Anthony KERMAGORET - THESES ET MEMOIRES DE L'UDS

Chapitre V
isolated as a green powder and complexes 16, 18 and 19 as blue powders. The IR ν(C=N)
vibrations of uncoordinated oxazoline and coordinated oxazoline are at 1682 and 1627 cm -1 ,
respectively.
The IR spectrum of 17 suggested the coordination of both nitrogen atoms with an unique band
for ν(C=N) vibration at 1603 cm -1 .
The structure of 16 has been determined by X-ray diffraction and its structure is presented in
Figure 6 and selected bond distances and angles are given in Table 4.
Figure 6. ORTEP view of the structure of 16 in 16·0.5 C6H5CH3 with thermal ellipsoids
drawn at the 50% probability level.
Table 4. Selected bond distances and bond angles of 16
Bond distances (Å)
Co-N1 2.038(3) C7-O1 1.449(4)
Co-P 2.3581(11) O1-P 1.636(2)
Co-Cl1 2.2384(11) P-O3 1.612(2)
Co-Cl2 2.2397(11) O3-C15 1.441(4)
N1-C10 1.280(5) C15-C18 1.505(5)
C10-C7 1.509(5) C18-N2 1.251(5)
Bond angles (°)
N1-Co-P 92.93(9) N1-C10-C7 127.7(3)
N1-Co-Cl1 109.18(10) C10-C7-O1 109.8(3)
N1-Co-Cl2 108.38(10) C7-O1-P 123.6(2)
P-Co-Cl1 113.44(4) O1-P-O3 97.03(12)
P-Co-Cl2 112.95(4) P-O3-C15 132.1(2)
Cl1-Co-Cl2 117.06(4) O3-C15-C18 110.1(3)
Co-N1-C10 129.2(2) C15-C18-N2 126.7(3)
16