

Supporting information
![]() | Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536811030376/im2307sup1.cif |
CCDC reference: 845644
Key indicators
- Single-crystal X-ray study
- T = 100 K
- Mean
(C-C) = 0.005 Å
- Disorder in main residue
- R factor = 0.035
- wR factor = 0.088
- Data-to-parameter ratio = 21.6
checkCIF/PLATON results
No syntax errors found
Alert level A PLAT900_ALERT_1_A No Matching Reflection File Found .............. ! PLAT900_ALERT_1_A No Matching Reflection File Found .............. ! PLAT902_ALERT_1_A No (Interpretable) Reflections found in FCF .... !
Alert level B PLAT230_ALERT_2_B Hirshfeld Test Diff for S3A -- C21A .. 8.5 su
Alert level C PLAT042_ALERT_1_C Calc. and Reported MoietyFormula Strings Differ ? PLAT142_ALERT_4_C su on b - Axis Small or Missing ................ 0.00010 Ang. PLAT143_ALERT_4_C su on c - Axis Small or Missing ................ 0.00010 Ang. PLAT143_ALERT_4_C su on c - Axis Small or Missing ................ 0.00010 Ang. PLAT213_ALERT_2_C Atom F6 has ADP max/min Ratio ..... 3.2 prola PLAT230_ALERT_2_C Hirshfeld Test Diff for C6 -- C7 .. 6.5 su PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C9 PLAT924_ALERT_1_C The Reported and Calculated Rho(min) Differ by . 1.06 eA-3
Alert level G PLAT002_ALERT_2_G Number of Distance or Angle Restraints on AtSite 20 PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ? PLAT153_ALERT_1_G The su's on the Cell Axes are Equal .......... 0.00010 Ang. PLAT154_ALERT_1_G The su's on the Cell Angles are Equal .......... 0.00100 Deg. PLAT232_ALERT_2_G Hirshfeld Test Diff (M-X) Nd1 -- O1 .. 5.1 su PLAT301_ALERT_3_G Note: Main Residue Disorder ................... 22 Perc. PLAT811_ALERT_5_G No ADDSYM Analysis: Too Many Excluded Atoms .... ! PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints ....... 20
3 ALERT level A = Most likely a serious problem - resolve or explain 1 ALERT level B = A potentially serious problem, consider carefully 8 ALERT level C = Check. Ensure it is not caused by an omission or oversight 8 ALERT level G = General information/check it is not something unexpected 7 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 6 ALERT type 2 Indicator that the structure model may be wrong or deficient 2 ALERT type 3 Indicator that the structure quality may be low 3 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check
The title compound was synthesized by a previously reported procedure (Voloshin et al. 2000). Crystals were isolated from a saturated solution of acetonitrile and water (v/v = 1:5) upon standing at room temperature.
Hydrogen atoms were positioned geometrically using a riding model with C—H = 0.95, 0.99 and 0.98 Å for aromatic CH and aliphatic CH2 and CH3 hydrogen atoms, respectively, and Uiso(H)=1.2–1.5 Ueq(C). Hydrogen atoms of the water molecules were found in the difference map and their thermal parameters constrained to the parent atoms. Two thiophene rings are disordered through a 180° rotation with respect to the C—C bond to the β-diketonato moiety. The disorder was modeled by allowing the occupancy factors of the two possible ring positions to freely refine to 61 and 59% for the major components. The bond distances for the major and minor components were restrained with the SAME command and the thermal displacement paramenters of both ring atom components restrained with the EADP command.
For determining emission efficiencies of sensitized lanthanide luminescence in the NIR region of the spectrum, a NdIII complex with 4,4,4-trifluoro-3-oxo-1-(thiophen-2-yl)but-1-en-1-olate (TTA) (Scheme 1) is used as a standard (Rusakova et al., 1992a). We synthesized the complex and isolated X-ray quality single crystals. The structure shown in Figure 1 was obtained. The NdIII is surrounded by three TTA ligands, coordinated through the oxygen atoms, and two water molecules. Two TTA ligands are in the same plane while the remaining one is almost perpendicular to that plane with an angle of 87.6°. A single uncoordinated acetonitrile molecule crystallized within the asymmetric unit. Two of the three thiophene rings are disordered, as seen for many structures involving thiophene moieties. Modeling the disorder gives two different positions for the thiophene rings, where they are rotated 180° around the C—C bond to the beta-diketone. The occupancy factors for both disordered rings are 59 and 61% for the major component. Figure 2 shows the coordination polyhedron around the NdIII, which can be described as a slightly distorted square antiprism. The NdIII—O bond distances are in the range 2.372 (3)–2.513 (3) Å with the TTA ligands displaying the shorter bond lengths. These distances compare well with a similar structure of NdIII with TTA reported by Leipoldt et al. (1975), with the formula [Nd(TTA)3(TPPO)2] (TPPO=triphenylphosphine oxide). In this complex the two water molecules are replaced by two TPPO ligands. The final complex has a similar coordination environment around the NdIII ion with NdIII—O bond distances in the range 2.397–2.496 Å, with the shorter bond distances corresponding to the TPPO ligands.
Hydrogen bonding interactions support the packing structure of the complex and are shown in Figure 3 with blue dashed lines. Interactions exist between the water molecule O—H donors and the acetonitrile N and beta-diketonato O acceptors with D···A distances in the range 2.803 (3)–2.893 (4) Å. A search of similar interactions in the Cambridge Structural Database yields 194 results with a range of interaction distances between 2.597 and 3.040 Å and an average of 2.834 Å. The reported distances are slightly longer than the distances in the complex discussed here. An isostructural Eu(III) complex has also been reported by White (1976). Due to slow decomposition of the crystals of the Eu(III) complex the data reported were poor, but the weak hydrogen bonding interactions were shown to be in the range D···A = 2.9–3.0 Å.
The title complex has been studied for its near-infrared emitting properties and as a standard for near-infraed emission quantum yield measurements, see: Rusakova et al. (1992a,b); Voloshin et al. (2000). For the Eu(III) analog, see: White (1976). A similar NdIII complex with trifluoracetyl-4-(thiophen2-yl)acetonato ligands but triphenylphosphine oxide) instead of water molecules as the ancillary ligands was described by Leipoldt et al. (1975).
Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
[Nd(C8H4F3O2S)3(H2O)2]·C2H3N | Z = 2 |
Mr = 884.84 | F(000) = 870 |
Triclinic, P1 | Dx = 1.867 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 11.2381 (1) Å | Cell parameters from 9284 reflections |
b = 12.5467 (1) Å | θ = 2.3–31.3° |
c = 13.3618 (1) Å | µ = 1.95 mm−1 |
α = 66.038 (1)° | T = 100 K |
β = 68.586 (1)° | Plates, colourless |
γ = 71.955 (1)° | 0.15 × 0.08 × 0.03 mm |
V = 1573.66 (2) Å3 |
Bruker APEX CCD diffractometer | 9148 independent reflections |
Radiation source: fine-focus sealed tube | 7549 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.054 |
φ and ω scans | θmax = 30.0°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | h = −15→15 |
Tmin = 0.759, Tmax = 0.953 | k = −17→17 |
43274 measured reflections | l = −18→18 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.088 | H-atom parameters constrained |
S = 1.10 | w = 1/[σ2(Fo2) + (0.044P)2] where P = (Fo2 + 2Fc2)/3 |
9148 reflections | (Δ/σ)max = 0.007 |
424 parameters | Δρmax = 0.96 e Å−3 |
20 restraints | Δρmin = −1.06 e Å−3 |
[Nd(C8H4F3O2S)3(H2O)2]·C2H3N | γ = 71.955 (1)° |
Mr = 884.84 | V = 1573.66 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 11.2381 (1) Å | Mo Kα radiation |
b = 12.5467 (1) Å | µ = 1.95 mm−1 |
c = 13.3618 (1) Å | T = 100 K |
α = 66.038 (1)° | 0.15 × 0.08 × 0.03 mm |
β = 68.586 (1)° |
Bruker APEX CCD diffractometer | 9148 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | 7549 reflections with I > 2σ(I) |
Tmin = 0.759, Tmax = 0.953 | Rint = 0.054 |
43274 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 20 restraints |
wR(F2) = 0.088 | H-atom parameters constrained |
S = 1.10 | Δρmax = 0.96 e Å−3 |
9148 reflections | Δρmin = −1.06 e Å−3 |
424 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Nd1 | 0.190944 (16) | 0.993398 (14) | 0.285170 (14) | 0.01360 (5) | |
C1 | 0.3737 (4) | 0.6939 (3) | 0.1120 (3) | 0.0285 (8) | |
C2 | 0.2963 (3) | 0.8164 (3) | 0.1216 (3) | 0.0196 (6) | |
C3 | 0.2577 (3) | 0.8976 (3) | 0.0273 (3) | 0.0223 (7) | |
H3 | 0.2875 | 0.8788 | −0.0410 | 0.027* | |
C4 | 0.1747 (3) | 1.0083 (3) | 0.0291 (3) | 0.0183 (6) | |
C5 | 0.1205 (3) | 1.0837 (3) | −0.0673 (3) | 0.0185 (6) | |
C6 | 0.1273 (3) | 1.0597 (3) | −0.1632 (3) | 0.0202 (6) | |
H6 | 0.1714 | 0.9876 | −0.1783 | 0.024* | |
C7 | 0.0588 (4) | 1.1585 (4) | −0.2347 (3) | 0.0300 (8) | |
H7 | 0.0520 | 1.1594 | −0.3038 | 0.036* | |
C8 | 0.0047 (4) | 1.2505 (3) | −0.1950 (3) | 0.0291 (8) | |
H8 | −0.0428 | 1.3234 | −0.2336 | 0.035* | |
C9 | 0.1372 (4) | 1.4073 (3) | 0.1154 (3) | 0.0292 (8) | |
C10 | 0.0882 (3) | 1.2891 (3) | 0.1831 (3) | 0.0198 (6) | |
C11 | −0.0394 (3) | 1.2887 (3) | 0.1983 (3) | 0.0220 (7) | |
H11 | −0.0910 | 1.3607 | 0.1633 | 0.026* | |
C12 | −0.0985 (3) | 1.1890 (3) | 0.2622 (3) | 0.0175 (6) | |
C17 | 0.0664 (3) | 0.6343 (3) | 0.5390 (3) | 0.0191 (6) | |
C18 | 0.1538 (3) | 0.7266 (3) | 0.4876 (2) | 0.0152 (6) | |
C19 | 0.2779 (3) | 0.6892 (3) | 0.4989 (3) | 0.0178 (6) | |
H19 | 0.3035 | 0.6083 | 0.5409 | 0.021* | |
C20 | 0.3703 (3) | 0.7649 (3) | 0.4512 (3) | 0.0161 (6) | |
C25 | 0.6428 (4) | 0.7441 (3) | 0.1595 (3) | 0.0305 (8) | |
C26 | 0.6983 (4) | 0.6270 (4) | 0.2297 (4) | 0.0400 (10) | |
H26A | 0.6717 | 0.6243 | 0.3090 | 0.060* | |
H26B | 0.7934 | 0.6137 | 0.2015 | 0.060* | |
H26C | 0.6665 | 0.5650 | 0.2253 | 0.060* | |
F1 | 0.4227 (3) | 0.62708 (19) | 0.1994 (2) | 0.0422 (6) | |
F2 | 0.4754 (2) | 0.7038 (2) | 0.0187 (2) | 0.0433 (6) | |
F3 | 0.3014 (3) | 0.6348 (2) | 0.1032 (3) | 0.0691 (10) | |
F4 | 0.2109 (3) | 1.4231 (2) | 0.1633 (2) | 0.0566 (8) | |
F5 | 0.2082 (3) | 1.4097 (2) | 0.0104 (2) | 0.0528 (7) | |
F6 | 0.0425 (3) | 1.5023 (2) | 0.1042 (3) | 0.0606 (8) | |
F7 | 0.0536 (2) | 0.60903 (17) | 0.45471 (17) | 0.0257 (4) | |
F8 | 0.1102 (2) | 0.53106 (17) | 0.61107 (17) | 0.0273 (4) | |
F9 | −0.05393 (18) | 0.67559 (17) | 0.59475 (17) | 0.0236 (4) | |
N1 | 0.5971 (3) | 0.8339 (3) | 0.1063 (3) | 0.0356 (8) | |
O1 | 0.2734 (2) | 0.8264 (2) | 0.21758 (19) | 0.0210 (5) | |
O2 | 0.1425 (2) | 1.04824 (19) | 0.11022 (18) | 0.0181 (4) | |
O3 | 0.1768 (2) | 1.20437 (19) | 0.21461 (19) | 0.0204 (5) | |
O4 | −0.0423 (2) | 1.08892 (19) | 0.31882 (18) | 0.0176 (4) | |
O5 | 0.0960 (2) | 0.83027 (18) | 0.43937 (18) | 0.0171 (4) | |
O6 | 0.3515 (2) | 0.87030 (19) | 0.38596 (18) | 0.0179 (4) | |
O7 | 0.1452 (2) | 1.05215 (19) | 0.45633 (18) | 0.0180 (4) | |
H7A | 0.0702 | 1.0939 | 0.4681 | 0.027* | |
H7B | 0.1300 | 0.9887 | 0.5114 | 0.027* | |
O8 | 0.4046 (2) | 1.0376 (2) | 0.1502 (2) | 0.0244 (5) | |
H8A | 0.4422 | 0.9834 | 0.1213 | 0.037* | |
H8B | 0.4229 | 1.0902 | 0.0844 | 0.037* | |
S1 | 0.03086 (9) | 1.22193 (8) | −0.06754 (8) | 0.02789 (19) | |
S2A | −0.3133 (2) | 1.31625 (18) | 0.1803 (2) | 0.0320 (5) | 0.594 (3) |
C13A | −0.2345 (3) | 1.1990 (3) | 0.2668 (3) | 0.0242 (5) | 0.594 (3) |
C14A | −0.3198 (9) | 1.1137 (9) | 0.3392 (8) | 0.0242 (5) | 0.594 (3) |
H14A | −0.2951 | 1.0439 | 0.3974 | 0.029* | 0.594 (3) |
C15A | −0.4361 (7) | 1.1402 (6) | 0.3183 (6) | 0.0242 (5) | 0.594 (3) |
H15A | −0.5016 | 1.0931 | 0.3586 | 0.029* | 0.594 (3) |
C16A | −0.4458 (7) | 1.2445 (5) | 0.2311 (6) | 0.0242 (5) | 0.594 (3) |
H16A | −0.5182 | 1.2759 | 0.2002 | 0.029* | 0.594 (3) |
S2B | −0.3167 (4) | 1.0888 (3) | 0.3546 (3) | 0.0320 (5) | 0.406 (3) |
C13B | −0.2345 (3) | 1.1990 (3) | 0.2668 (3) | 0.0242 (5) | 0.406 (3) |
C14B | −0.3102 (13) | 1.2881 (12) | 0.1790 (13) | 0.0242 (5) | 0.406 (3) |
H14B | −0.2735 | 1.3422 | 0.1076 | 0.029* | 0.406 (3) |
C15B | −0.4371 (10) | 1.2763 (8) | 0.2204 (9) | 0.0242 (5) | 0.406 (3) |
H15B | −0.5072 | 1.3359 | 0.1971 | 0.029* | 0.406 (3) |
C16B | −0.4491 (10) | 1.1696 (8) | 0.2981 (9) | 0.0242 (5) | 0.406 (3) |
H16B | −0.5257 | 1.1386 | 0.3218 | 0.029* | 0.406 (3) |
S3A | 0.60840 (19) | 0.8046 (2) | 0.41395 (14) | 0.0263 (4) | 0.609 (3) |
C21A | 0.4947 (3) | 0.7201 (3) | 0.4798 (3) | 0.0223 (5) | 0.609 (3) |
C22A | 0.5414 (9) | 0.6050 (10) | 0.5596 (8) | 0.0223 (5) | 0.609 (3) |
H22A | 0.4990 | 0.5387 | 0.5975 | 0.027* | 0.609 (3) |
C23A | 0.6670 (7) | 0.6111 (6) | 0.5706 (5) | 0.0223 (5) | 0.609 (3) |
H23A | 0.7069 | 0.5592 | 0.6293 | 0.027* | 0.609 (3) |
C24A | 0.7138 (6) | 0.7048 (6) | 0.4809 (5) | 0.0223 (5) | 0.609 (3) |
H24A | 0.8023 | 0.7120 | 0.4585 | 0.027* | 0.609 (3) |
S3B | 0.5321 (4) | 0.5908 (4) | 0.5775 (3) | 0.0263 (4) | 0.391 (3) |
C21B | 0.4947 (3) | 0.7201 (3) | 0.4798 (3) | 0.0223 (5) | 0.391 (3) |
C22B | 0.5922 (13) | 0.7958 (14) | 0.4398 (12) | 0.0223 (5) | 0.391 (3) |
H22B | 0.5893 | 0.8744 | 0.3871 | 0.027* | 0.391 (3) |
C23B | 0.6955 (10) | 0.7251 (8) | 0.4981 (8) | 0.0223 (5) | 0.391 (3) |
H23B | 0.7625 | 0.7536 | 0.5016 | 0.027* | 0.391 (3) |
C24B | 0.6742 (11) | 0.6036 (9) | 0.5488 (8) | 0.0223 (5) | 0.391 (3) |
H24B | 0.7424 | 0.5371 | 0.5633 | 0.027* | 0.391 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Nd1 | 0.01429 (8) | 0.01215 (8) | 0.01391 (8) | −0.00136 (5) | −0.00544 (6) | −0.00335 (6) |
C1 | 0.031 (2) | 0.0238 (17) | 0.0302 (19) | 0.0008 (15) | −0.0090 (16) | −0.0128 (15) |
C2 | 0.0183 (16) | 0.0162 (14) | 0.0239 (16) | −0.0033 (12) | −0.0036 (13) | −0.0082 (13) |
C3 | 0.0289 (18) | 0.0188 (15) | 0.0182 (15) | −0.0048 (13) | −0.0041 (13) | −0.0072 (13) |
C4 | 0.0180 (15) | 0.0214 (15) | 0.0174 (14) | −0.0083 (12) | −0.0035 (12) | −0.0063 (13) |
C5 | 0.0204 (16) | 0.0189 (15) | 0.0173 (14) | −0.0076 (12) | −0.0051 (12) | −0.0045 (12) |
C6 | 0.0222 (16) | 0.0248 (16) | 0.0158 (14) | −0.0115 (13) | −0.0050 (13) | −0.0038 (13) |
C7 | 0.0282 (19) | 0.048 (2) | 0.0167 (16) | −0.0194 (17) | −0.0055 (14) | −0.0059 (16) |
C8 | 0.0270 (19) | 0.035 (2) | 0.0245 (17) | −0.0097 (16) | −0.0143 (15) | −0.0001 (16) |
C9 | 0.034 (2) | 0.0186 (16) | 0.0285 (18) | −0.0044 (15) | −0.0047 (16) | −0.0048 (15) |
C10 | 0.0289 (18) | 0.0140 (14) | 0.0155 (14) | −0.0029 (13) | −0.0053 (13) | −0.0054 (12) |
C11 | 0.0274 (18) | 0.0148 (14) | 0.0179 (15) | 0.0028 (13) | −0.0091 (13) | −0.0020 (12) |
C12 | 0.0192 (15) | 0.0194 (15) | 0.0147 (14) | 0.0010 (12) | −0.0065 (12) | −0.0082 (12) |
C17 | 0.0201 (16) | 0.0155 (14) | 0.0236 (16) | −0.0009 (12) | −0.0107 (13) | −0.0060 (13) |
C18 | 0.0174 (15) | 0.0153 (14) | 0.0128 (13) | −0.0025 (11) | −0.0046 (11) | −0.0046 (11) |
C19 | 0.0180 (15) | 0.0151 (14) | 0.0214 (15) | −0.0010 (12) | −0.0105 (13) | −0.0042 (12) |
C20 | 0.0157 (15) | 0.0174 (14) | 0.0158 (14) | 0.0015 (11) | −0.0059 (12) | −0.0080 (12) |
C25 | 0.0227 (18) | 0.032 (2) | 0.034 (2) | −0.0063 (15) | −0.0050 (16) | −0.0097 (17) |
C26 | 0.034 (2) | 0.035 (2) | 0.034 (2) | −0.0024 (18) | −0.0093 (18) | 0.0028 (18) |
F1 | 0.0635 (17) | 0.0191 (11) | 0.0353 (13) | 0.0096 (11) | −0.0200 (12) | −0.0077 (10) |
F2 | 0.0424 (14) | 0.0398 (13) | 0.0356 (13) | 0.0123 (11) | −0.0059 (11) | −0.0199 (11) |
F3 | 0.0480 (17) | 0.0369 (14) | 0.151 (3) | 0.0037 (12) | −0.0421 (19) | −0.0547 (19) |
F4 | 0.089 (2) | 0.0359 (14) | 0.0580 (17) | −0.0372 (15) | −0.0327 (16) | 0.0017 (13) |
F5 | 0.0714 (19) | 0.0366 (14) | 0.0303 (13) | −0.0235 (13) | 0.0121 (13) | −0.0051 (11) |
F6 | 0.0483 (16) | 0.0121 (11) | 0.091 (2) | 0.0016 (10) | −0.0056 (15) | −0.0042 (13) |
F7 | 0.0314 (11) | 0.0246 (10) | 0.0296 (11) | −0.0078 (9) | −0.0129 (9) | −0.0115 (9) |
F8 | 0.0269 (11) | 0.0163 (9) | 0.0335 (11) | −0.0055 (8) | −0.0157 (9) | 0.0043 (8) |
F9 | 0.0181 (10) | 0.0226 (10) | 0.0274 (10) | −0.0056 (8) | −0.0043 (8) | −0.0064 (8) |
N1 | 0.0234 (16) | 0.0277 (17) | 0.048 (2) | −0.0057 (13) | −0.0110 (15) | −0.0035 (15) |
O1 | 0.0253 (12) | 0.0183 (11) | 0.0200 (11) | −0.0015 (9) | −0.0096 (10) | −0.0058 (9) |
O2 | 0.0208 (11) | 0.0179 (11) | 0.0163 (10) | −0.0015 (9) | −0.0071 (9) | −0.0061 (9) |
O3 | 0.0239 (12) | 0.0153 (11) | 0.0217 (11) | −0.0030 (9) | −0.0080 (10) | −0.0047 (9) |
O4 | 0.0180 (11) | 0.0155 (10) | 0.0165 (10) | −0.0011 (8) | −0.0058 (9) | −0.0032 (9) |
O5 | 0.0158 (11) | 0.0155 (10) | 0.0185 (10) | −0.0002 (8) | −0.0074 (9) | −0.0038 (9) |
O6 | 0.0182 (11) | 0.0147 (10) | 0.0200 (11) | −0.0018 (8) | −0.0094 (9) | −0.0024 (9) |
O7 | 0.0179 (11) | 0.0165 (10) | 0.0178 (10) | −0.0003 (9) | −0.0062 (9) | −0.0051 (9) |
O8 | 0.0205 (12) | 0.0206 (12) | 0.0213 (12) | −0.0042 (10) | −0.0002 (10) | −0.0011 (10) |
S1 | 0.0333 (5) | 0.0248 (4) | 0.0270 (4) | −0.0003 (4) | −0.0169 (4) | −0.0063 (4) |
S2A | 0.0261 (7) | 0.0370 (12) | 0.0333 (8) | 0.0035 (7) | −0.0148 (6) | −0.0133 (9) |
C13A | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C14A | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C15A | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C16A | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
S2B | 0.0261 (7) | 0.0370 (12) | 0.0333 (8) | 0.0035 (7) | −0.0148 (6) | −0.0133 (9) |
C13B | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C14B | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C15B | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
C16B | 0.0249 (11) | 0.0239 (15) | 0.0281 (13) | 0.0045 (10) | −0.0145 (9) | −0.0133 (12) |
S3A | 0.0184 (7) | 0.0314 (8) | 0.0279 (10) | −0.0081 (6) | −0.0098 (7) | −0.0031 (8) |
C21A | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C22A | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C23A | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C24A | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
S3B | 0.0184 (7) | 0.0314 (8) | 0.0279 (10) | −0.0081 (6) | −0.0098 (7) | −0.0031 (8) |
C21B | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C22B | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C23B | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
C24B | 0.0154 (10) | 0.0321 (12) | 0.0188 (11) | 0.0031 (9) | −0.0038 (9) | −0.0142 (9) |
Nd1—O2 | 2.372 (2) | C19—C20 | 1.423 (4) |
Nd1—O3 | 2.396 (2) | C19—H19 | 0.9500 |
Nd1—O1 | 2.406 (2) | C20—O6 | 1.256 (4) |
Nd1—O6 | 2.411 (2) | C20—C21A | 1.465 (4) |
Nd1—O5 | 2.428 (2) | C25—N1 | 1.139 (5) |
Nd1—O4 | 2.478 (2) | C25—C26 | 1.472 (5) |
Nd1—O8 | 2.485 (2) | C26—H26A | 0.9800 |
Nd1—O7 | 2.513 (2) | C26—H26B | 0.9800 |
C1—F3 | 1.318 (4) | C26—H26C | 0.9800 |
C1—F1 | 1.326 (4) | O7—H7A | 0.8400 |
C1—F2 | 1.341 (4) | O7—H7B | 0.8489 |
C1—C2 | 1.545 (5) | O8—H8A | 0.8400 |
C2—O1 | 1.263 (4) | O8—H8B | 0.8555 |
C2—C3 | 1.378 (4) | S2A—C13A | 1.687 (4) |
C3—C4 | 1.417 (4) | S2A—C16A | 1.756 (7) |
C3—H3 | 0.9500 | C13A—C14A | 1.455 (11) |
C4—O2 | 1.264 (4) | C14A—C15A | 1.349 (10) |
C4—C5 | 1.467 (4) | C14A—H14A | 0.9500 |
C5—C6 | 1.403 (4) | C15A—C16A | 1.359 (8) |
C5—S1 | 1.714 (3) | C15A—H15A | 0.9500 |
C6—C7 | 1.423 (5) | C16A—H16A | 0.9500 |
C6—H6 | 0.9500 | S2B—C16B | 1.754 (9) |
C7—C8 | 1.346 (6) | C14B—C15B | 1.359 (14) |
C7—H7 | 0.9500 | C14B—H14B | 0.9500 |
C8—S1 | 1.709 (3) | C15B—C16B | 1.330 (11) |
C8—H8 | 0.9500 | C15B—H15B | 0.9500 |
C9—F4 | 1.313 (4) | C16B—H16B | 0.9500 |
C9—F6 | 1.327 (4) | S3A—C24A | 1.648 (7) |
C9—F5 | 1.331 (4) | S3A—C21A | 1.671 (4) |
C9—C10 | 1.541 (5) | C21A—C22A | 1.478 (10) |
C10—O3 | 1.259 (4) | C22A—C23A | 1.499 (11) |
C10—C11 | 1.374 (5) | C22A—H22A | 0.9500 |
C11—C12 | 1.403 (5) | C23A—C24A | 1.369 (8) |
C11—H11 | 0.9500 | C23A—H23A | 0.9500 |
C12—O4 | 1.278 (4) | C24A—H24A | 0.9500 |
C12—C13A | 1.475 (4) | S3B—C24B | 1.545 (11) |
C17—F8 | 1.336 (3) | C22B—C23B | 1.484 (14) |
C17—F9 | 1.340 (4) | C22B—H22B | 0.9500 |
C17—F7 | 1.352 (3) | C23B—C24B | 1.452 (12) |
C17—C18 | 1.530 (4) | C23B—H23B | 0.9500 |
C18—O5 | 1.277 (3) | C24B—H24B | 0.9500 |
C18—C19 | 1.371 (4) | ||
O2—Nd1—O3 | 78.03 (7) | F8—C17—C18 | 114.9 (2) |
O2—Nd1—O1 | 71.18 (7) | F9—C17—C18 | 111.6 (2) |
O3—Nd1—O1 | 139.97 (8) | F7—C17—C18 | 109.5 (3) |
O2—Nd1—O6 | 142.12 (8) | O5—C18—C19 | 129.7 (3) |
O3—Nd1—O6 | 118.42 (7) | O5—C18—C17 | 112.3 (3) |
O1—Nd1—O6 | 76.45 (7) | C19—C18—C17 | 118.0 (3) |
O2—Nd1—O5 | 115.80 (7) | C18—C19—C20 | 123.6 (3) |
O3—Nd1—O5 | 144.19 (8) | C18—C19—H19 | 118.2 |
O1—Nd1—O5 | 74.21 (7) | C20—C19—H19 | 118.2 |
O6—Nd1—O5 | 72.12 (7) | O6—C20—C19 | 123.9 (3) |
O2—Nd1—O4 | 74.45 (7) | O6—C20—C21A | 116.9 (3) |
O3—Nd1—O4 | 71.76 (7) | C19—C20—C21A | 119.2 (3) |
O1—Nd1—O4 | 121.42 (7) | N1—C25—C26 | 178.4 (4) |
O6—Nd1—O4 | 141.42 (7) | C25—C26—H26A | 109.5 |
O5—Nd1—O4 | 80.26 (7) | C25—C26—H26B | 109.5 |
O2—Nd1—O8 | 80.36 (8) | H26A—C26—H26B | 109.5 |
O3—Nd1—O8 | 71.87 (8) | C25—C26—H26C | 109.5 |
O1—Nd1—O8 | 78.19 (8) | H26A—C26—H26C | 109.5 |
O6—Nd1—O8 | 74.15 (7) | H26B—C26—H26C | 109.5 |
O5—Nd1—O8 | 140.35 (7) | C2—O1—Nd1 | 133.0 (2) |
O4—Nd1—O8 | 139.12 (7) | C4—O2—Nd1 | 138.1 (2) |
O2—Nd1—O7 | 144.79 (7) | C10—O3—Nd1 | 131.7 (2) |
O3—Nd1—O7 | 74.20 (7) | C12—O4—Nd1 | 130.3 (2) |
O1—Nd1—O7 | 142.79 (7) | C18—O5—Nd1 | 128.5 (2) |
O6—Nd1—O7 | 71.78 (7) | C20—O6—Nd1 | 135.6 (2) |
O5—Nd1—O7 | 77.96 (7) | Nd1—O7—H7A | 109.5 |
O4—Nd1—O7 | 76.58 (7) | Nd1—O7—H7B | 102.8 |
O8—Nd1—O7 | 110.36 (8) | H7A—O7—H7B | 98.7 |
F3—C1—F1 | 108.7 (3) | Nd1—O8—H8A | 109.5 |
F3—C1—F2 | 105.7 (3) | Nd1—O8—H8B | 130.6 |
F1—C1—F2 | 105.9 (3) | H8A—O8—H8B | 90.3 |
F3—C1—C2 | 111.5 (3) | C8—S1—C5 | 91.58 (17) |
F1—C1—C2 | 112.6 (3) | C13A—S2A—C16A | 90.3 (3) |
F2—C1—C2 | 112.0 (3) | C14A—C13A—C12 | 128.0 (4) |
O1—C2—C3 | 128.9 (3) | C14A—C13A—S2A | 109.3 (4) |
O1—C2—C1 | 114.6 (3) | C12—C13A—S2A | 122.6 (3) |
C3—C2—C1 | 116.4 (3) | C15A—C14A—C13A | 115.7 (8) |
C2—C3—C4 | 121.9 (3) | C15A—C14A—H14A | 122.2 |
C2—C3—H3 | 119.1 | C13A—C14A—H14A | 122.2 |
C4—C3—H3 | 119.1 | C14A—C15A—C16A | 109.9 (8) |
O2—C4—C3 | 124.1 (3) | C14A—C15A—H15A | 125.1 |
O2—C4—C5 | 116.2 (3) | C16A—C15A—H15A | 125.1 |
C3—C4—C5 | 119.7 (3) | C15A—C16A—S2A | 114.4 (6) |
C6—C5—C4 | 129.7 (3) | C15A—C16A—H16A | 122.8 |
C6—C5—S1 | 111.8 (2) | S2A—C16A—H16A | 122.8 |
C4—C5—S1 | 118.6 (2) | C15B—C14B—H14B | 125.3 |
C5—C6—C7 | 110.5 (3) | C16B—C15B—C14B | 110.4 (11) |
C5—C6—H6 | 124.8 | C16B—C15B—H15B | 124.8 |
C7—C6—H6 | 124.8 | C14B—C15B—H15B | 124.8 |
C8—C7—C6 | 113.6 (3) | C15B—C16B—S2B | 116.9 (9) |
C8—C7—H7 | 123.2 | C15B—C16B—H16B | 121.6 |
C6—C7—H7 | 123.2 | S2B—C16B—H16B | 121.6 |
C7—C8—S1 | 112.6 (3) | C24A—S3A—C21A | 93.4 (3) |
C7—C8—H8 | 123.7 | C20—C21A—C22A | 129.8 (5) |
S1—C8—H8 | 123.7 | C20—C21A—S3A | 118.9 (3) |
F4—C9—F6 | 106.6 (3) | C22A—C21A—S3A | 111.2 (4) |
F4—C9—F5 | 107.2 (3) | C21A—C22A—C23A | 108.2 (8) |
F6—C9—F5 | 106.4 (3) | C21A—C22A—H22A | 125.9 |
F4—C9—C10 | 111.8 (3) | C23A—C22A—H22A | 125.9 |
F6—C9—C10 | 113.8 (3) | C24A—C23A—C22A | 107.8 (7) |
F5—C9—C10 | 110.6 (3) | C24A—C23A—H23A | 126.1 |
O3—C10—C11 | 129.5 (3) | C22A—C23A—H23A | 126.1 |
O3—C10—C9 | 112.2 (3) | C23A—C24A—S3A | 116.4 (6) |
C11—C10—C9 | 118.2 (3) | C23A—C24A—H24A | 121.8 |
C10—C11—C12 | 124.3 (3) | S3A—C24A—H24A | 121.8 |
C10—C11—H11 | 117.8 | C23B—C22B—H22B | 126.7 |
C12—C11—H11 | 117.8 | C24B—C23B—C22B | 106.5 (10) |
O4—C12—C11 | 124.1 (3) | C24B—C23B—H23B | 126.7 |
O4—C12—C13A | 117.1 (3) | C22B—C23B—H23B | 126.7 |
C11—C12—C13A | 118.9 (3) | C23B—C24B—S3B | 114.9 (9) |
F8—C17—F9 | 107.2 (3) | C23B—C24B—H24B | 122.6 |
F8—C17—F7 | 106.7 (2) | S3B—C24B—H24B | 122.6 |
F9—C17—F7 | 106.5 (2) | ||
F3—C1—C2—O1 | 111.4 (4) | O6—Nd1—O3—C10 | −161.9 (3) |
F1—C1—C2—O1 | −11.1 (5) | O5—Nd1—O3—C10 | −63.1 (3) |
F2—C1—C2—O1 | −130.3 (3) | O4—Nd1—O3—C10 | −22.7 (3) |
F3—C1—C2—C3 | −66.3 (4) | O8—Nd1—O3—C10 | 138.3 (3) |
F1—C1—C2—C3 | 171.2 (3) | O7—Nd1—O3—C10 | −103.4 (3) |
F2—C1—C2—C3 | 52.0 (4) | C11—C12—O4—Nd1 | −29.4 (4) |
O1—C2—C3—C4 | −4.1 (6) | C13A—C12—O4—Nd1 | 151.6 (2) |
C1—C2—C3—C4 | 173.3 (3) | O2—Nd1—O4—C12 | −51.4 (2) |
C2—C3—C4—O2 | 9.0 (5) | O3—Nd1—O4—C12 | 30.8 (2) |
C2—C3—C4—C5 | −170.7 (3) | O1—Nd1—O4—C12 | −107.2 (2) |
O2—C4—C5—C6 | −173.1 (3) | O6—Nd1—O4—C12 | 143.8 (2) |
C3—C4—C5—C6 | 6.7 (5) | O5—Nd1—O4—C12 | −171.8 (2) |
O2—C4—C5—S1 | 5.2 (4) | O8—Nd1—O4—C12 | 2.7 (3) |
C3—C4—C5—S1 | −175.0 (3) | O7—Nd1—O4—C12 | 108.4 (2) |
C4—C5—C6—C7 | 179.2 (3) | C19—C18—O5—Nd1 | 26.4 (4) |
S1—C5—C6—C7 | 0.8 (4) | C17—C18—O5—Nd1 | −153.85 (19) |
C5—C6—C7—C8 | 0.2 (4) | O2—Nd1—O5—C18 | 113.3 (2) |
C6—C7—C8—S1 | −1.2 (4) | O3—Nd1—O5—C18 | −140.7 (2) |
F4—C9—C10—O3 | −44.0 (4) | O1—Nd1—O5—C18 | 53.9 (2) |
F6—C9—C10—O3 | −164.8 (3) | O6—Nd1—O5—C18 | −26.6 (2) |
F5—C9—C10—O3 | 75.4 (4) | O4—Nd1—O5—C18 | −179.4 (2) |
F4—C9—C10—C11 | 137.5 (3) | O8—Nd1—O5—C18 | 6.3 (3) |
F6—C9—C10—C11 | 16.7 (5) | O7—Nd1—O5—C18 | −101.2 (2) |
F5—C9—C10—C11 | −103.1 (4) | C19—C20—O6—Nd1 | −10.4 (5) |
O3—C10—C11—C12 | 4.8 (6) | C21A—C20—O6—Nd1 | 170.5 (2) |
C9—C10—C11—C12 | −177.1 (3) | O2—Nd1—O6—C20 | −88.6 (3) |
C10—C11—C12—O4 | 4.2 (5) | O3—Nd1—O6—C20 | 163.3 (3) |
C10—C11—C12—C13A | −176.8 (3) | O1—Nd1—O6—C20 | −56.8 (3) |
F8—C17—C18—O5 | −166.1 (3) | O5—Nd1—O6—C20 | 20.7 (3) |
F9—C17—C18—O5 | −43.8 (3) | O4—Nd1—O6—C20 | 67.1 (3) |
F7—C17—C18—O5 | 73.8 (3) | O8—Nd1—O6—C20 | −138.1 (3) |
F8—C17—C18—C19 | 13.7 (4) | O7—Nd1—O6—C20 | 103.6 (3) |
F9—C17—C18—C19 | 136.0 (3) | C7—C8—S1—C5 | 1.4 (3) |
F7—C17—C18—C19 | −106.4 (3) | C6—C5—S1—C8 | −1.3 (3) |
O5—C18—C19—C20 | −2.8 (5) | C4—C5—S1—C8 | −179.8 (3) |
C17—C18—C19—C20 | 177.4 (3) | O4—C12—C13A—C14A | 8.4 (7) |
C18—C19—C20—O6 | −6.5 (5) | C11—C12—C13A—C14A | −170.7 (6) |
C18—C19—C20—C21A | 172.5 (3) | O4—C12—C13A—S2A | −169.5 (2) |
C3—C2—O1—Nd1 | −13.6 (5) | C11—C12—C13A—S2A | 11.4 (4) |
C1—C2—O1—Nd1 | 169.0 (2) | C16A—S2A—C13A—C14A | −5.3 (5) |
O2—Nd1—O1—C2 | 16.8 (3) | C16A—S2A—C13A—C12 | 173.0 (3) |
O3—Nd1—O1—C2 | −24.9 (3) | C12—C13A—C14A—C15A | −173.9 (6) |
O6—Nd1—O1—C2 | −143.2 (3) | S2A—C13A—C14A—C15A | 4.2 (9) |
O5—Nd1—O1—C2 | 141.9 (3) | C13A—C14A—C15A—C16A | 0.0 (11) |
O4—Nd1—O1—C2 | 74.1 (3) | C14A—C15A—C16A—S2A | −4.2 (9) |
O8—Nd1—O1—C2 | −66.9 (3) | C13A—S2A—C16A—C15A | 5.8 (5) |
O7—Nd1—O1—C2 | −175.1 (2) | C14B—C15B—C16B—S2B | 16.0 (13) |
C3—C4—O2—Nd1 | 4.3 (5) | O6—C20—C21A—C22A | 175.0 (6) |
C5—C4—O2—Nd1 | −176.0 (2) | C19—C20—C21A—C22A | −4.1 (7) |
O3—Nd1—O2—C4 | 141.2 (3) | O6—C20—C21A—S3A | −6.7 (4) |
O1—Nd1—O2—C4 | −12.8 (3) | C19—C20—C21A—S3A | 174.2 (3) |
O6—Nd1—O2—C4 | 19.9 (4) | C24A—S3A—C21A—C20 | −178.9 (3) |
O5—Nd1—O2—C4 | −73.9 (3) | C24A—S3A—C21A—C22A | −0.4 (6) |
O4—Nd1—O2—C4 | −144.6 (3) | C20—C21A—C22A—C23A | −171.5 (4) |
O8—Nd1—O2—C4 | 67.9 (3) | S3A—C21A—C22A—C23A | 10.1 (8) |
O7—Nd1—O2—C4 | 179.7 (3) | C21A—C22A—C23A—C24A | −17.1 (9) |
C11—C10—O3—Nd1 | 13.3 (5) | C22A—C23A—C24A—S3A | 18.2 (7) |
C9—C10—O3—Nd1 | −164.9 (2) | C21A—S3A—C24A—C23A | −11.0 (5) |
O2—Nd1—O3—C10 | 54.7 (3) | C22B—C23B—C24B—S3B | −26.3 (11) |
O1—Nd1—O3—C10 | 94.8 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H7A···O5i | 0.84 | 2.02 | 2.811 (3) | 156 |
O7—H7B···O4i | 0.85 | 2.06 | 2.812 (3) | 148 |
O8—H8A···N1 | 0.84 | 2.15 | 2.902 (5) | 149 |
Symmetry code: (i) −x, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Nd(C8H4F3O2S)3(H2O)2]·C2H3N |
Mr | 884.84 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 11.2381 (1), 12.5467 (1), 13.3618 (1) |
α, β, γ (°) | 66.038 (1), 68.586 (1), 71.955 (1) |
V (Å3) | 1573.66 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.95 |
Crystal size (mm) | 0.15 × 0.08 × 0.03 |
Data collection | |
Diffractometer | Bruker APEX CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2008) |
Tmin, Tmax | 0.759, 0.953 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 43274, 9148, 7549 |
Rint | 0.054 |
(sin θ/λ)max (Å−1) | 0.703 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.088, 1.10 |
No. of reflections | 9148 |
No. of parameters | 424 |
No. of restraints | 20 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.96, −1.06 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 1999), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O7—H7A···O5i | 0.84 | 2.02 | 2.811 (3) | 156 |
O7—H7B···O4i | 0.85 | 2.06 | 2.812 (3) | 148 |
O8—H8A···N1 | 0.84 | 2.15 | 2.902 (5) | 149 |
Symmetry code: (i) −x, −y+2, −z+1. |
For determining emission efficiencies of sensitized lanthanide luminescence in the NIR region of the spectrum, a NdIII complex with 4,4,4-trifluoro-3-oxo-1-(thiophen-2-yl)but-1-en-1-olate (TTA) (Scheme 1) is used as a standard (Rusakova et al., 1992a). We synthesized the complex and isolated X-ray quality single crystals. The structure shown in Figure 1 was obtained. The NdIII is surrounded by three TTA ligands, coordinated through the oxygen atoms, and two water molecules. Two TTA ligands are in the same plane while the remaining one is almost perpendicular to that plane with an angle of 87.6°. A single uncoordinated acetonitrile molecule crystallized within the asymmetric unit. Two of the three thiophene rings are disordered, as seen for many structures involving thiophene moieties. Modeling the disorder gives two different positions for the thiophene rings, where they are rotated 180° around the C—C bond to the beta-diketone. The occupancy factors for both disordered rings are 59 and 61% for the major component. Figure 2 shows the coordination polyhedron around the NdIII, which can be described as a slightly distorted square antiprism. The NdIII—O bond distances are in the range 2.372 (3)–2.513 (3) Å with the TTA ligands displaying the shorter bond lengths. These distances compare well with a similar structure of NdIII with TTA reported by Leipoldt et al. (1975), with the formula [Nd(TTA)3(TPPO)2] (TPPO=triphenylphosphine oxide). In this complex the two water molecules are replaced by two TPPO ligands. The final complex has a similar coordination environment around the NdIII ion with NdIII—O bond distances in the range 2.397–2.496 Å, with the shorter bond distances corresponding to the TPPO ligands.
Hydrogen bonding interactions support the packing structure of the complex and are shown in Figure 3 with blue dashed lines. Interactions exist between the water molecule O—H donors and the acetonitrile N and beta-diketonato O acceptors with D···A distances in the range 2.803 (3)–2.893 (4) Å. A search of similar interactions in the Cambridge Structural Database yields 194 results with a range of interaction distances between 2.597 and 3.040 Å and an average of 2.834 Å. The reported distances are slightly longer than the distances in the complex discussed here. An isostructural Eu(III) complex has also been reported by White (1976). Due to slow decomposition of the crystals of the Eu(III) complex the data reported were poor, but the weak hydrogen bonding interactions were shown to be in the range D···A = 2.9–3.0 Å.