Table 1.
Analytical data on compounds 3–5 (M=Ge, Sn, Pb).
|
|
3 |
4 |
5 |
|---|---|---|---|
|
d(C−P) [pm] |
177.0(2)–177.3(2) |
176.5(4)–176.8(5) |
174.3(10)–175.4(10) |
|
d(P−M) [pm] |
229.6(1)–230.2(1) |
249.2(2)–249.9(2) |
258.0(3)–258.2(3) |
|
∠(C‐P‐M) [°] |
104.8(1)–105.7(1) |
104.1(2)–105.8(2) |
103.3(4)–105.6(3) |
|
∠(P‐M‐P) [°] |
87.4(1) |
85.8(3) |
84.6(1) |
|
δ(31P) [ppm}] |
145.2 |
121.4 |
116.8 |
|
1 J M−P[Hz] |
– |
1334 |
1673 |
|
δ(13C) CNHC [ppm] |
191.3 |
192.3 |
186.3 |
|
First absorption maxima UV/Vis [nm] |
542.5 |
554.0 |
569.0 |