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. 2021 Apr 7;40(8):1042–1052. doi: 10.1021/acs.organomet.1c00042

Table 4. Comparison of Selected Bond Lengths (Å) and Angles (deg) of 7, [Li(THF)3]2[Fe2(CO)8] (Li-N),44 and [Na(DMF)3]2[Fe2(CO)8] (Na-N)43.

  7 [Li-N] [Na-N]
Fe–Fe 2.552(8) 2.551(1) 2.804(1)
Fe–Cbridged 1.951(4) 1.929(8)  
Cbridged–N/O 1.266(6) 1.216(9)  
Fe–Cterminal 1.838(5) 1.765(8) 1.781(2)
Cterminal–N/O 1.176(6) 1.164(1) 1.158(2)
Fe–Cterminal–N/O 170.7(4) 177.5(7) 176.8(2)