Untitled

Abstract

Synthesis, spectroscopy, and crystal structures of [Cu(ca 2 en) 2 ]ClO 4 (1) and [Cu(ca 2 en)(PPh 3 ) 2 ]ClO 4 (2) (ca 2 en N,N'-bis(trans-cinnamaldehyde)ethylenediimine) are reported. Compound 1 crystallizes in the orthorhombic space group Pbca, with a 12.5647 (7), b 21.8203(11), c 27.992(2) ä, V 7674.3(7) ä 3 , Z 8. Compound 2 crystallizes in the triclinic space group P1 ≈ , with a 13.0540(11), b 14.2935(13), c 14.9863(13) ä, a 84.130(2), b 69.761(2), g 87.749(2)8, V 2609.8(4) ä 3 , Z 2. The coordination polyhedron about the Cu I center in the two complexes is best described as a distorted tetrahedron. The 1 H-NMR and electronic spectra of these complexes are also reported and discussed. The cyclic voltammetry of the complexes indicate a quasireversible redox behavior for complex 1 (E 1/2 0.51 V). However, complex 2 displays an irreversible oxidation wave at 0.91 V. A weak emission is observed for complex 2 in CHCl 3 at room temperature.

Crystal Structure of Di-.MU.-iodo-bis[N,N'-bis(trans-cinnamaldehyde)-phenylenediimine]copper(I)

“…[1][2][3] The structures and spectral properties of metal complexes with bidentate Schiff-base ligands have been elegantly studied by Amirnasr and coworkers. [1][2][3][4] In the present work, we report on the results of the reaction of CuI with the bidentate ligand ca2ph, to form a double-nuclear Schiff-base complex of [(ca2ph)Cu(µ-I)2Cu(ca2ph)] (Fig. 1).…”

Unusual coordination of tetraphenylborate to silver(I): synthesis and X-ray crystal structure of the complex N,N'-bis[3-(2-nitrophenyl)allylidene]ethane-1,2 diamine(tetraphenylborato)silver(I)

“…[7][8][9] + , has been reported. [10][11][12][13][14][15][16][17][18][19] In the present work, we report the synthesis and characterization of the new complex [Ag(nca 2 en)(BPh 4 )] (1), as well as its molecular structure determined from single crystal X-ray diffraction analysis.…”

Synthesis and characterization of [Cu(Phca2en)(PPh3)X] (X=Cl, Br, I, NCS, N3) complexes: crystal structures of [Cu(Phca2en)(PPh3)Br] and [Cu(Phca2en)(PPh3)I]

“…In our ongoing studies on the synthesis, structural and spectroscopic characterization of copper(I) complexes with conjugated diimine ligands and the effects that this conjugation may have on their absorption and emission properties [19], we report here the synthesis and characterization of a new series of [Cu(Phca 2 en)(PPh 3 )X] complexes, where Phca 2 en is a Schiff base and X is Cl (1), Br (2), I (3), NCS (4) or N 3 (5), (Scheme 1). The crystal and molecular structures of (2) and (3) are determined from single-crystal data.…”