1451-1458<span style="font-size:11.0pt;mso-bidi-font-size:
10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:calibri;="" mso-bidi-font-family:"times="" roman";mso-ansi-language:en-gb;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">M<span style="font-size:11.0pt;
mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-bidi-font-family:"times="" roman";mso-ansi-language:="" en-gb;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">ononuclear copper(II)
complex of the Schiff
base, 2-methoxy-6-(3-morpholinopropyl-iminomethyl)
phenol,
[Cu(HL)2](ClO4)2].H2O
(1) has been synthesized and
characterized by elemental analysis and different spectroscopic
techniques. The structure of (1) is
confirmed by single crystal X-ray diffraction analysis. The complex (1) crystallizes in the monoclinic space
group P21/n. The crystal structure of
the mononuclear complex exhibits two Schiff base ligands bound to the copper
atom and two perchlorate ions as non-coordinating species. Both the ligands in
(1) are zwitterions where nitrogen
atom of the morpholine ring is protonated. Fluorescence spectral study shows
that HL displays an emission band at 535 nm on excitation at 418 nm. The
presence of Cu2+ ion in complex (<b style="mso-bidi-font-weight:
normal">1) quenches its emission intensity. DFT and TDDFT calculations have
been carried out to investigate the spectral transitions.</span
