# DZn

**Formula:**DZn**Molecular weight:**67.39**Information on this page:****Options:**

## Constants of diatomic molecules

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**
Data compilation copyright
by the U.S. Secretary of Commerce on behalf of the U.S.A.
All rights reserved.
**

**Data compiled by:** Klaus P. Huber and Gerhard H. Herzberg

Data collected through July, 1975

Symbol | Meaning |
---|---|

State | electronic state and / or symmetry symbol |

T_{e} | minimum electronic energy (cm^{-1}) |

ω_{e} | vibrational constant – first term (cm^{-1}) |

ω_{e}x_{e} | vibrational constant – second term (cm^{-1}) |

ω_{e}y_{e} | vibrational constant – third term (cm^{-1}) |

B_{e} | rotational constant in equilibrium position (cm^{-1}) |

α_{e} | rotational constant – first term (cm^{-1}) |

γ_{e} | rotation-vibration interaction constant (cm^{-1}) |

D_{e} | centrifugal distortion constant (cm^{-1}) |

β_{e} | rotational constant – first term, centrifugal force (cm^{-1}) |

r_{e} | internuclear distance (Å) |

Trans. | observed transition(s) corresponding to electronic state |

ν_{00} | position of 0-0 band (units noted in table) |

State | T_{e} | _{e} | _{e}x_{e} | _{e}y_{e} | B_{e} | _{e} | _{e} | D_{e} | _{e} | r_{e} | Trans. | _{00} |
---|---|---|---|---|---|---|---|---|---|---|---|---|

C ^{2}^{+} | (41110) | 1313 H | 24 | C X V | 41204 H | |||||||

↳Khan, 1962 | ||||||||||||

A ^{2}_{r} | 1 | [3.736] 2 | [1.31E-_{4}] 3 | [1.520_{2}] | A X V | 23391.5 4 Z | ||||||

↳Fujioka and Tanaka, 1937; Veseth, 1971 | ||||||||||||

X ^{2}^{+} | 0 | [1072] H | (28) | [3.349_{7}] 5 | [1.240E-_{4}] | [1.6054] |

### Notes

1 | A_{0} = +342.82 Veseth, 1971, as recalculated in Veseth, 1971 from the data of Fujioka and Tanaka, 1937. |

2 | Rotational constants recalculated in Veseth, 1971 from data in Fujioka and Tanaka, 1937.
-type doubling _{fe}(^{2}_{1/2}) ~ +0.170~(J+1/2) - ,.., see Fujioka and Tanaka, 1937. |

3 | H_{0} = +1._{6}E-8. |

4 | missing note |

5 | Spin doubling _{12} = +0.131(N+1/2), see Fujioka and Tanaka, 1937. |

6 | Short extrapolation for the ground state. |

7 | All lines diffuse; predissociation. |

8 | All observed vibrational levels of B ^{2} show perturbations by
A ^{2} levels with v l.
The rotational constants in Stenvinkel, 1936 are satisfactorily reproduced by B_{v} = 3.304 -
0.033(v+1/2) + 0.00060(v+1/2)^{2} - 0.00024_{5}(v+1/2)^{3} except for v=1, 2, and 3 all
of which are close to the intersection of the two potential curves. |

9 | A_{0} = +342.66 Veseth, 1971, A_{1} = +342.06 Veseth, 1971 [as recalculated in Veseth, 1971 from the data of Stenvinkel, 1936]. |

10 | Rotational constants for v=0 and 1 as recalculated in Veseth, 1971 from the data of Stenvinkel, 1936.
-type doubling _{fe}(^{2}_{1/2}, v=0) ~ 0.26_{9}(J+1/2) - ...,
and in ^{2}_{3/2} [see Fujioka and Tanaka, 1937 and Stenvinkel, 1936]. |

11 | D_{1} = 4.46E-4; H_{0} = +1.3_{4}E-8, H_{1} = +0.9E-8. g_{J}'=1/2
(average of F_{1} and {F_{2}}) relative to N"=0.
A different definition was used in Stenvinkel, 1936. |

12 | _{e}z_{e} = -0.4339. Very rapid convergence.
The constants (from Stenvinkel, 1936) lead to a discrepancy of nearly 6 cm^{-1} for
the highest observed level, v=5. |

13 | Spin doubling, v_{12}(v=0) = +0.254(N+1/2) - ... [ Stenvinkel, 1936, see also Veseth, 1970],
decreasing rapidly with increasing v. |

14 | _{v}= -0.03765(v+1/2)^{2} + 0.00897(v+1/2)^{3} - 0.001479(v+1/2)^{4}. |

15 | D_{1}(E-4 cm^{-1})= 5.00,
D_{2}(E-4 cm^{-1})= 5.49,
D_{3}(E-4 cm^{-1})= 6.58,
D_{4}(E-4 cm^{-1})= 8.40,
D_{5}(E-4 cm^{-1})= 10.5.
Also higher order terms, see Stenvinkel, 1936. |

16 | In Ar matrix at 4 K Knight and Weltner, 1971. |

17 | From the value for ZnH. |

## References

**Go To:** Top, Constants of diatomic molecules, Notes

**
Data compilation copyright
by the U.S. Secretary of Commerce on behalf of the U.S.A.
All rights reserved.
**

**Khan, 1962**

Khan, M.A.,
*New band systems of ZnH and ZnD in the far ultra-violet region*,
**Proc. Phys. Soc. London**, 1962, 80, 599. [all data]

**Fujioka and Tanaka, 1937**

Fujioka, Y.; Tanaka, Y.,
*Molecular spectra of zinc hydride and deuteride*,
**Sci. Pap. Inst. Phys. Chem. Res. Jpn.**, 1937, 32, 143-156. [all data]

**Veseth, 1971**

Veseth, L.,
*Corrections to the spin-orbit splitting in ^{2}«PI» states of diatomic molecules*,

**J. Mol. Spectrosc.**, 1971, 38, 228. [all data]

**Stenvinkel, 1936**

Stenvinkel, G.,
**Dissertation - Ref. to earlier work are reviewed in this paper**, Stockholm, 1936, 1. [all data]

**Veseth, 1970**

Veseth, L.,
*Modifications of the doublet energy formulae of a diatomic molecule necessitated by the rotational stretching*,
**J. Phys. B:**, 1970, 3, 1677. [all data]

**Knight and Weltner, 1971**

Knight, L.B., Jr.; Weltner, W., Jr.,
*Hyperfine interaction, chemical bonding, and isotope effect in ZnH, CdH, and HgH molecules*,
**J. Chem. Phys.**, 1971, 55, 2061. [all data]

## Notes

**Go To:** Top, Constants of diatomic molecules, References

- Data from NIST Standard Reference Database 69:
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