Table 1 Raman mode frequencies computed for reaction products and selected intermediates from reaction schemes in Fig. 4
From: In situ formation of catalytically active graphene in ethylene photo-epoxidation
Products | ||
|---|---|---|
Vibrational mode | VI (cm−1) | IX (cm−1) |
CH2 wag | 1025 | 1023, 1216 |
Ring stretch | 1125, 1147 | 1126, 1151 |
CH2 wag and ring stretch | 1170 | 1171 |
Ring stretch | 1279 | 1278 |
CH2 scissor | 1517, 1539 | 1536, 1553 |
C–H stretch | 3116, 3147, 3231 | 3155, 3162, 3254 |
H2O related | NA | 1654, 3373, 3749 |
Graphene related | 1344, 1586, 1662 | 1363, 1584, 1652 |
Intermediates | |||
|---|---|---|---|
Vibrational mode | IV (cm−1) | V (cm−1) | VII (cm−1) |
C–C/C–O stretch | 1106 | 1040 | 897, 1056 |
CH2 wag | 1157 | 1133, 1165 | 1093, 1326 |
CH2 wag | 1306, 1401 | 1264, 1286 | 1151, 1204 |
CH2 scissor | 1475 | 1415 | 1489 |
C–H stretch | 3023, 3160, 3295 | 3030, 3058, 3103 | 3065, 3176, 3333 |
Graphene related | 1340, 1576, 1653 | 1349, 1580, 1657 | 1365, 1581, 1664 |
