chromophore, whereas in molecular ion-pair 2b, the zinc(II) ion has a distorted octahedral environment in the cationic part with a ZnN6 chromophore and the remaining zinc(II) ion in the anioic part has a distorted tetrahedral geometry with a ZnN4 environment. All the complexes display intraligand (1)(pi-pi*) fluorescence and intraligand (3)(pi-pi*) phosphorescence in glassy solutions (77 K). (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3104 / 3112
页数:9
相关论文
共 54 条
[1]   Four one-dimensional cadmium(II) polymers: one chairlike chain containing four azido bridging modes and three double end-on azido-bridged uniform chains [J].
Bai, SQ ;
Gao, EQ ;
He, Z ;
Fang, CJ ;
Yan, CH .
CRYSTENGCOMM, 2004, 6 :606-611
[2]   The coordination behaviour of two structural isomeric ligands towards cadmium (II):: Synthesis, spectroscopic characterization and crystal structures [J].
Barros-García, FJ ;
Luna-Giles, F ;
Maldonado-Rogado, MA ;
Viñuelas-Zahínos, E .
POLYHEDRON, 2006, 25 (01) :43-51
[3]   Synthesis, structure and properties of [Zn(dpa)(N3)2] and [Zn(dpa)(N3)(NO3)]2 (dpa=2,2'-dipyridylamine):: composition tailored architectures [J].
Bose, D ;
Rahaman, SH ;
Mostafa, G ;
Walsh, RDB ;
Zaworotko, MJ ;
Ghosh, BK .
POLYHEDRON, 2004, 23 (04) :545-552
[4]   Architectures in two crystalline homo and hetero two-dimensional polymers of the type [Cd3(tren)2(NCS)6]n and [Ni2Cd(tren)2(NCS)6]n [tren = Tris(2-aminoethyl)amine] through molecular ion bridges [J].
Bose, D ;
Rahaman, SH ;
Ghosh, R ;
Mostafa, G ;
Ribas, J ;
Hung, CH ;
Ghosh, BK .
POLYHEDRON, 2006, 25 (03) :645-653
[5]   Bimetallic complex of the type [Cu(tren)(NCS)]4[Mn(NCS)6]:: A hydrogen bonded network structure [J].
Bose, D ;
Mostafa, G ;
Walsh, RDB ;
Zaworotko, MJ ;
Ghosh, BK .
POLYHEDRON, 2006, 25 (03) :663-670
[6]   The Mn(II)-2,2′-dipyridylamine-pseudohalide system:: Synthesis, crystal structure and luminescence behaviour of [Mn(dpa)2(X)2]•H2O and [Mn(dpa)2(X)(OH2)]ClO4 (dpa=2,2′-dipyridylamine;: X = N3-NCO-) [J].
Bose, D ;
Mostafa, G ;
Fun, HK ;
Ghosh, BK .
POLYHEDRON, 2005, 24 (06) :747-758
[7]   Polymeric end-to-end bibridged cadmium(II)thiocyanates containing monodentate and bidentate N-donor organic blockers:: supramolecular synthons based on π-π and/or C-H•••π interactions [J].
Bose, D ;
Banerjee, J ;
Rahaman, SH ;
Mostafa, G ;
Fun, HK ;
Walsh, RDB ;
Zaworotko, MJ ;
Ghosh, BK .
POLYHEDRON, 2004, 23 (12) :2045-2053
[8]   Synthesis, characterization, and electrical, electrochemical and gas sensing properties of a novel ball-type four t-butylcalix[4]arene bridged binuclear zinc(II) phthalocyanine [J].
Ceyhan, T ;
Altindal, A ;
Özkaya, AR ;
Erbil, MK ;
Salih, B ;
Bekaroglu, Z .
CHEMICAL COMMUNICATIONS, 2006, (03) :320-322
[9]  
Chuburu F, 2003, EUR J ORG CHEM, V2003, P1050
[10]  
CORNILS B, 2000, CATALYSIS Z CONCISE