| Popis: |
The sign of the quadrupole coupling constant, e2qQ, has been determined for 119Sn in the following six compounds: [Mn(CO)5SnCl3], [Mn(CO)5SnCl2Me], [Fe(π-C5H5)(CO)2SnCl3], [Fe(π-C5H5)(CO)2SnBu3], [{Fe(π-C5H5)(CO)2}2SnCl2], and [{Fe(π-C5H5)(CO)2}2Sn(NCS)2]. It was found to be positive for all of the compounds except [Fe(π-C5H5)(CO)2SnBu3], which has a small negative value for e2qQ. In those compounds containing iron, the sign of e2qQ for 57Fe was also determined and found to be positive in each case. The nature of the bonding in these and similar compounds is discussed in relation to results obtained from other physical methods. |
