Anthony KERMAGORET - THESES ET MEMOIRES DE L'UDS

Chapitre VI
Single crystals of 13 suitable for X-ray diffraction have been obtained by slow
diffusion of heptane on a toluene solution. An ORTEP view of the molecular structure of 13
is shown in Figure 1 and selected bond distances and bond angles are given in Table 1. The
metal centre adopts a slightly distorted square-planar geometry as shown by the P(2)-Ni-P(1)
and O(1)-Ni-C(10) bond angles of 172.90(2) and 174.58(6), respectively (Table 1). The
metal-ligand distances (Table 1) are comparable with those found in SHOP-type
complexes. 31,32,58,59 The structure of 13 revealed a specific orientation of the ether group with
its oxygen atom pointing toward the hydrogen atom of the C(1)H(1) group α to the
phosphorus atom (Fig. 1). This orientation confirms the hydrogen bonding interaction
between these two atoms with a calculated distance H(1)···O(1) of 2.28 Å (Table 2). A second
intramolecular hydrogen bonding interaction H(4)···O(1) is observed with a calculated
distance of 2.34 Å (Table 2).
Fig. 1 ORTEP view of the molecular structure of 13 with ellipsoids drawn at the 50%
probability level.
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