Table 2 Selected As and Cr XPS peaks of prepared materials

From: Coordination chemistry of 2D and layered gray arsenic: photochemical functionalization with chromium hexacarbonyl

Entry

Sample

As 3p3/2

As 3d5/2

Cr 2p3/2

Ratio of As 3p3/2 peaks

1

1.5 eq., UV

142.6

–a

575.6

1:1

  

144.4

   

2

0.1 eq., UV

143.2

–a

575.6

5:1

  

145.1

   

3

0.1 eq., no UV

141.1 (As)

41.7 (As)

–b

–c

   

44.9 (As2O3)

  

4

Gray As (blank)

–a

41.7 (As)

–b

–c

   

44.8 (As2O3

  
  1. aNot measured
  2. bNot detected in significant amount
  3. cNo complex observed
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