Synthesis, XRD structure and properties of diaqua(p-toluidine-N,N-di-3-propionato)copper(II) dihydrate {[}Cu(p-Tdp)(H2O)(2)]center dot 2H(2)O / Skorik YA,Romanenko GV,Gomes CAR,Neudachina LK,Vshivkov AA // POLYHEDRON. - 2002. - V. 21, l. 27-28. - P. 2719-2725.

ISSN/EISSN:

0277-5387 / нет данных

Type:

Article

Abstract:

The copper(II) complex {[}Cu(p-Tdp)(H2O)(2)].2H(2)O, where p-Tdp is the anion of p-toluidine-N,N-di-3-propionic acid (or N,N-di(2-carboxyethyl)-p-toluidine), has been synthesized and characterized by X-ray diffraction. Three crystallographically independent {[}Cu(p-Tdp)(H2O)(2)] molecules have a similar structure. The Cu atoms have a square pyramidal environment (4+1) with a small trigonal bipyramidal distortion. The ortho-H atom of the benzene ring blocks up the sixth coordination position of the Cu polyhedron. The basal plane is formed by the donor atoms of the tridentate ligand and by the water molecule (average bond length Cu-N 2.03, Cu-O 1.93, Cu-O-w 2.00 Angstrom), the apex is occupied by another water molecule (Cu-O-w 2.27 Angstrom). The Cu atoms are located 0.20-0.30 Angstrom out of the mean planes of the four basal atoms towards the apical O-w atom. The IR and electronic absorption spectra of p-Tdp and the title compound have been described. UV-Vis reflectance spectra shows that the complex has the same square pyramidal geometry in the crystal state and in solution. The protonation constants of the ligand log K-1 = 6.87(2), log K-2 = 3.75(2), log K-3 = 2.57(2) and stability constants log KCuH(p-Tdp) = 2.13(5), log KCu(p-Tdp) = 6.38(3) were determined by pH-titration at 25.0 degreesC and I = 0.1 M KNO3. (C) 2002 Elsevier Science Ltd. All rights reserved.

Author keywords:

Idp-type ligand; N,N-di(2-carboxyethyl)-p-toluidine; p-toluidine-N,N-di-3-propionic acid; square pyramidal copper(II) complexes; crystal structures FORMING 6-MEMBERED RINGS; CRYSTAL-STRUCTURE; COPPER(II) COMPLEXES; MOLECULAR-STRUCTURE; LIGANDS; IONS

DOI:

10.1016/S0277-5387(02)01256-1

Web of Science ID:

ISI:000179808400010

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	DEC 15
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Article-Number	PII S0277-5387(02)01256-1
Keywords-Plus	FORMING 6-MEMBERED RINGS; CRYSTAL-STRUCTURE; COPPER(II) COMPLEXES; MOLECULAR-STRUCTURE; LIGANDS; IONS
Research-Areas	Chemistry; Crystallography
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Crystallography
ResearcherID-Numbers	Skorik, Yury/A-8128-2008 Gomes, Carlos Alberto Rocha/H-3829-2017
ORCID-Numbers	Gomes, Carlos Alberto Rocha/0000-0002-3708-9366 Romanenko, Galina/0000-0001-8852-2759
Number-of-Cited-References	42
Usage-Count-Since-2013	4
Journal-ISO	Polyhedron
Doc-Delivery-Number	625GH