Synthesis, characterisation and thermal properties of bis{3-(2-amino-benzylimino)-pentan-2-one oximato}cobalt(III) saccharinate monohydrate complex

Yıl 2018, Cilt: 20 Sayı: 1, 121 - 131, 17.07.2018

Hasene Mutlu Gençkal

https://doi.org/10.25092/baunfbed.356617

Öz

In this work,
[Co(HL')₂](sac)_·H₂O was obtained from the
reaction of cobalt(II) chloride with 1-(2-ethyl-1,2,3,4-tetrahydro-quinazolin-2-yl)-ethanone oxime (HL) within the presence of Na(sac) (sac: saccharinate). The new complex was
characterized by elemental analysis, spectral methods (UV-Vis., FT-IR, ¹H-NMR,
¹³C-NMR ve LC-MS) and thermal analysis
(TG-DTA).  The obtained results show that
the ligand undergoes a ring-opening reaction upon formation of the complex and
the chain tautomer acts as  N,N,N-donor.
The sac anion remains outside the coordination sphere as complementary ion in
the cationic complex of the coordination of Co(III) ion and two HL' ligands.

Anahtar Kelimeler

1-(2-Ethyl-1 2 3 4-tetrahydro-quinazolin-2-yl)-ethanone oxime, cobalt(III) complex, saccharinate

Bis{3-(2-amino-benzilimino)-pentan-2-on oksimato}kobalt(III) sakkarinat monohidrat kompleksinin sentezi, karakterizasyonu ve termal özellikleri

Öz

Bu çalışmada, Na(sac) (sac: sakkarinat) varlığında
kobalt(II) klorür ile 1-(2-etil-1,2,3,4-tetrahidro-kinazolin-2-il)-etanon oksimin
(HL)
tepkimesinden [Co(HL')₂](sac)_·H₂O
kompleksi elde edildi.  Bu yeni kompleksin
yapısal aydınlatması elementel analiz, spektroskopik yöntemler (UV-Vis., FT-IR,
¹H-NMR, ¹³C-NMR ve LC-MS) ve teermal analiz yöntemleri
(TG-DTA) ile gerçekleştirildi.  Elde
edilen sonuçlar kompleks oluşumu sırasında ligandın halka açılma tepkimesine
uğradığını ve zincir tautomerinin bir N,N,N-verici olarak davrandığını
göstermektedir.   Co(III) iyonu ile iki HL' ligandının koordinasyonundan oluşan bu katyonik
komplekste, sac anyonu tamamlayıcı iyon olarak koordinasyon küresinin dışında
yer almaktadır.

Anahtar Kelimeler

1-(2-Etil-1 2 3 4-tetrahidro-kinazolin-2-il)-etanon oksim, kobalt(III) kompleksi, sakkarinat

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