. 2016 Oct 7;8(2):1316–1328. doi: 10.1039/c6sc02390h

Table 5. M–E distances [Å] of M-1–M-3 (from X-ray data and DFT calculations) and (Me₃Si)₃EM(donor)_n [E = C, Si, Ge; M = Li, Na, K] (from the Cambridge Crystallographic DataBase).

Comp.	M···E (X-ray)	M···E (calc.)	Comp.	M–E (X-ray) ^a	Elongation ^b [%]
Li-1	3.30	3.03	(Me₃Si)₃CLi	2.13	42
Na-1	3.23	3.18	(Me₃Si)₃CNa	2.48	28
K-1	3.32	3.34	(Me₃Si)₃CK	2.92	14
Li-2	3.92	3.74	(Me₃Si)₃SiLi	2.52	48
Na-2	4.00	3.94	(Me₃Si)₃SiNa	2.94	34
K-2	4.50	4.07	(Me₃Si)₃SiK	3.34	22
Li-3	—	3.88	(Me₃Si)₃GeLi	2.62	48
Na-3	4.05	4.01	— ^c	—	—
K-3	4.53	4.14	(Me₃Si)₃GeK	3.37	23

^aValues are taken from the Cambridge Crystallographic Database and only those structures with the shortest M–E bonds were selected.

^bPercent elongation of the E–M distance of M-1–M-3, derived from DFT from calculations, toward the E–M distance of (Me₃Si)₃EM, derived from the X-ray data.

^cNo X-ray data available.

Table 5. M–E distances [Å] of M-1–M-3 (from X-ray data and DFT calculations) and (Me3Si)3EM(donor) n [E = C, Si, Ge; M = Li, Na, K] (from the Cambridge Crystallographic DataBase).

Table 5. M–E distances [Å] of M-1–M-3 (from X-ray data and DFT calculations) and (Me₃Si)₃EM(donor)_n [E = C, Si, Ge; M = Li, Na, K] (from the Cambridge Crystallographic DataBase).