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Research Article

When is a reported air-stable PrIV complex not a PrIV complex? Answer: when it is PrIII

, ORCID Icon & ORCID Icon
Received 19 May 2024, Accepted 04 Jul 2024, Published online: 30 Jul 2024

Figures & data

Figure 1. Crystal structure of the PrIII complex [Pr2L6(H2O)2]n (symmetry code: *1 − X, 1 − Y, 1 − Z; #1 − X, −Y, 1 − Z; ^+X, 1 + Y, +Z). Hydrogen atoms were omitted for clarity.

Figure 1. Crystal structure of the PrIII complex [Pr2L6(H2O)2]n (symmetry code: *1 − X, 1 − Y, 1 − Z; #1 − X, −Y, 1 − Z; ^+X, 1 + Y, +Z). Hydrogen atoms were omitted for clarity.

Table 1. Crystal data and structural refinement for the reported PrIV complex, as a PrIII [Pr2L6(H2O)2]n complex and the reported EuIII complex.

Figure 2. H-Bond formation from O10 of coordinated water to two neighboring oxygen atoms. H10B–O6& (−x, 1 − y, 1 − z) 1.895(4) Å; H10A–O3$ (1/2 − x, y − 1/2, 1/2 − z 1.851(4) Å. O10–H10B–O6& 171.7(3)°, O10–H10A–O3$ 158.3(3)°.

Figure 2. H-Bond formation from O10 of coordinated water to two neighboring oxygen atoms. H10B–O6& (−x, 1 − y, 1 − z) 1.895(4) Å; H10A–O3$ (1/2 − x, y − 1/2, 1/2 − z 1.851(4) Å. O10–H10B–O6& 171.7(3)°, O10–H10A–O3$ 158.3(3)°.

Table 2. Bond lengths (Å) for the reported PrIV complex, as a PrIII complex [Pr2L6(H2O)2]n and the reported EuIII complex.