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In this theoretical survey, N‐heterocyclic Germylenes (NHGes; 1–13) are compared and contrasted at DFT. All singlet (s) and triplet (t) states of NHGes turn out as minima for showing no negative force constant on their energy surfaces. Yet, only s states appear as global minima. From thermodynamic view point, the scrutinized NHGes show singlet‐triplet energy gap (ΔEs–t) larger than that of VI and...
In order to make an efficient and accurate information resources purchase of our library, and determine whether existing information resources need to renew or deselect and whether it is necessary to start new recourses purchase, a rational evaluation on information resources need to be conducted. The paper establishes an evaluation index system which has 3 levels, and uses methods of Delphi and superiority...
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