(N-(2-Hidroksi-1-Naftaliden) Histidin) Schiff Bazinin Sentezi ve Kristal Yapı Analizi

Year 2006, Volume: 2 Issue: 2, 99 - 106, 01.06.2006

İffet Şakıyan Yusuf Özcan Semra İde

Abstract

Keywords

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(N-(2-Hidroksi-1-Naftaliden) Histidin) Schiff Bazinin Sentezi ve Kristal Yapı Analizi

Abstract

[N-(2-hidroksi-1-naftaliden)histidin] Schiff baz sentezlenerek yap s , IR, UV, 1H NMR spektroskopi metodlar ve Xortorombik ve P212121 uzay grubuna sahiptir. Kristalografik parametreleri ise a=6.133(5), b=7.168(5), c=33.639(5)Å , V=1478.8(2) Å3 birim hücre bilgilerini içerir. Ayd nlat lan yap n n do rulu unun bir ölçüsü olan R faktörleri ise R=0.0394 , wR=0.0784 olarak belirlenmi tir. Bu tip Schiff bazlar sahip olduklar tautomerik formlara ba l olarak fotokromik veya termokromik karakter gösterirler. Daha önceki çal mam zda inceledi imiz treonin Schiff baz nda gözlenen enol-imin tautomerli inin aksine histidin Schiff baz n n kat fazda daha çok keto-amin tautomerli ini tercih etti i görülmü tür. Molekül içi hidrojen ba [ N-Hketo-amin formundaki yük da l m na ba l olarak kuvvetli naftaliden grubundan azot atomuna proton transferinin oldu unu göstermektedir

Keywords

Histidin Schiff baz , Hidroksinaftaldehit, X-I nlar kristalografi

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