VIBRATIONAL SPECTROSCOPIC AND THERMAL INVESTIGATIONS OF THE CYANO-BRIDGED POLYMERIC COMPLEXES WITH 3-AMINOMETHYLPYRIDINE

Authors : Dursun KARAAĞAÇ

Pages : 216-226

Doi:10.18038/estubtda.624414

View : 8 | Download : 7

Publication Date : 2019-09-26

Article Type : Research Paper

Abstract :Normal 0 21 false false false TR X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:`Normal Tablo`; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:``; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:8.0pt; mso-para-margin-left:0cm; line-height:107%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:`Calibri`,sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;} New cyano-bridged polymeric complexes formulated as [Coinsert ignore into journalissuearticles values(H 2 O);insert ignore into journalissuearticles values(ampy);Niinsert ignore into journalissuearticles values(CN); 4 ]∙H 2 O and [Niinsert ignore into journalissuearticles values(ampy); 2 Niinsert ignore into journalissuearticles values(CN); 4 ]∙H 2 O insert ignore into journalissuearticles values( ampy = 3-aminomethylpyridine : abbreviated henceforth as Co-Ni-ampy and Ni-Ni-ampy); have been obtained in powder form and characterized by vibrational insert ignore into journalissuearticles values(infrared and Raman); spectroscopy, thermal and elemental analyses. In previous study, structure of complex [Cdinsert ignore into journalissuearticles values(NH 3 );insert ignore into journalissuearticles values(ampy);Niinsert ignore into journalissuearticles values(CN); 4 ] n insert ignore into journalissuearticles values(Cd-Ni-ampy); was determined by single crystal X-ray diffraction methods. In this complex, the coordination environment of the Cdinsert ignore into journalissuearticles values(II); ions are distorted octahedral geometry, whereas around the Niinsert ignore into journalissuearticles values(II); center is pyramidal. The spectral features suggest that Cd-Ni-ampy with Co-Ni-ampy are similar to each other and the ampy ligand is coordinated to metal ions as bidentate ligand. In addition, complex Ni-Ni-ampy is similar in structure to the Hofmann type complexes and its structure consists of polymeric layers of │Ni–Niinsert ignore into journalissuearticles values(CN); 4 │ ∞ with the ampy ligand bounded to the nickelinsert ignore into journalissuearticles values(II); atom. Thermal stabilities and decomposition products of the complexes were investigated using TG, DTG and DTA curves in the temperature range of 30 – 700 °C in the static air atmosphere.
Keywords : Vibrational spectra, Tetracyanonickelate II, , 3 aminomethylpyridine, Cyano bridged complexes, Pyramidal