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該光譜最安全的解讀為含氧羰基有機物,最強支持為酯類或碳酸酯類結構,而非明確歸屬於碳酸二乙酯本身。關鍵證據是1722 cm-1的強羰基譜帶,加上1274、1125和1076 cm-1的多重C-O伸縮特徵,以及2923 cm-1附近的脂肪族C-H吸收。雖然頂部譜庫匹配為碳酸二乙酯,但檢索置信度實際為零,且無直接參考文獻或緊密對應的文獻證據確認該特定身份。
建議的下一步: Reacquire the FTIR spectrum with full baseline-corrected intensity data and a wider interpretive review of the 1800-650 cm-1 region to better resolve the carbonyl and C-O pattern. Check specifically for ester versus carbonate differentiation by examining the exact shape and relative intensity of the 1274, 1125, and 1076 cm-1 bands. Inspect the 3100-3000 cm-1 and 1600-1500 cm-1 regions for aromatic C-H and ring bands to test whether an aromatic benzoate-type ester is present. If the sample is liquid or extractable, confirm by GC-MS or LC-MS to distinguish Diethyl carbonate from other low-molecular-weight esters or carbonate-containing compounds.
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