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[求助] 关于高斯ONIOM计算时, “ bonded-to“这个参数的使用问题

求高人指点:
      高斯ONIOM分层计算时,需要指定界面的低层( Low layer)原子与高层(High layer)的哪一个原子成键(bonded-to参数来设定),我发现高斯test例子中就指定了High layer的一个原子与Low layer的某个原子成键。而我模拟的是High layer的两个原子与Low layer的一个原子成键,这种情况如何来指定,输入文件如何设定呢?
     看了一下gaussian manual中分子系统设定时的bonded-to参数:”The 'bonded-to' parameter specifies which atom the current atom is to be bonded to during the higher-level calculation portion. If it is omitted, Gaussian will attempt to identify it automatically“。如果我不设定”bonded-to“参数,高斯是否会根据键长判断出High layer的两个原子都与Low layer的某个原子都成键呢?
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