| Symbol | | | imine | bipy. | ionic (Coord.) | H2O lattice (Coord.) | | | |
| EDH4 | 3263 | 2839 | 1651 | — | — | — | — | — | — | 1608 | PDH4·4H2O | 3253 | 2750 | 1631 | — | — | 3448–3417 | — | — | — | 1604 | MPDH4·MeOH | 3251 | 2985 | 1670 | — | — | — | — | — | — | C1 | — | 2860 | 1654 | 1519 | — | (3150, 767, 651) | 420 | 370 | — | 2760 | 1608 | C2 | — | 2950 | 1640 | 1500 | — | 3400 (3250, 775, 660) | 460 | 350 | — | 1610 | C3 | — | 2900 | 1658 | 1570 | — | 3444 | 474 | 385 | 297a | 1604 | 254b | C4 | — | 2800 | 1643 | 1543 | — | (3356, 771, 729) | 470 | 385 | 340a | 2750 | 1604 | C5 | — | 2819 | 1651 | 1570 |
1111, 1083, 1037 | — | 470 | 333 | — | 2746 | 1608 | C6 | — | 2950 | 1660 | 1570 | (1093, 1040) | 3580 (3240, 750, 675) | 550 | 341 | — | 2800 | 1610 | C7 | — | 2750 | 1653 | 1580 | — | 3750 (3300, 770, 650) | 490 | 405 | 312a | 1610 | 241b | C8 | — | 2980 | 1640 | 1560 | — | (3240, 775, 655) | 560 | 395 | 325a | 2870 | 1610 | 270b | C9 | — | 2951 | 1655 | 1573 | — | — | 478 | 358 | — | 2839 | C10 | — | 2980 | 1630 | 1590 | — | 3550 | 490 | 400 | — | C11 | — | 2823 | 1651 | 1570 | — | 3456 | 489 | 389 | — | 2754 | 1608 | C12 | — | 2950 | 1645 | 1550 | — | 3700 (3250, 690, 640) | 450 | 322 | 304a | 2800 | 1600 | 250b | C13 | — | 2960 | 1660 | 1550 | — | (3300, 770, 640) | 560 | 343 | 2850 | 1610 | C14 | — | 2750 | 1639 | 1570 | 1103, 1050 | — | 459 | 393 | 1604 | C15 | — | 2800 | 1620 | 1550 | (1091, 1050) | 3600 (3380, 771, 740) | 510 | 400 | |
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