Sruld vovt doup Peat-Pu Product Froduct 2 CIMegdienSeNIz 84 a2 80 80 55 Seoo -watc wroke wtion op 45 Hle-r 40 mo- Accto ne, CRAan e cln 2500 Wawenumbers (cm-1) 35 4000 3500 3000 2000 1500 1000 500 3500 300 2500 2000 1500 1000 NTranemttance 2972.31 THE 1454 50 1472.33 9L'LEr 1410.66 1300.47 1247.18 1144.18 1105.89 1030.38 1007 31 974.77 19.10 06 pC6 NEc=5 205841 'LOCI 033.0e.23 820 49 0.5 0.8 [(Me5dien)Co(SCN)2] A [(Me5dien)CoCI2] 0.4 0.6 0.3 0.4 0.2 02 0.1 500 700 900 s00 700 900 Wavelength (nm) Wavelength (nm) sqv sqv

INORGANIC Chemistry

Starting product was [(Me₅dien)CoCl₂] and reacted with NaSCN to produce  [(Me₅dien)Co(SCN)₂]

Using the graphs attached, the IR data tells you that the binding mode is N coordination. How does the IR data agree (or disagree) with the peak shifts (Uv-Vis spect)

IR

Product 1, [(Me₅dien)CoCl₂]

29041.04, 2812.76, 2761.62 cm^-1 (carbon bond)

1457.35 cm^-1 (CH₂)

1263.91 cm^-1 (possibly C-N stretch)

Product 2, [(Me₅dien)Co(SCN)₂]

2968.54-2870.67 cm^-1 (C-C)

2059.41 cm^-1 (N=C=S)

1470.28 cm^-1 (CH₂)

Uv-vis

[(Me₅dien)CoCl₂]

Peak A:  531.8 nm, 0.722 Abs

Peak B: 609.7 nm, 0.666 Abs

[(Me₅dien₎Co(SCN)₂]

Peak A: 510.20 nm, 0.357 Abs

Peak B: 608.20 nm, 0.401 Abs