Table 1.
Selected bond lengths (Å) and angles (°) for complexes 1–6; (μ‐H)=bridging hydride and Ht=terminal hydride.
|
Complex |
1 |
2 |
3 |
4 |
5 |
6 |
|---|---|---|---|---|---|---|
|
M−(μ‐H) |
– |
2.37(2) |
2.30(3) |
2.68(3) 3.04(3) |
1.88(2) 1.89(2) |
– |
|
Al−(μ‐H) |
– |
1.57(2) |
1.66(3) |
1.54(3) 1.57(3) |
1.60(2) 1.61(2) |
– |
|
Al−Ht |
1.57(2) |
1.53(2) |
1.56(3) |
– |
– |
– |
|
M−Al |
– |
3.6082(9) |
3.7112(8) |
3.498(3) |
2.598(2) |
– |
|
Al−N |
1.879(2) 1.885(1) 1.889(1) |
1.861(2) 1.876(2) |
1.588(1) 1.860(1) |
1.857(2) 1.876(2) |
1.852(2) 1.864(1) |
1.879(6)–1.893(3) |
|
N‐Al‐N |
109.10(6) 110.70(6) 111.79(6) |
117.54(7) |
118.62(6) |
119.0(1) |
122.63(7) |
107.6(2)–112.0(2) |
|
M‐(μ‐H)‐Al |
– |
131(1) |
138(1) |
94(1) 108(1) |
95.8(8) 95.9(9) |
– |