New macrocyclic schiff base complexes incorporating a homopiperazine unit: Synthesis of some Co(II), Ni(II),Cu(II) and Zn(II) complexes and crystal structure and theoretical studies
Yükleniyor...
Dosyalar
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A new macrocyclic Schiff base ligand, L, was synthesized by condensation reaction of 1,4-bis(2-formylphenyl)homopiperazine and 1,4-diaminobutane in acetonitrile. The Schiff base ligand was characterized by using elemental analyses, FT-IR, H-1, C-13 NMR and mass spectroscopic techniques. The metal (II) complexes [ML], were synthesized from the reaction of MCl2 center dot nH(2)O (M: Co, Ni, Cu and Zn) with Schiff base ligand, L and characterized by elemental analyses and FT-IR. X-ray crystal structure of [CoLCl](+) distorted square pyramidal geometry with an N4Cl core, arising from coordination by the four donor nitrogen atoms from the macrocyclic framework and one Cl atom. It crystallizes triclinic space group, P-1 with a = 7.1777(1) angstrom, b = 11.0357 (2) angstrom, c = 15.1520(2) angstrom, V = 1183.14(3), Z = 2, D-c = 1.556 g cm(-3), mu (MoK alpha) = 0.156 mm(-1). Also, the bonding situation between the [MCl](+) and Ligand (L) fragments in [MLCl]ClO4 (M = Co(II), Ni(II), Cu(II), Zn(II)) complexes were carried out by energy-decomposition analysis (EDA). The results showed that there is an increasing trend in the case of Delta E-elstat of the complexes by changing the M from Co(II) to Zn(II). (C) 2016 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Homopiperazine, Macrocyclic schiff Base, Metal Complexes, X-ray Crystal Structure, Theoretical studies
Kaynak
Journal of Molecular Structure
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
1115
