SYNTHESIS AND INVESTIGATION OF COORDINATION COMPOUNDSOF Co(II) ION WITH 2-HYDROXY-1-NAPHTHALDEHYDE AND 1,2-PHENYLENEDIAMINE

N.A. Izatillayev; F.B. Eshkurbonov; P.J. Tojiyev; J.A.Bakirov; A.A. Ashurova; S.B. Eshkurbonov; R.I.Abdullaeva; A.Kh. Rakhimov; N.Kh. Karshiyev

doi:10.5281/zenodo.21466707

Authors

N.A. Izatillayev Termez State University of Engineering and Agrotechnology Author
F.B. Eshkurbonov Termez State University of Engineering and Agrotechnology Author
P.J. Tojiyev Termiz State Pedagogical Institute Author
J.A.Bakirov Termez University of Economics and Service Author
A.A. Ashurova Termez State University of Engineering and Agrotechnology Author
S.B. Eshkurbonov Termez University ofEconomics and Service Author
R.I.Abdullaeva Termez State University of Engineering and Agrotechnology Author
A.Kh. Rakhimov Denau Institute of Entrepreneurship and Pedagogy Author
N.Kh. Karshiyev Denau Institute of Entrepreneurship and Pedagogy Author

DOI:

https://doi.org/10.5281/zenodo.21466707

Keywords:

2-hydroxy-1-naphthaldehyde, 1,2-phenylenediamine, cobalt (II) chloride hexahydrate, alcohol, complex, ligand, Hirshfeld.

Abstract

A new metal complex compound with the composition [Co(2-hnaph)2(1,2-phen)2]∙Cl-∙C2H5OH was
synthesized by the interaction of 2-hnaph(2-hydroxy-1-naphthaldehyde), 1,2-phen (1,2-phenylenediamine),and CoCl2∙6H2O in ethyl alcohol solutions. The composition, molecular and crystal structures of this metal
complex compound were investigated using differential scanning calorimetry (DSC), IR spectroscopy, and X-ray diffraction analysis (XRD). DSC analysis revealed that the thermal decomposition of the organic component in the complex varies, beginning at 75°C and ending in the temperature range of 370°C. A reaction occurs between the oxygen ofthe carbonyl group in the aldehyde form of 2-hnaph and the amino (NH2)
groups of 1,2-phen, resulting in the release of one water molecule (>C=O +-NH2→ >C=N-+ H2O). Analysis of two-dimensional fingerprint region plots revealed that H...O/O...H, H...H, and H...C/C...H interactions make the greatest contribution to the Hirshfeld surface. In the complex compound, H...H interactions account for 47.2%, H...C/C...H for 34.4%, and H...Cl/Cl...H for 9.2%, which is the expected state for molecules dominated by oxygen atoms. The complex compound contains H...H (47.2%), H...C/C...H (34.4%), and H...Cl/Cl...H (9.2%),which is the expected state for molecules dominated by oxygen atoms.

Author Biographies

N.A. Izatillayev, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz, Uzbekistan
F.B. Eshkurbonov, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz, Uzbekistan
P.J. Tojiyev, Termiz State Pedagogical Institute

Termiz State Pedagogical Institute, Termez, Uzbekistan
J.A.Bakirov, Termez University of Economics and Service

Termez University ofEconomics and Service, Termez, Uzbekistan
A.A. Ashurova, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz, Uzbekistan
S.B. Eshkurbonov, Termez University ofEconomics and Service

Termez University ofEconomics and Service, Termez, Uzbekistan
R.I.Abdullaeva, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz, Uzbekistan
A.Kh. Rakhimov, Denau Institute of Entrepreneurship and Pedagogy

Denau Institute of Entrepreneurship and Pedagogy, Denau, Uzbekistan
N.Kh. Karshiyev, Denau Institute of Entrepreneurship and Pedagogy

Denau Institute of Entrepreneurship and Pedagogy, Denau, Uzbekistan

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