Electronic Requirement of Condensed Polyhedral Boranes - mno Rule

Electronic Requirement of Condensed Polyhedral Boranes-mno Rule 

Yet another condensation mode, namely, single-vertex-sharing condensation, which leads to sandwich-type structures, is unknown with boron-only skeleton, whereas structures where the shared atom is a larger main group atom or transition 

Cu(C2B9Hii)2 here, the mno rule demands 2 + 23 + 1 = 26 pairs, whereas 27 are available. The extra two electrons will occupy the ej MO and, as expected, Jahn-Tellar distortion takes place, reducing the antibonding interactions [32], 

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Electronic Requirement of Condensed Polyhedral Boranes - mno Rule 127... 

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