- Design, XRD/HSA-interactions, spectral, thermal, Solvatochromism and DNA-binding of two [Cu(phen)(triene)]Br2 complexes: Experimental and DFT/TD-DFT investigations
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Two dicationicCu(II) complexes of [Cu(phen)(NNN)]Br2 (1-2) general formula [phen = 1,10-phenanthroline, NNN = diethelenetriamine (dien) (1) and dipropylenetriamine (dipn)(2)], have been synthesized in very good yields. The two complexes were characterizedvia UV-vis., CHN-EA, MS, FT-IR, thermal, and X-ray crystallographic techniques. XRD data for 1 showed a distorted square pyramidal Cu(II) ions geometry center with three uncoordinated water molecules. TGA were performed to evaluate the interactions strength and found to support the XRD molecular interactions results. The time-dependent density functional theory (TD-DFT) and electron transfer processes were modeled, and consequently the absorption maxima around 610 and 280 nm were attributed to d–d and Phen(π)→Phen(π?) transitions. Positive Gutmann'ssolvatochromismbehavior of both complexes have been recorded. Furthermore, the ability of the two complexes for DNA binding was evaluatedvia absorption studies in the visible region showing high Kb constant values.
- Fuqha, Muheeb,Awwadi, Firas F.,Haddad, Salim F.,Al-Zaqri, Nabil,Alharthi, Fahad A.,Suleiman, Mohammed,Zarrouk, Abdelkader,Boshaala, Ahmed M.,Warad, Ismail
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- Syntheses, characterization and optical properties of some copper(I) halides with 1,10-phenanthroline ligand
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The hydrothermal reactions of CuX2 or CuX with phen (1,10-phenanthroline) have resulted in the syntheses of eight compounds 1-8. In these, 1:1 adducts of CuX/phen are reported: ionic [Cu(PhBn)2] [CuX2] (X = Cl 1, Br 2) and dimer [Cu2I2(phen)] 3; the trinuclear clusters [Cu3X3(phen)2] (X = Br 5, I 7) were first prepared and the structures can be best described as 1:1 adducts of dimers and CuX; the chain compounds 6 and 8 belong to the same series with the formula [CuX2L] (L = organic ligand), but the chain arrangement is different; the structure of 4 is yet being refined. Compounds 1-8 have a high thermal stability. The third-order nonlinear optical properties of compounds 5, 6 and 8 were investigated and all exhibit a reverse saturable absorption (α2 > 0) and self-defocusing performance (n 2 0).
- Yu, Jie-Hui,Lue, Zheng-Liang,Xu, Ji-Qing,Bie, Hai-Ying,Lu, Jing,Zhang, Xiao
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p. 940 - 945
(2007/10/03)
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