dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T15:30:09Z | |
dc.date.available | 2014-05-20T15:30:09Z | |
dc.date.created | 2014-05-20T15:30:09Z | |
dc.date.issued | 2005-06-28 | |
dc.identifier | Polyhedron. Oxford: Pergamon-Elsevier B.V., v. 24, n. 9, p. 1086-1092, 2005. | |
dc.identifier | 0277-5387 | |
dc.identifier | http://hdl.handle.net/11449/39588 | |
dc.identifier | 10.1016/j.poly.2005.03.043 | |
dc.identifier | WOS:000229863900013 | |
dc.identifier | 8534138813417161 | |
dc.identifier | 0000-0003-1574-681X | |
dc.description.abstract | The low-weight Pd(II) coordination polymers [(N(3))(HL)Pd {Pd(3)(mu-N(3))(mu-L)(5)}10(mu-L)(2)Pd(L)(HL)]{L = Pz(-) (1); mPz(-) (2), IPz(-)(3)} and [(N(3))(HPz)Pd{Pd(6)(mu-N(3))(2)(mu-PZ)(5)(mu-L)(5)}(10)(mu-L)(2)Pd(Pz)(HPz)] {L = mPz(-) (4), dmPz(-) (5); IPz(-) (6)} {L = pyrazolate (Pz(-)), 4-methylpyrazolate(mPz(-)), 4-iodopyrazo late (IPz(-)), 3,5-dimethylpyrazolate (dmPz(-))} have been prepared in this work. IR spectra clearly indicated the exobidentate nature of pyrazolato ligands as well the end-on coordination mode of the azido group. The molecular weight determinations by osmometry indicated that the species have a low degree of polymerization (n = 10). NMR experiments showed two pyrazolate environments in a 2:1 ratio, being assigned to the six-membered ring Pd(mu-L)(2)Pd and the Pd(mu-N(3))(mu-L)Pd metallocycle, respectively. UV-visible spectroscopy gave further evidences for the oligomeric structures of 1-6. Some alternative structures for the isostructural polymers have been suggested. (c) 2005 Elsevier Ltd. All rights reserved. | |
dc.language | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation | Polyhedron | |
dc.relation | 2.067 | |
dc.relation | 0,472 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | pyrazole | |
dc.subject | palladium(II) | |
dc.subject | azide | |
dc.subject | coordination polymer | |
dc.subject | self-assembly | |
dc.subject | supramolecular chemistry | |
dc.title | Low-weight coordination polymers derived from the self-assembly reactions of Pd(II) pyrazolyl compounds and azide ion | |
dc.type | Artículos de revistas | |