Abstract

A new polymorph of 3,4-dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano[3,2-c]chromen-2-one (pyranocoumarin) was studied by X-ray diffraction. The crystallographic parameters of the structure of C₂₀H₁₈O₄ are M = 322.34, sp. gr. C2/c, a = 23.542(1) Å, b = 8.4938(3) Å, c = 19.7804(8) Å, β = 125.977(3)°, Z = 8.

中文翻译：

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3,4-二氢-2-甲氧基-2-甲基-4-苯基-2H，5H-吡喃并[3,2-c] chromen-2-one的晶体结构

摘要

通过X射线衍射研究了一种新的3,4-二氢-2-甲氧基-2-甲基-4-苯基-2H，5H-吡喃并[3,2-c] chromen-2-one（吡喃香豆素）的多晶型物。C的结构的晶体学参数₂₀ ħ ₁₈ ö ₄是中号= 322.34，SP。gr。C 2 / c，a = 23.542（1）Å，b = 8.4938（3）Å，c = 19.7804（8）Å，β= 125.977（3）°，Z = 8。