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The packing type is determined by the MFM angle around the bridging fluorine atom . In ( MF5 ) 4 tetramers , a close packing of the F atoms is cubic at MFM 180 ° and hexagonal at the MFM value sufficiently different from 180 ° .
The packing type is determined by the MFM angle around the bridging fluorine atom . In ( MF5 ) 4 tetramers , a close packing of the F atoms is cubic at MFM 180 ° and hexagonal at the MFM value sufficiently different from 180 ° .
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NQR frequencies v of axial ( dashed line ) and equatorial ( solid line ) chlorine atoms in ( MC15 ) 2 as a function of bridging halogen frequencies . Empty circles are axial and filled circles are equatorial atoms .
NQR frequencies v of axial ( dashed line ) and equatorial ( solid line ) chlorine atoms in ( MC15 ) 2 as a function of bridging halogen frequencies . Empty circles are axial and filled circles are equatorial atoms .
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A sharp increase in the bridging halogen frequencies as compared to the terminal frequencies is caused by a pr - electron density increase due to a weaker p1 - dr bonding between the bridging atoms and the metal .
A sharp increase in the bridging halogen frequencies as compared to the terminal frequencies is caused by a pr - electron density increase due to a weaker p1 - dr bonding between the bridging atoms and the metal .
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