Table 3. Comparison of selected geometrical parameters (%, Å, °) for NiII and CuII complexes bearing the hep-H ligand.
Δ is the dihedral angle between the basal MO2N2 square plane and the pyridine ring.
| Ref. | R-factor | M—N | M—OH | M—O(R) | Δ | θ | φ |
|---|---|---|---|---|---|---|---|
| 1 | 1.80 | 2.102 (1) | 2.062 (1) | 2.083 (2) | 28.28 (4) | 81.9 (1) | 162.6 (1) |
| BOZJADa | 3.80 | 2.102 (2) | 2.065 (3) | 2.084 (3) | 28.4 (1) | 80.6 (3) | 163.4 (3) |
| HULYAOb | 3.22 | 2.073 (1) | 2.064 (1) | 2.085 (1) | 30.37 (6) | 78.7 (1) | 156.3 (1) |
| EJEZEZ c | 2.58 | 2.082 (1) | 2.089 (1) | 2.090 (1) | 30.88 (6) | 99.0 (1) | 346.8 (1) |
| FEFWIYd | 3.13 | 2.100 (2) | 2.088 (1) | 2.072 (2) | 30.4 (1) | 96.8 (2) | 349.7 (2) |
| FEFWIY01d | 3.05 | 2.090 (1) | 2.104 (1) | 2.064 (1) | 31.86 (8) | 95.9 (1) | 354.6 (2) |
| FEFWIY02d | 2.59 | 2.096 (1) | 2.085 (1) | 2.064 (1) | 30.51 (7) | 97.9 (1) | 346.1 (1) |
| BOZJOR a | 3.75 | 2.078 (2) | 2.096 (1) | 2.063 (2) | 37.6 (1) | 89.2 (2) | 175.3 (2) |
| BOZJUX a | 3.03 | 2.083 (1) | 2.114 (1) | 2.052 (1) | 35.43 (8) | 94.3 (1) | 352.5 (2) |
| BOZKAEa | 4.36 | 2.098 (2) | 2.096 (2) | 2.064 (2) | 29.9 (1) | 81.9 (2) | 160.4 (2) |
| RAJQOL e | 4.07 | 2.083 (2) | 2.057 (2) | 2.112 (2) | 31.9 (1) | 84.5 (2) | 167.7 (2) |
| 2 NABBEA01f | 1.9 | 2.025 (2) 1.988 (2) | 2.012 (2) 2.055 (1) | 2.380 (1) 2.298 (1) | 28.5 (1) 38.0 (1) | 79.2 (1) 87.8 (1) | 159.9 (1) 176.2 (1) |
| NABBEAg | 5.2 | 1.993 (4) 2.031 (4) | 2.070 (4) 2.016 (4) | 2.298 (4) 2.387 (4) | 37.5 (2) 28.8 (2) | 87.5 (3) 100.3 (4) | 175.9 (3) 340.6 (4) |
| HAYHASh | 2.8 | 2.032 (2) | 2.422 (1) | 1.982 (1) | 29.50 (7) | 81.9 (1) | 171.9 (1) |
| IREREDi | 4.04 | 2.017 (2) | 2.385 (2) | 2.025 (2) | 31.0 (1) | 94.4 (2) | 356.0 (2) |
| OJOBAQj | 2.35 | 2.009 (1) | 2.041 (1) | 2.312 (1) | 33.96 (4) | 98.6 (1) | 340.0 (1) |
| SOJGABk | 3.52 | 2.029 (2) | 2.428 (2) | 1.998 (1) | 25.97 (8) | 101.4 (2) | 346.6 (2) |
| UGAROKl | 3.44 | 2.021 (2) 2.030 (2) | 2.019 (2) 2.024 (2) | 2.357 (2) 2.346 (2) | 31.4 (1) 32.5 (1) | 95.9 (2) 80.6 (2) | 345.3 (2) 167.0 (2) |
Notes: (a) Trdin et al. (2015 ▸); (b) Hamamci et al. (2002 ▸); (c) Yilmaz et al. (2011 ▸); (d) Trdin & Lah (2012 ▸); (e) Çolak et al. (2017 ▸); (f) Zeghouan et al. (2016 ▸); (g) Zienkiewicz-Machnik et al. (2016 ▸); (h) Lapanje et al. (2012 ▸); (i) Pothiraja et al. (2011 ▸); (j) Yilmaz et al. (2003 ▸); (k) Caglar et al. (2014 ▸); (l) Yeşılel et al. (2009 ▸).