Quantum interference scattering of aligned molecules:: Bonding in O4 and role of spin coupling

被引：102

作者：

Aquilanti, V ^{[1
]}

Ascenzi, D

Bartolomei, M

Cappelletti, D

Cavalli, S

Vítores, MD

Pirani, F

机构：

[1] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy

[2] Univ Perugia, Ist Tecnol Chim, I-06125 Perugia, Italy

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.82.69

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Molecular beam experiments on collisions between oxygen molecules were performed at low energy and high angular resolution to permit observation of the "glory" interference effect. A novel technique for aligning the rotational angular momentum of the colliding molecules is exploited. Analysis of total scattering cross section data yields for the O-2-O-2 bond an energy of 1.65 +/- 0.08 kJ.mol(-1) for the most stable configuration (parallel molecules) at a distance of 0.356 +/- 0.007 nm. These results indicate that most of the bonding in the dimer comes from electrostatic (van der Weals) farces but chemical (spin-spin) contributions are not negligible. [S0031-9007(98)08079-X].

引用

页码：69 / 72

页数：4

共 34 条

[1] VELOCITY DEPENDENCE OF COLLISIONAL ALIGNMENT OF OXYGEN MOLECULES IN GASEOUS EXPANSIONS
AQUILANTI, V
ASCENZI, D
CAPPELLETTI, D
PIRANI, F
[J]. NATURE, 1994, 371 (6496) : 399 - 402
[2] Bond stabilization by charge transfer: The transition from Van der Waals forces to the simplest chemical bonds
Aquilanti, V
Cappelletti, D
Pirani, F
[J]. CHEMICAL PHYSICS LETTERS, 1997, 271 (4-6) : 216 - 222
[3] SCATTERING OF ROTATIONALLY ALIGNED OXYGEN MOLECULES AND THE MEASUREMENT OF ANISOTROPIES OF VAN-DER-WAALS FORCES
AQUILANTI, V
ASCENZI, D
CAPPELLETTI, D
FRANCESCHINI, S
PIRANI, F
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (15) : 2929 - 2932
[4] Scattering of aligned molecules.: The potential energy surfaces for the Kr-O2 and Xe-O2 systems
Aquilanti, V
Ascenzi, D
Cappelletti, D
de Castro, M
Pirani, F
[J]. JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (10) : 3898 - 3910
[5] ASCENZI D, 1998, THESIS U PERUGIA ITA
[6] Quantum-classical reaction path study of the reaction O(P-3)+O-3((1)A(1))->20(2)(X(3)Sigma(-)(g))
Balakrishnan, N
Billing, GD
[J]. JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (23) : 9482 - 9494
[7] STUDY OF THE INTERACTIONS OF ATOMIC AND MOLECULAR-OXYGEN WITH O-2 AND N-2 BY SCATTERING DATA
BRUNETTI, B
LIUTI, G
LUZZATTI, E
PIRANI, F
VECCHIOCATTIVI, F
[J]. JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (12) : 6734 - 6741
[8] A VAN-DER-WAALS INTERMOLECULAR POTENTIAL FOR (O2)2
BUSSERY, B
WORMER, PES
[J]. JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (02) : 1230 - 1239
[9] AN INTERMOLECULAR POTENTIAL FOR (O-2)2 INVOLVING O-2(1-DELTA-G)
BUSSERY, B
[J]. CHEMICAL PHYSICS, 1994, 184 (1-3) : 29 - 38
[10] Comparative studies of the lowest singlet states of (O2)2 including ab initio calculations of the four excited states dissociating into O2(1△g)+O2(1△g)
Bussery-Honvault, B
Veyret, V
[J]. JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (08) : 3243 - 3248

← 1 2 3 4 →