تهیه و تعیین ساختار بلوری ترکیب باز شیف (E)-4-methoxy-N-(4-hydroxybenzylidene)aniline

نویسندگان

1 دانشگاه گلستان

2 انستیتو فیزیک ASCR،

چکیده

باز شیف جدید  (E)-4-methoxy-N-(4-hydroxybenzylidene)aniline از واکنش بین 4-هیدروکسی بنزآلدهید و 4-متوکسی آنیلین در حلال متانول و دمای ºC50 تهیه شد و به کمک روش­های تجزیه عنصری و طیف­سنجی FT-IR مورد شناسایی قرار گرفته است. ساختار بلوری این ترکیب به کمک تکنیک پراش پرتو ایکس شناسایی شد. این ترکیب به­صورت سیستم اورتورومبیک و گروه فضایی  Pbcn متبلور می­شود. داده های ساختار بلوری این ترکیب به شرح زیر است:

a = 22.3813(5)               b = 10.7477(2)               c = 9.3623(2) Å             V = 2252.08(8) Å3

Z = 8                      µ = 0.73 mm−1                    R = 0.03

طول پیوند ایمینی N1 = C7 برابر (14) 2839/1 آنگستروم که مشابه طول پیوندهای دوگانه می­باشد. مولکول این ترکیب مسطح نبوده و دارای زوایه دوسطحی (32) 968/58 درجه بین دو حلقه فنیل  است. در این ترکیب پیوند هیدروژنی از نوع O∙∙∙H-C وجود داشته که زنجیر یک بعدی را تشکیل می­دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Synthesis and crystal structure of Schiff-base compound (E)-4-methoxy-N- (4-hydroxybenzylidene) aniline

چکیده [English]

New Schiff-base compound (E)-4-methoxy-N-(4-hydroxybenzylidene) aniline has been synthesized from the reaction of 4-hydroxybenzaldehyde with 4-methoxyaniline in methanol at 50ºC, and has been characterized by using elemental analysis and FT-IR spectroscopy. The crystal structure of the title compound has been determined by single crystal X-ray diffraction study. The title compound crystallizes in the orthorhombic, space group Pbcn with unit cell parameters a = 22.3813(5), b = 10.7477(2), c = 9.3623(2) Å, V = 2252.08(8) Å3, Z = 8 and R = 0.03. The N1 = C7 imine bond length of 1.2839(14) Å is typical of a double bond. The molecule of the title compound is non planar and the dihedral angle between the two phenyl rings is 58.97 (32)º. There is a strong intermolecular hydrogen bond of the O∙∙∙H-C type forming one-dimensional chain.

کلیدواژه‌ها [English]

  • Schiff-base
  • crystal structure
  • one-dimensional chain
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