Novel transformation of [(η¹-C₅H₅)₂SnFe(CO)₄]₂: the crystal structure of [{(C₅H₅)Fe(CO)₂}₂Sn₂Fe₃(CO)₉]

[{Fe(CO)3}4{SnI}6I4]2−: The First Bimetallic Adamantane‐Like Cluster

“…[13] According to FT-IR spectroscopy, three different CO vibrations can be resolved for 1 and 2 (Table 1, Figure 2). Corresponding to the CÀO distances, the CO vibrations are in a similar wavenumber range as observed for Fe(CO) 5 . Thus, bonding situation and valence state of iron 2À can be assumed to be similar to Fe(CO) 5 .…”

“…Corresponding to the CÀO distances, the CO vibrations are in a similar wavenumber range as observed for Fe(CO) 5 . Thus, bonding situation and valence state of iron 2À can be assumed to be similar to Fe(CO) 5 . Altogether, bond lengths and angles in 1 and 2 are very similar (see the Supporting Information); this indicates that the adamantane-like [{Fe(CO) 3 6 I 4 ] 2À cluster, as expected, is less influenced by the cation or the crystal structure.…”

“…Hence, the carbonyl cluster in 1 and 2 can be also rational- Table 1). The mean C À O distances of 113 pm (1) and 116 pm (2) are very comparable to Fe(CO) 5 (115 pm; see the Supporting Information). [13] This holds for the Fe À C distances (175(1)-181(1) pm) as well (Fe(CO) 5 with 179 pm).…”

“…The mean C À O distances of 113 pm (1) and 116 pm (2) are very comparable to Fe(CO) 5 (115 pm; see the Supporting Information). [13] This holds for the Fe À C distances (175(1)-181(1) pm) as well (Fe(CO) 5 with 179 pm). [13] According to FT-IR spectroscopy, three different CO vibrations can be resolved for 1 and 2 (Table 1, Figure 2).…”

“…The Fe À Sn distances in the [{Fe(CO) 3 } 4 A C H T U N G T R E N N U N G {SnI} 6 I 4 ] 2À cluster in 1 and 2 range from 254.4(1) to 257.2(1) pm (Figure 1, see the Supporting Information) and match well with literature data of known FeÀSn clusters (247-273 pm). [4][5][6][7]9] The FeÀSn distances of the adamantane-like Fe 4 Sn 6 substructure are, furthermore, in a typical range of iron stannides, such as Fe 3 Sn 2 (268-280 pm), FeSn (265-270 pm), or FeSn 2 (279 pm). [10] The Sn À I distances of the terminal iodine atoms are found to be 273.5(1) to 275.3(1) pm.…”