STRONG MILLS-NIXON EFFECT IN BIPHENYLENE

被引:28
作者
ECKERTMAKSIC, M
HODOSCEK, M
KOVACEK, D
MAKSIC, ZB
POLJANEC, K
机构
[1] BORIS KIDRIC INST CHEM, YU-61000 LJUBLJANA, YUGOSLAVIA
[2] UNIV ZAGREB, FAC NAT SCI & MATH, YU-41000 Zagreb, YUGOSLAVIA
[3] JOZEF STEFAN INST, YU-61111 LJUBLJANA, YUGOSLAVIA
关键词
D O I
10.1016/0009-2614(90)80048-I
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Structural features of biphenylene are studied by semiempirical and ab initio SCF methods employing STO-3G, 3-21G and 6-31G basis sets. The latter gives results in very good agreement with the X-ray data. The distribution of bond distances reveals the presence of a strong Mills-Nixon effect which has been questioned many times in similar systems. The origin of the highly pronounced Mills-Nixon effect is analyzed. It is found that it arises due to concerted and synergistic action of σ- and Π-electrons which leads to Mills-Nixon type of bond fixation. © 1990.
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页码:49 / 52
页数:4
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