CH2 X 3B1 - Methylene Radical
Molecular Parameters for CH2
| Parameter a |
(000) State |
Ref. |
(010) State |
Ref. |
| ν0 (cm-1) |
|
|
963.09866(41) |
82033 |
| A (cm-1) |
73.05775(11) |
82034 |
184.122 63(82) |
| B (cm-1) |
8.415 172(76) |
8.362 16(15) |
| C (cm-1) |
7.219 272(45) |
7.092 84(20) |
| ΔK (cm-1) b |
1.991 049(47) |
23.969 b |
| ΔNK (cm-1) |
-0.019 660(27) |
-0.078 89(14) |
| ΔN (cm-1) |
0.000 301 3(34) |
0.000 162(18) |
| δN (cm-1) |
0.1012(12) x 10-3 |
0.1012 x 10-3 c |
| ΦK (cm-1) |
0.0 |
1.52 b |
| ΦKN (cm-1) |
-0.001 941 7(21) |
0.0 |
| ΦNK (cm-1) |
0.1281(186) x 10-4 |
-4.671(57) x 10-4 |
| ΦN (cm-1) |
0.251(59) x 10-6 |
0.78(58) x 10-6 |
| φN (cm-1) |
0.195(30) x 10-6 |
0.0 |
| D (cm-1) |
0.778 42(14) |
0.795 60(48) |
| E (cm-1) |
0.039 906(38) |
0.035 40(53) |
| εaa (cm-1) |
0.000 446(78) |
0.003 52(54) |
| εbb (cm-1) |
-0.005 148(18) |
-0.004 70(23) |
| εcc (cm-1) |
-0.004 106(27) |
-0.004 58(21) |
| aFC [MHz] |
-20.26(51) |
|
| Taa [MHz] |
39.7(17) |
| Tbb [MHz] |
-20.2(19) |
a Parameters not given were fixed at zero. The numbers in
parentheses are one standard deviation from the least-squares fit in units of
the last quoted digit.
b ΔK
and ΦK were fixed at
values determined from the semi-rigid bender model.
c δN was
fixed at its ground (000) state value.
Molecular Parameters for 13CH2
| Parameter a |
(000) State |
(010) State |
Ref. |
| ν0 (cm-1) |
|
959.1674(2) |
83049 |
| A (cm-1) |
72.627 b |
181.234 23(143) |
| B (cm-1) |
8.415 767(67) |
8.370 93(76) |
| C (cm-1) |
7.208 087(390) |
7.076 65(73) |
| ΔK (cm-1) |
2.583 b |
23.657 b |
| ΔNK (cm-1) |
-0.019 66 c |
-0.078 89 c |
| ΔN (cm-1) |
0.2569(156) x 10-3 |
0.162 x 10-3 c |
| δN (cm-1) |
0.1569(156) x 10-3 |
0.3948(307) x 10-3 |
| ΦK (cm-1) |
0.127 b |
1.50 b |
| ΦKN (cm-1) |
-0.194 17 x 10-2 c |
0 |
| ΦNK (cm-1) |
0.1281 x 10-4 c |
-0.4671 x 10-3 c |
| ΦN (cm-1) |
0.251 x 10-6 c |
0.78 x 10-6 c |
| φN (cm-1) |
0.195(30) x 10-6 c |
0 |
| D (cm-1) |
0.780 05(130) |
0.797 67(37) |
| E (cm-1) |
0.041 76(53) |
0.038 39(137) |
| εaa (cm-1) |
0.0446 x 10-2 c |
0.352 x 10-2 c |
| εbb (cm-1) |
-0.5148 x 10-2 c |
-0.470 x 10-2 c |
| εcc (cm-1) |
-0.4106 x 10-2 c |
-0.458 x 10-2 c |
| aFC (cm-1) |
0.7955(185) x 10-2 |
0.7330(209) x 10-2 |
| Taa (cm-1) |
-0.2173(748) x 10-2 |
-0.2771(448) x 10-2 |
a Parameters not given were fixed at zero. The numbers in
parentheses are one standard deviation from the least-squares fit in units of
the last quoted digit.
b These parameters were fixed at values determined from a fit to
non-rigid bender calculations for 13CH2 by Jensen et
al. [82032].
c These parameters were fixed to 12CH2 values.
CD2 X 3B1 - Methylene Radical
Molecular Parameters for the (000) and (010) Vibrational Levels of
CD2 in its Ground Electronic State
| Parameter |
(000) State a |
(010) State b |
Ref. |
| ν0 (cm-1) |
|
752.3795(4) |
84028 |
| A (cm-1) |
37.786 829(60) |
70.455 24(38) |
 (B+C) (cm-1) |
3.962 159(12) |
3.930 017(27) |
| (B-C) (cm-1) |
0.267 57(10) |
0.3029(46) |
| ΔK (cm-1) |
0.560 228(16) |
4.991 843(60) |
| ΔNK (cm-1) |
-0.497 53(79) x 10-2 |
-0.019 590(62) |
| ΔN (cm-1) |
0.092 42(63) x 10-3 |
0.1052(52) x 10-3 |
| δK (cm-1) |
0.2783(50) x 10-2 |
1.71(23) x 10-2 |
| δN (cm-1) |
0.2231(23) x 10-4 |
0.232(18) x 10-4 |
| ΦK (cm-1) |
0.0196 c |
0.278 c |
| ΦKN (cm-1) |
-0.2433(19) x 10-3 |
-2.3749(66) x 10-3 |
| ΦNK (cm-1) |
-0.189(18) x 10-5 |
-0.189 x 10-5 d |
| ΦN (cm-1) |
0 e |
0 e |
| D (cm-1) |
0.776 466(93) |
0.789 35(24) |
| E (cm-1) |
0.040 580(65) |
0.037 27(24) |
| εaa (cm-1) |
0.282(36) x 10-3 c |
0.585(90) x 10-3 c |
| (εbb+εcc) (cm-1) |
-0.2342(19) x 10-2 c |
-0.2420(48) x 10-2 c |
| (εbb-εcc) (cm-1) |
0.262(18) x 10-3 |
0.28(8) x 10-3 |
a From a fit to the previous far-infrared LRM data
[83050] with the
addition of the measurements of the 523 ← 514
transition.
b From a fit to ν2-band diode-laser measurements
[83055] and the
data of [84028].
For both states, magnetic g values were fixed at theoretical values,
and the numbers in parentheses are one standard deviation from the
least-squares fit expressed units of the last quoted digit.
c Fixed at a value determined from the energy levels given by
Bunker and Jensen
[83048].
d Fixed at the ground-state value.
e This parameter and all others not listed were fixed at zero.
