Keywords
7-yodo-8-gidroksixinolin-5-sulfokislota
kobalt(II)
koordinatsion birikma
IQ- spektroskopiya
O
N-xelat
sulfonat
metal ioni. 1.
How to Cite
Abstract
Mazkur maqolada 7-yodo-8-gidroksixinolin-5-sulfokislota (Ferron, C₉H₆INO₄S) va kobalt(II) xlorid geksagidrat (CoCl₂·6H₂O) o‘rtasidagi kompleks hosil bo‘lish jarayoni tadqiq qilindi. Ferron suv–etanol (1:1) aralashmasida eritilib, CoCl₂·6H₂O eritmasi bilan pH 5,5 muhitda reaksiyaga kiritildi. Reaksiya aralashmasini 40,5 °C da quritish pechida sekin bug‘latish usulida 14–17 kun davomida bug’latildi natijada och pushti rangli, kubsimon shaklli kristallar olindi; reaksiya unumi 77,3 % ni tashkil qildi. Organik ligand va olingan kompleksning 4000–600 sm⁻¹ diapazondagi IQ spektrlari solishtirildi. Spektrogrammalardagi aniq pik qiymatlari asosida xinolin halqasining C=N va C=C sohasidagi siljishlar, fenolik C–O tebranishlarining o‘zgarishi hamda kompleksda suvga xos keng O–H yutilishining paydo bo‘lishi aniqlandi. Ushbu o‘zgarishlar Ferronning Co(II) markaziga O,N-donor atomlari orqali koordinatsiyalanishi haqidagi taxminni qo‘llab- quvvatlaydi. SO₃⁻ guruhining 1042 sm⁻¹ atrofidagi signali deyarli saqlanib qolganligi sababli uning koordinatsiyadagi ishtiroki IQ ma’lumotlari bilan qat’iy tasdiqlanmadi. Kompleksning taxminiy tarkibi [Co(Ferron)₂(H₂O)₂] modeli sifatida taklif qilishim mumkin.References
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