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The nuclear quadrupole interaction of  187 W(β - ) 187 Re in W(VI)-EDTA complexes at room temperature was determined by time differential perturbed angular correlations (TDPAC) to be V Q  = 1270(8) MHz with an asymmetry parameter η= 0.403(4). While the coordination geometry of the Mo(VI)- EDTA complex is known, there appears to be none for the W-analogue. The rather similar asymmetry parameters for the  187 W(β - ) 187 Re in W(VI)-EDTA complex and for the  99 Mo(β - ) 99 Tc in Mo(VI)- EDTA complex, determined previously, supports the idea that the coordination geometries in the Moand W-complexes are similar

The Nuclear Quadrupole Interaction of 187 W(β – ) 187 Re in W(VI)-EDTA Complexes