| You need a browser with JavaScript support in order to view the molecule in 3D |
|
Transitions — Left-clk & drag: Zoom; Right-clk: reset |
|
Frequency [wavenumbers] |
Wavelength [microns] |
Integrated cross-section [km/mol] |
Symmetry | Scaling factor |
|---|---|---|---|---|
| 3109 | 3.217 | 0 | AG | 0.9597 |
| 3109 | 3.217 | 61.33 | BU | 0.9597 |
| 3085 | 3.241 | 0 | AG | 0.9597 |
| 3085 | 3.241 | 0.7316 | BU | 0.9597 |
| 3078 | 3.249 | 0 | AG | 0.9597 |
| 3078 | 3.249 | 281 | BU | 0.9597 |
| 3078 | 3.249 | 75.05 | BU | 0.9597 |
| 3078 | 3.249 | 0 | AG | 0.9597 |
| 3076 | 3.251 | 0 | AG | 0.9597 |
| 3076 | 3.251 | 16.89 | BU | 0.9597 |
| 3069 | 3.259 | 0 | AG | 0.9597 |
| 3069 | 3.259 | 20.4 | BU | 0.9597 |
| 3064 | 3.264 | 0 | AG | 0.9597 |
| 3064 | 3.264 | 32.04 | BU | 0.9597 |
| 3063 | 3.265 | 7.598 | BU | 0.9597 |
| 3063 | 3.265 | 0 | AG | 0.9597 |
| 3062 | 3.266 | 0 | AG | 0.9597 |
| 3062 | 3.266 | 4.405 | BU | 0.9597 |
| 3061 | 3.267 | 0 | AG | 0.9597 |
| 3061 | 3.267 | 16.48 | BU | 0.9597 |
| 3060 | 3.268 | 0 | AG | 0.9597 |
| 3060 | 3.268 | 0.4194 | BU | 0.9597 |
| 3059 | 3.269 | 0 | AG | 0.9597 |
| 3059 | 3.269 | 12.19 | BU | 0.9597 |
| 3058 | 3.27 | 0 | AG | 0.9597 |
| 3058 | 3.27 | 15.2 | BU | 0.9597 |
| 1621 | 6.168 | 0 | AG | 0.9691 |
| 1621 | 6.17 | 292.9 | BU | 0.9691 |
| 1615 | 6.191 | 10.36 | BU | 0.9691 |
| 1614 | 6.196 | 0 | AG | 0.9691 |
| 1603 | 6.237 | 0 | AG | 0.9691 |
| 1599 | 6.252 | 18.16 | BU | 0.9691 |
| 1598 | 6.258 | 0 | AG | 0.9691 |
| 1595 | 6.268 | 12.37 | BU | 0.9691 |
| 1593 | 6.277 | 454.3 | BU | 0.9691 |
| 1593 | 6.279 | 0 | AG | 0.9691 |
| 1587 | 6.3 | 3.038 | BU | 0.9691 |
| 1586 | 6.305 | 0 | AG | 0.9691 |
| 1582 | 6.32 | 0 | AG | 0.9691 |
| 1582 | 6.322 | 30.73 | BU | 0.9691 |
| 1572 | 6.362 | 74.67 | BU | 0.9691 |
| 1571 | 6.367 | 0 | AG | 0.9691 |
| 1566 | 6.385 | 219.8 | BU | 0.9691 |
| 1563 | 6.398 | 0 | AG | 0.9691 |
| 1557 | 6.425 | 0 | AG | 0.9691 |
| 1549 | 6.455 | 0 | AG | 0.9691 |
| 1549 | 6.457 | 58.44 | BU | 0.9691 |
| 1539 | 6.499 | 143.6 | BU | 0.9691 |
| 1537 | 6.507 | 0 | AG | 0.9691 |
| 1529 | 6.54 | 128.3 | BU | 0.9691 |
| 1525 | 6.558 | 0 | AG | 0.9691 |
| 1518 | 6.588 | 15.7 | BU | 0.9691 |
| 1515 | 6.6 | 0 | AG | 0.9691 |
| 1503 | 6.652 | 72.41 | BU | 0.9691 |
| 1499 | 6.67 | 0 | AG | 0.9691 |
| 1498 | 6.676 | 8.345 | BU | 0.9691 |
| 1494 | 6.692 | 0 | AG | 0.9691 |
| 1489 | 6.716 | 120.3 | BU | 0.9691 |
| 1484 | 6.738 | 57.67 | BU | 0.9691 |
| 1482 | 6.748 | 0 | AG | 0.9691 |
| 1478 | 6.764 | 18.2 | BU | 0.9691 |
| 1476 | 6.774 | 0 | AG | 0.9691 |
| 1470 | 6.803 | 0 | AG | 0.9691 |
| 1467 | 6.817 | 0 | AG | 0.9691 |
| 1466 | 6.82 | 36.97 | BU | 0.9691 |
| 1460 | 6.85 | 0 | AG | 0.9691 |
| 1457 | 6.864 | 38.03 | BU | 0.9691 |
| 1450 | 6.894 | 10.05 | BU | 0.9691 |
| 1449 | 6.899 | 0 | AG | 0.9691 |
| 1448 | 6.906 | 12.89 | BU | 0.9691 |
| 1438 | 6.955 | 0 | AG | 0.9691 |
| 1438 | 6.956 | 5.44 | BU | 0.9691 |
| 1430 | 6.993 | 0 | AG | 0.9691 |
| 1427 | 7.006 | 9.181 | BU | 0.9691 |
| 1425 | 7.016 | 13.92 | BU | 0.9691 |
| 1424 | 7.024 | 0 | AG | 0.9691 |
| 1420 | 7.04 | 1.021 | BU | 0.9691 |
| 1417 | 7.058 | 0 | AG | 0.9691 |
| 1414 | 7.074 | 0 | AG | 0.9691 |
| 1413 | 7.077 | 108.4 | BU | 0.9691 |
| 1410 | 7.092 | 31.52 | BU | 0.9691 |
| 1407 | 7.105 | 0 | AG | 0.9691 |
| 1402 | 7.131 | 11.94 | BU | 0.9691 |
| 1401 | 7.139 | 0 | AG | 0.9691 |
| 1399 | 7.15 | 5.562 | BU | 0.9691 |
| 1398 | 7.153 | 0 | AG | 0.9691 |
| 1397 | 7.156 | 0 | AG | 0.9691 |
| 1393 | 7.177 | 0 | AG | 0.9691 |
| 1391 | 7.189 | 65.09 | BU | 0.9691 |
| 1388 | 7.205 | 0 | AG | 0.9691 |
| 1385 | 7.222 | 1.67 | BU | 0.9691 |
| 1381 | 7.24 | 1.004 | BU | 0.9691 |
| 1381 | 7.243 | 0 | AG | 0.9691 |
| 1376 | 7.268 | 0 | AG | 0.9691 |
| 1376 | 7.268 | 7.646 | BU | 0.9691 |
| 1372 | 7.29 | 0 | AG | 0.9691 |
| 1368 | 7.309 | 7.861 | BU | 0.9691 |
| 1367 | 7.314 | 0 | AG | 0.9691 |
| 1367 | 7.317 | 11.33 | BU | 0.9691 |
| 1360 | 7.352 | 1.115 | BU | 0.9691 |
| 1353 | 7.391 | 0 | AG | 0.9691 |
| 1350 | 7.409 | 24.57 | BU | 0.9691 |
| 1347 | 7.421 | 0 | AG | 0.9691 |
| 1347 | 7.422 | 37.63 | BU | 0.9691 |
| 1345 | 7.434 | 0 | AG | 0.9691 |
| 1342 | 7.45 | 90.05 | BU | 0.9691 |
| 1337 | 7.481 | 0 | AG | 0.9691 |
| 1330 | 7.517 | 51.69 | BU | 0.9691 |
| 1328 | 7.529 | 167.7 | BU | 0.9691 |
| 1323 | 7.557 | 107 | BU | 0.9691 |
| 1322 | 7.565 | 0 | AG | 0.9691 |
| 1316 | 7.601 | 0 | AG | 0.9691 |
| 1311 | 7.63 | 82.22 | BU | 0.9691 |
| 1306 | 7.659 | 0 | AG | 0.9691 |
| 1295 | 7.723 | 181.8 | BU | 0.9691 |
| 1292 | 7.738 | 0 | AG | 0.9691 |
| 1291 | 7.749 | 628.3 | BU | 0.9691 |
| 1281 | 7.804 | 0 | AG | 0.9691 |
| 1281 | 7.805 | 1070 | BU | 0.9691 |
| 1279 | 7.817 | 0 | AG | 0.9691 |
| 1259 | 7.945 | 0 | AG | 0.9691 |
| 1254 | 7.977 | 255.2 | BU | 0.9691 |
| 1253 | 7.98 | 0 | AG | 0.9691 |
| 1250 | 7.999 | 67.6 | BU | 0.9691 |
| 1242 | 8.049 | 3.886 | BU | 0.9691 |
| 1239 | 8.074 | 0 | AG | 0.9691 |
| 1230 | 8.129 | 239 | BU | 0.9691 |
| 1227 | 8.153 | 0 | AG | 0.9691 |
| 1221 | 8.188 | 268.5 | BU | 0.9691 |
| 1218 | 8.209 | 0 | AG | 0.9691 |
| 1213 | 8.242 | 4.387 | BU | 0.9691 |
| 1212 | 8.254 | 0 | AG | 0.9691 |
| 1197 | 8.352 | 214.9 | BU | 0.9691 |
| 1196 | 8.359 | 0 | AG | 0.9691 |
| 1192 | 8.393 | 35.33 | BU | 0.9691 |
| 1182 | 8.461 | 0 | AG | 0.9691 |
| 1180 | 8.478 | 28.2 | BU | 0.9691 |
| 1175 | 8.508 | 605.9 | BU | 0.9691 |
| 1175 | 8.51 | 0 | AG | 0.9691 |
| 1171 | 8.538 | 0 | AG | 0.9691 |
| 1169 | 8.554 | 121.3 | BU | 0.9691 |
| 1168 | 8.561 | 0 | AG | 0.9691 |
| 1164 | 8.591 | 349.5 | BU | 0.9691 |
| 1158 | 8.639 | 0 | AG | 0.9691 |
| 1151 | 8.69 | 0 | AG | 0.9691 |
| 1145 | 8.737 | 0 | AG | 0.9691 |
| 1144 | 8.74 | 65.83 | BU | 0.9691 |
| 1138 | 8.784 | 13.64 | BU | 0.9691 |
| 1131 | 8.843 | 17.92 | BU | 0.9691 |
| 1128 | 8.868 | 0 | AG | 0.9691 |
| 1119 | 8.939 | 9.328 | BU | 0.9691 |
| 1092 | 9.155 | 0 | AG | 0.9691 |
| 1087 | 9.202 | 18.7 | BU | 0.9691 |
| 1080 | 9.259 | 0 | AG | 0.9691 |
| 1079 | 9.267 | 20.3 | BU | 0.9794 |
| 1069 | 9.351 | 0 | AG | 0.9794 |
| 1058 | 9.451 | 0 | AG | 0.9794 |
| 1041 | 9.609 | 2.895 | BU | 0.9794 |
| 1040 | 9.618 | 0 | AG | 0.9794 |
| 1030 | 9.712 | 52.34 | BU | 0.9794 |
| 1017 | 9.828 | 0 | AG | 0.9794 |
| 993.5 | 10.07 | 2.955 | BU | 0.9794 |
| 983.3 | 10.17 | 0 | AG | 0.9794 |
| 982.4 | 10.18 | 11.03 | BU | 0.9794 |
| 967.1 | 10.34 | 0 | BG | 0.9794 |
| 967.1 | 10.34 | 0.077 | AU | 0.9794 |
| 964.2 | 10.37 | 0 | BG | 0.9794 |
| 964.2 | 10.37 | 0.0352 | AU | 0.9794 |
| 951.6 | 10.51 | 0.556 | AU | 0.9794 |
| 951.6 | 10.51 | 0 | BG | 0.9794 |
| 945.6 | 10.58 | 0 | BG | 0.9794 |
| 945.3 | 10.58 | 0.5133 | AU | 0.9794 |
| 938.1 | 10.66 | 0.3411 | BU | 0.9794 |
| 925.7 | 10.8 | 0 | AG | 0.9794 |
| 922.7 | 10.84 | 0.373 | BU | 0.9794 |
| 918.9 | 10.88 | 0 | AG | 0.9794 |
| 910.2 | 10.99 | 0.2092 | BU | 0.9794 |
| 902.2 | 11.08 | 186.7 | AU | 0.9794 |
| 902 | 11.09 | 0 | BG | 0.9794 |
| 895.2 | 11.17 | 0 | BG | 0.9794 |
| 894.2 | 11.18 | 20.13 | AU | 0.9794 |
| 888.3 | 11.26 | 0 | AG | 0.9794 |
| 883.8 | 11.32 | 6.119 | BU | 0.9794 |
| 878.1 | 11.39 | 21.34 | AU | 0.9794 |
| 875.9 | 11.42 | 0 | BG | 0.9794 |
| 868.9 | 11.51 | 0 | BG | 0.9794 |
| 866.5 | 11.54 | 34.61 | AU | 0.9794 |
| 862.9 | 11.59 | 0.678 | BU | 0.9794 |
| 855.1 | 11.69 | 0 | AG | 0.9794 |
| 847.9 | 11.79 | 0 | AG | 0.9794 |
| 846.5 | 11.81 | 11.88 | BU | 0.9794 |
| 842.4 | 11.87 | 0.44 | AU | 0.9794 |
| 839.8 | 11.91 | 0 | BG | 0.9794 |
| 835 | 11.98 | 0 | BG | 0.9794 |
| 834.6 | 11.98 | 7.75 | BU | 0.9794 |
| 832.8 | 12.01 | 23.21 | AU | 0.9794 |
| 805.8 | 12.41 | 0 | AG | 0.9794 |
| 802.5 | 12.46 | 0.0086 | AU | 0.9794 |
| 802 | 12.47 | 0 | BG | 0.9794 |
| 799.7 | 12.5 | 0 | AG | 0.9794 |
| 798 | 12.53 | 0 | BG | 0.9794 |
| 797.8 | 12.53 | 28.12 | AU | 0.9794 |
| 788.1 | 12.69 | 6.042 | BU | 0.9794 |
| 786.7 | 12.71 | 0 | BG | 0.9794 |
| 786.4 | 12.72 | 6.627 | AU | 0.9794 |
| 779.2 | 12.83 | 0 | AG | 0.9794 |
| 776.6 | 12.88 | 8.758 | BU | 0.9794 |
| 766.7 | 13.04 | 0 | AG | 0.9794 |
| 757.1 | 13.21 | 1.551 | AU | 0.9794 |
| 757 | 13.21 | 0 | BG | 0.9794 |
| 749.4 | 13.34 | 0 | AG | 0.9794 |
| 742.3 | 13.47 | 0 | AG | 0.9794 |
| 738.5 | 13.54 | 12.12 | BU | 0.9794 |
| 737.6 | 13.56 | 0.0051 | AU | 0.9794 |
| 737.4 | 13.56 | 0 | BG | 0.9794 |
| 727.7 | 13.74 | 1.565 | BU | 0.9794 |
| 722.5 | 13.84 | 0 | AG | 0.9794 |
| 722.4 | 13.84 | 0 | BG | 0.9794 |
| 722.4 | 13.84 | 1.357 | AU | 0.9794 |
| 720.8 | 13.87 | 0.0008 | AU | 0.9794 |
| 720.6 | 13.88 | 0 | BG | 0.9794 |
| 716.8 | 13.95 | 14.93 | BU | 0.9794 |
| 707.6 | 14.13 | 1.211 | AU | 0.9794 |
| 701.8 | 14.25 | 0 | BG | 0.9794 |
| 700.4 | 14.28 | 0 | AG | 0.9794 |
| 692.5 | 14.44 | 0 | BG | 0.9794 |
| 689.4 | 14.51 | 0 | AG | 0.9794 |
| 687.5 | 14.55 | 0.1467 | AU | 0.9794 |
| 676.6 | 14.78 | 0 | BG | 0.9794 |
| 674 | 14.84 | 0.6811 | BU | 0.9794 |
| 671 | 14.9 | 1.73 | AU | 0.9794 |
| 666.5 | 15 | 6.281 | AU | 0.9794 |
| 657.3 | 15.21 | 0.5504 | BU | 0.9794 |
| 657 | 15.22 | 0 | AG | 0.9794 |
| 652.2 | 15.33 | 0 | BG | 0.9794 |
| 643.5 | 15.54 | 0 | AG | 0.9794 |
| 638.9 | 15.65 | 0.2488 | BU | 0.9794 |
| 638.6 | 15.66 | 0 | BG | 0.9794 |
| 637.8 | 15.68 | 0.0662 | AU | 0.9794 |
| 635.3 | 15.74 | 0.5079 | BU | 0.9794 |
| 627 | 15.95 | 0 | AG | 0.9794 |
| 625.2 | 15.99 | 2.712 | BU | 0.9794 |
| 622.1 | 16.07 | 2.231 | AU | 0.9794 |
| 618.6 | 16.17 | 0 | BG | 0.9794 |
| 615.9 | 16.24 | 0 | AG | 0.9794 |
| 613.7 | 16.3 | 0 | BG | 0.9794 |
| 612.9 | 16.32 | 1.814 | BU | 0.9794 |
| 610.7 | 16.37 | 0.7658 | AU | 0.9794 |
| 602.1 | 16.61 | 0 | AG | 0.9794 |
| 601.2 | 16.63 | 0 | BG | 0.9794 |
| 599 | 16.69 | 9.816 | AU | 0.9794 |
| 597.5 | 16.74 | 0.8373 | BU | 0.9794 |
| 593.4 | 16.85 | 0 | BG | 0.9794 |
| 592.4 | 16.88 | 2.178 | AU | 0.9794 |
| 588.3 | 17 | 0 | BG | 0.9794 |
| 585.6 | 17.08 | 6.54 | BU | 0.9794 |
| 583 | 17.15 | 0 | BG | 0.9794 |
| 581.5 | 17.2 | 0.5626 | AU | 0.9794 |
| 580.5 | 17.23 | 0 | AG | 0.9794 |
| 578.6 | 17.28 | 0.0508 | AU | 0.9794 |
| 572.9 | 17.46 | 2.699 | BU | 0.9794 |
| 572.4 | 17.47 | 0 | BG | 0.9794 |
| 566.1 | 17.66 | 3.607 | AU | 0.9794 |
| 565.9 | 17.67 | 0 | AG | 0.9794 |
| 563.2 | 17.76 | 0 | BG | 0.9794 |
| 563.1 | 17.76 | 2.841 | AU | 0.9794 |
| 556.5 | 17.97 | 0.7453 | AU | 0.9794 |
| 551.1 | 18.14 | 1.145 | BU | 0.9794 |
| 550.3 | 18.17 | 0 | AG | 0.9794 |
| 543.1 | 18.41 | 1.356 | AU | 0.9794 |
| 540 | 18.52 | 3.838 | BU | 0.9794 |
| 538.3 | 18.58 | 0 | BG | 0.9794 |
| 537.3 | 18.61 | 0.474 | AU | 0.9794 |
| 536.9 | 18.62 | 0 | AG | 0.9794 |
| 526.9 | 18.98 | 0 | BG | 0.9794 |
| 521.5 | 19.18 | 2.962 | BU | 0.9794 |
| 519.4 | 19.25 | 0 | AG | 0.9794 |
| 512 | 19.53 | 12.49 | BU | 0.9794 |
| 511 | 19.57 | 0 | AG | 0.9794 |
| 503.8 | 19.85 | 0.1455 | AU | 0.9794 |
| 491.5 | 20.35 | 0 | BG | 0.9794 |
| 483.9 | 20.67 | 0 | BG | 0.9794 |
| 482.3 | 20.73 | 0 | AG | 0.9794 |
| 479 | 20.88 | 0.6472 | BU | 0.9794 |
| 475.3 | 21.04 | 0 | AG | 0.9794 |
| 475.1 | 21.05 | 0.0162 | BU | 0.9794 |
| 471.8 | 21.19 | 0.0579 | AU | 0.9794 |
| 465.7 | 21.47 | 0 | AG | 0.9794 |
| 457.6 | 21.85 | 0 | BG | 0.9794 |
| 450 | 22.22 | 0 | AG | 0.9794 |
| 438.7 | 22.79 | 3.714 | BU | 0.9794 |
| 435 | 22.99 | 0.1635 | AU | 0.9794 |
| 430.5 | 23.23 | 0 | BG | 0.9794 |
| 429.3 | 23.29 | 0.1569 | BU | 0.9794 |
| 421.4 | 23.73 | 0 | BG | 0.9794 |
| 416.2 | 24.02 | 0.0735 | AU | 0.9794 |
| 408.6 | 24.47 | 0 | BG | 0.9794 |
| 405 | 24.69 | 0.0883 | AU | 0.9794 |
| 397.7 | 25.14 | 0 | AG | 0.9794 |
| 395.8 | 25.26 | 0.0007 | AU | 0.9794 |
| 385.3 | 25.95 | 0.6005 | AU | 0.9794 |
| 380.4 | 26.29 | 0 | BG | 0.9794 |
| 378.1 | 26.45 | 2.703 | BU | 0.9794 |
| 370.4 | 27 | 0 | BG | 0.9794 |
| 366.8 | 27.26 | 0 | AG | 0.9794 |
| 366.8 | 27.27 | 0.6676 | AU | 0.9794 |
| 366.4 | 27.29 | 0 | BG | 0.9794 |
| 359.3 | 27.83 | 2.153 | BU | 0.9794 |
| 345.7 | 28.93 | 1.461 | AU | 0.9794 |
| 341 | 29.32 | 0 | BG | 0.9794 |
| 335.5 | 29.81 | 0.3959 | AU | 0.9794 |
| 334.4 | 29.91 | 0 | AG | 0.9794 |
| 327.6 | 30.53 | 5.263 | BU | 0.9794 |
| 326.4 | 30.64 | 0 | AG | 0.9794 |
| 326.3 | 30.64 | 0.0227 | AU | 0.9794 |
| 322 | 31.05 | 0 | BG | 0.9794 |
| 313.6 | 31.89 | 1.892 | AU | 0.9794 |
| 301.9 | 33.13 | 0 | BG | 0.9794 |
| 293.8 | 34.04 | 9.951 | BU | 0.9794 |
| 288.6 | 34.65 | 0 | BG | 0.9794 |
| 285.8 | 34.99 | 0 | BG | 0.9794 |
| 278.6 | 35.89 | 1.081 | BU | 0.9794 |
| 277.7 | 36.01 | 0 | AG | 0.9794 |
| 268 | 37.31 | 0 | BG | 0.9794 |
| 265.6 | 37.65 | 0.159 | AU | 0.9794 |
| 255.2 | 39.19 | 0 | BG | 0.9794 |
| 254 | 39.37 | 0.3736 | BU | 0.9794 |
| 243.2 | 41.12 | 1.988 | AU | 0.9794 |
| 232.7 | 42.97 | 0 | AG | 0.9794 |
| 224.7 | 44.5 | 0.0057 | AU | 0.9794 |
| 217.2 | 46.04 | 1.585 | AU | 0.9794 |
| 211.9 | 47.2 | 0 | BG | 0.9794 |
| 203.7 | 49.08 | 1.092 | AU | 0.9794 |
| 183.1 | 54.6 | 0 | AG | 0.9794 |
| 182.9 | 54.68 | 0 | BG | 0.9794 |
| 176.3 | 56.73 | 0 | BG | 0.9794 |
| 174.8 | 57.22 | 0.2228 | AU | 0.9794 |
| 160.8 | 62.17 | 0 | AG | 0.9794 |
| 147.4 | 67.84 | 0.0594 | AU | 0.9794 |
| 146.7 | 68.18 | 0 | BG | 0.9794 |
| 134.2 | 74.54 | 0.2921 | AU | 0.9794 |
| 127.9 | 78.19 | 0 | BG | 0.9794 |
| 117.3 | 85.29 | 0 | BG | 0.9794 |
| 113.2 | 88.37 | 7.114 | BU | 0.9794 |
| 97.52 | 102.5 | 1.247 | AU | 0.9794 |
| 86.73 | 115.3 | 0 | BG | 0.9794 |
| 73.7 | 135.7 | 0 | BG | 0.9794 |
| 66.94 | 149.4 | 0.05 | AU | 0.9794 |
| 63.85 | 156.6 | 0.1138 | AU | 0.9794 |
| 49.28 | 202.9 | 3.065 | AU | 0.9794 |
| 39.55 | 252.9 | 0 | BG | 0.9794 |
| 31.81 | 314.3 | 0 | BG | 0.9794 |
| 17.99 | 555.9 | 0.0087 | AU | 0.9794 |
| 12.93 | 773.6 | 0.1383 | AU | 0.9794 |
Note(s):
You are kindly asked to consider the following references for citation when using the database: