Coordination Compounds 2 Question 64
####66. Write the IUPAC name of the compound $K _2\left[Cr(NO)(CN) _4\left(NH _3\right)\right]$. Spin magnetic moment of the complex $\mu=1.73 BM$. Give the structure of anion.
$(2003,4 M)$
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Solution:
- The spin-only magnetic moment $(\mu)$ of the complex is $1.73 BM$. It indicates that nucleus of complex, chromium ion has one unpaired electron. So, the ligand NO is unit positively charged. $K _2\left[Cr(NO)(CN) _4\left(NH _3\right)\right]$ potassium amminetetracyanonitrosoniumchromate (I)
$Cr(I)$ “under influence of strong ligand field”.
