metal-organic compounds
Bis(2,2′-bipyridine)-1κ2N,N′;3κ2N,N′-hexa-μ-methacrylato-1:2κ6O:O′;2:3κ6O:O′-(nitrato-2κ2O,O′)-1,3-dicobalt(II)-2-terbium(III)
aDepartment of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
*Correspondence e-mail: chemdpwu@yahoo.com.cn
In the title trinuclear cobalt–terbium complex, [Co2Tb(C4H5O2)6(NO3)(C10H8N2)2], the central TbIII and each of the CoII ions are bridged by three carboxylate groups of the methacrylate anions. The TbIII cation is coordinated by six O atoms from six methacrylate anions and two O atoms from a chelating nitrate anion in a distorted square-antiprismatic geometry. Each CoII ion is coordinated by three O atoms from three methylacrylate anions and two N atoms of a 2,2′-bypiridine ligand in a distorted square-pyramidal geometry. In the π–π stacking between the pyridine rings [centroid–centroid distances = 3.682 (8) and 3.760 (8) Å] is observed and weak intermolecular C—H⋯O hydrogen bonding is also present.
Related literature
For the crystal structures of analogous complexes, see: Wu & Guo (2004); Zhu et al. (2005); Wu (2008); Wu & Hou (2010). For details of the preparation of TbL3·H2O (HL = CH2C(CH3)COOH), see: Lu et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: RAPID-AUTO (Rigaku, 1998); cell RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536810031053/xu5010sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810031053/xu5010Isup2.hkl
TbL3.H2O (864 mg, 2.0 mmol; HL = CH2C(CH3)COOH) and Co(NO3)2.6H2O (435 mg, 1.5 mmol) were dissolved in 15 ml water, and the pH adjusted to 4.0 using HL. An ethanol solution (3 ml) of 2,2'-bipyridine (234 mg, 1.5 mmol) was added into the above solution with stirring. After filtration, the filtrate was allowed to stand at room temperature and single crystals suitable for X-ray work were obtained after two weeks.
H atoms were placed in idealized locations with C–H distances 0.93 - 0.96 Å and refined as riding with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(C).
The study of heterometallic complexes containing d-transition metal and lanthanide(III) cations connected by bridging ligands is being actively pursued because of their relevance in solid-state technology and as models for magnetic studies. As a contribution to a structural study of heterometallic complexes containing d-transition metal and rare-earth(III) cations (Wu & Guo, 2004; Zhu et al., 2005; Wu, 2008), herewith we report the synthesis and
of the title compound, (I).The
of the title Co—Tb—Co trinuclear complex is similar to the known crystal structures of the Zn—Ce—Zn, Zn—Nd—Zn, Co—Gd—Co and Co—Ce—Co complexes (Wu & Guo, 2004; Zhu et al., 2005; Wu, 2008; Wu & Hou, 2010). The TbIII center is coordinated by six O atoms from six methacrylato ligands and two O atoms from nitrate anion in a distorted square-antiprismatic geometry. Each CoII ion is coordinated by three O atoms from three methacrylato ligands and two N atoms from 2,2'-bypiridine ligand in a distorted pyramidal geometry. The TbIII and each of two CoII ions are bridged by three bidentate methacrylato ligands. Two Tb···Co separations are almost equal. The separations of Tb···Co1 and Tb···Co2 are 3.937 (1) and 3.822 (1) Å, respectively.In the π-π interactions between the aromatic rings [centroid-centroid distances of 3.682 (8) and 3.760 (8) Å, respectively] link molecules into chains propagated in direction [01–1]. The aromatic stacking interactions are responsible for the supramolecular assemblies. Weak intermolecular C—H···O hydrogen bonds stabilize further the crystal packing (Table 1).
For the crystal structures of analogous complexes, see: Wu & Guo (2004); Zhu et al. (2005); Wu (2008); Wu & Hou (2010). For details of the preparation of TbL3.H2O (HL = CH2C(CH3)COOH), see: Lu et al. (1995).
Data collection: RAPID-AUTO (Rigaku, 1998); cell
RAPID-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. View of the molecule showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. All H atoms have been omitted for clarity. |
[Co2Tb(C4H5O2)6(NO3)(C10H8N2)2] | Z = 2 |
Mr = 1161.64 | F(000) = 1168 |
Triclinic, P1 | Dx = 1.656 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71069 Å |
a = 11.3717 (6) Å | Cell parameters from 10681 reflections |
b = 13.4396 (5) Å | θ = 2.0–27.5° |
c = 16.3572 (8) Å | µ = 2.28 mm−1 |
α = 103.912 (2)° | T = 293 K |
β = 99.950 (2)° | Block, brown |
γ = 99.845 (3)° | 0.32 × 0.31 × 0.15 mm |
V = 2330.26 (19) Å3 |
Rigaku R-AXIS RAPID diffractometer | 8051 independent reflections |
Radiation source: fine-focus sealed tube | 7272 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
Detector resolution: 10.00 pixels mm-1 | θmax = 25.1°, θmin = 1.3° |
ω scans | h = −13→13 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −16→16 |
Tmin = 0.495, Tmax = 0.709 | l = −19→19 |
13172 measured reflections |
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)] = 0.025 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.060 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0316P)2 + 2.6217P] where P = (Fo2 + 2Fc2)/3 |
8051 reflections | (Δ/σ)max = 0.001 |
610 parameters | Δρmax = 0.45 e Å−3 |
0 restraints | Δρmin = −0.87 e Å−3 |
[Co2Tb(C4H5O2)6(NO3)(C10H8N2)2] | γ = 99.845 (3)° |
Mr = 1161.64 | V = 2330.26 (19) Å3 |
Triclinic, P1 | Z = 2 |
a = 11.3717 (6) Å | Mo Kα radiation |
b = 13.4396 (5) Å | µ = 2.28 mm−1 |
c = 16.3572 (8) Å | T = 293 K |
α = 103.912 (2)° | 0.32 × 0.31 × 0.15 mm |
β = 99.950 (2)° |
Rigaku R-AXIS RAPID diffractometer | 8051 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 7272 reflections with I > 2σ(I) |
Tmin = 0.495, Tmax = 0.709 | Rint = 0.031 |
13172 measured reflections |
R[F2 > 2σ(F2)] = 0.025 | 0 restraints |
wR(F2) = 0.060 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.45 e Å−3 |
8051 reflections | Δρmin = −0.87 e Å−3 |
610 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 | ||
Tb | 0.349851 (12) | 0.235738 (10) | 0.240894 (8) | 0.01582 (5) | |
Co1 | 0.28569 (3) | 0.09556 (3) | 0.41926 (2) | 0.01591 (9) | |
Co2 | 0.28401 (3) | 0.42261 (3) | 0.10445 (2) | 0.01763 (9) | |
O1 | 0.45584 (18) | 0.17936 (16) | 0.47967 (13) | 0.0221 (4) | |
O2 | 0.47217 (19) | 0.26143 (17) | 0.37769 (13) | 0.0268 (5) | |
O3 | 0.19771 (19) | 0.21432 (16) | 0.45824 (14) | 0.0253 (5) | |
O4 | 0.2203 (2) | 0.2614 (3) | 0.33945 (16) | 0.0486 (7) | |
O5 | 0.33886 (19) | −0.01681 (16) | 0.33430 (13) | 0.0237 (5) | |
O6 | 0.2821 (2) | 0.06055 (17) | 0.23263 (16) | 0.0308 (5) | |
O7 | 0.5251 (2) | 0.14495 (17) | 0.22325 (14) | 0.0272 (5) | |
O8 | 0.56465 (19) | 0.31214 (17) | 0.23419 (14) | 0.0253 (5) | |
O9 | 0.7096 (2) | 0.2241 (2) | 0.22484 (17) | 0.0405 (6) | |
O10 | 0.15112 (19) | 0.22751 (18) | 0.16450 (14) | 0.0270 (5) | |
O11 | 0.13244 (19) | 0.30122 (16) | 0.05503 (14) | 0.0243 (5) | |
O12 | 0.35412 (19) | 0.19272 (17) | 0.09420 (13) | 0.0255 (5) | |
O13 | 0.38403 (19) | 0.33206 (16) | 0.04124 (13) | 0.0235 (4) | |
O14 | 0.36667 (18) | 0.41464 (16) | 0.24671 (13) | 0.0229 (4) | |
O15 | 0.43760 (19) | 0.53596 (16) | 0.18666 (13) | 0.0253 (5) | |
N1 | 0.1041 (2) | −0.00293 (19) | 0.36608 (15) | 0.0189 (5) | |
N2 | 0.2646 (2) | 0.01087 (18) | 0.50865 (15) | 0.0173 (5) | |
N3 | 0.6023 (2) | 0.2265 (2) | 0.22695 (17) | 0.0263 (6) | |
N4 | 0.1622 (2) | 0.5164 (2) | 0.14918 (16) | 0.0225 (5) | |
N5 | 0.2614 (2) | 0.50765 (19) | 0.01371 (16) | 0.0208 (5) | |
C1 | 0.0287 (3) | −0.0066 (2) | 0.29172 (19) | 0.0235 (6) | |
H1 | 0.0560 | 0.0359 | 0.2585 | 0.028* | |
C2 | −0.0880 (3) | −0.0713 (3) | 0.2625 (2) | 0.0263 (7) | |
H2 | −0.1375 | −0.0727 | 0.2104 | 0.032* | |
C3 | −0.1289 (3) | −0.1337 (2) | 0.31281 (19) | 0.0234 (6) | |
H3 | −0.2066 | −0.1778 | 0.2950 | 0.028* | |
C4 | −0.0520 (3) | −0.1294 (2) | 0.39046 (19) | 0.0215 (6) | |
H4 | −0.0783 | −0.1698 | 0.4255 | 0.026* | |
C5 | 0.0650 (3) | −0.0639 (2) | 0.41511 (18) | 0.0183 (6) | |
C6 | 0.1558 (3) | −0.0565 (2) | 0.49490 (18) | 0.0180 (6) | |
C7 | 0.1328 (3) | −0.1151 (2) | 0.55283 (19) | 0.0221 (6) | |
H7 | 0.0568 | −0.1598 | 0.5438 | 0.027* | |
C8 | 0.2248 (3) | −0.1057 (2) | 0.6238 (2) | 0.0262 (7) | |
H8 | 0.2109 | −0.1443 | 0.6627 | 0.031* | |
C9 | 0.3378 (3) | −0.0386 (2) | 0.6366 (2) | 0.0248 (7) | |
H9 | 0.4009 | −0.0320 | 0.6834 | 0.030* | |
C10 | 0.3538 (3) | 0.0187 (2) | 0.57728 (19) | 0.0226 (6) | |
H10 | 0.4291 | 0.0640 | 0.5853 | 0.027* | |
C11 | 0.5147 (3) | 0.2422 (2) | 0.44716 (18) | 0.0184 (6) | |
C12 | 0.6439 (3) | 0.2969 (2) | 0.4958 (2) | 0.0235 (6) | |
C13 | 0.6891 (3) | 0.2726 (3) | 0.5778 (2) | 0.0353 (8) | |
H13A | 0.7746 | 0.3050 | 0.5992 | 0.053* | |
H13B | 0.6776 | 0.1978 | 0.5676 | 0.053* | |
H13C | 0.6443 | 0.2992 | 0.6196 | 0.053* | |
C14 | 0.7116 (3) | 0.3622 (3) | 0.4627 (3) | 0.0372 (8) | |
H14A | 0.7919 | 0.3953 | 0.4915 | 0.045* | |
H14B | 0.6783 | 0.3745 | 0.4109 | 0.045* | |
C15 | 0.1775 (3) | 0.2680 (2) | 0.40533 (18) | 0.0217 (6) | |
C16 | 0.0906 (3) | 0.3387 (2) | 0.4226 (2) | 0.0232 (6) | |
C17 | 0.0866 (3) | 0.3841 (2) | 0.5151 (2) | 0.0293 (7) | |
H17A | 0.0281 | 0.4279 | 0.5176 | 0.044* | |
H17B | 0.1661 | 0.4254 | 0.5467 | 0.044* | |
H17C | 0.0631 | 0.3282 | 0.5401 | 0.044* | |
C18 | 0.0152 (4) | 0.3511 (3) | 0.3553 (3) | 0.0415 (9) | |
H18A | 0.0174 | 0.3163 | 0.2993 | 0.050* | |
H18B | −0.0394 | 0.3946 | 0.3644 | 0.050* | |
C19 | 0.3180 (2) | −0.0150 (2) | 0.2567 (2) | 0.0206 (6) | |
C20 | 0.3335 (3) | −0.1085 (2) | 0.19035 (19) | 0.0209 (6) | |
C21 | 0.3480 (3) | −0.2036 (2) | 0.2209 (2) | 0.0299 (7) | |
H21A | 0.3576 | −0.2581 | 0.1740 | 0.045* | |
H21B | 0.2767 | −0.2282 | 0.2406 | 0.045* | |
H21C | 0.4190 | −0.1853 | 0.2674 | 0.045* | |
C22 | 0.3347 (3) | −0.1025 (3) | 0.1107 (2) | 0.0348 (8) | |
H22A | 0.3449 | −0.1595 | 0.0695 | 0.042* | |
H22B | 0.3252 | −0.0411 | 0.0960 | 0.042* | |
C23 | 0.0991 (3) | 0.2310 (2) | 0.09099 (19) | 0.0219 (6) | |
C24 | −0.0130 (3) | 0.1450 (2) | 0.0413 (2) | 0.0246 (7) | |
C25 | −0.0923 (3) | 0.1017 (3) | 0.0924 (3) | 0.0394 (9) | |
H25A | −0.1544 | 0.0431 | 0.0550 | 0.059* | |
H25B | −0.1304 | 0.1549 | 0.1200 | 0.059* | |
H25C | −0.0440 | 0.0788 | 0.1355 | 0.059* | |
C26 | −0.0316 (3) | 0.1097 (3) | −0.0457 (2) | 0.0336 (8) | |
H26A | −0.0978 | 0.0549 | −0.0767 | 0.040* | |
H26B | 0.0217 | 0.1402 | −0.0745 | 0.040* | |
C27 | 0.3746 (3) | 0.2350 (2) | 0.03536 (19) | 0.0215 (6) | |
C28 | 0.3872 (3) | 0.1660 (2) | −0.04942 (19) | 0.0227 (6) | |
C29 | 0.3929 (3) | 0.0663 (3) | −0.0578 (2) | 0.0327 (8) | |
H29A | 0.4009 | 0.0247 | −0.1100 | 0.039* | |
H29B | 0.3888 | 0.0381 | −0.0115 | 0.039* | |
C30 | 0.3930 (3) | 0.2180 (3) | −0.1208 (2) | 0.0328 (8) | |
H30A | 0.3975 | 0.1674 | −0.1721 | 0.049* | |
H30B | 0.4643 | 0.2745 | −0.1038 | 0.049* | |
H30C | 0.3210 | 0.2452 | −0.1321 | 0.049* | |
C31 | 0.4425 (3) | 0.5002 (2) | 0.25101 (19) | 0.0206 (6) | |
C32 | 0.5337 (3) | 0.5618 (2) | 0.33372 (19) | 0.0216 (6) | |
C33 | 0.5287 (3) | 0.5358 (3) | 0.4066 (2) | 0.0303 (7) | |
H33A | 0.5833 | 0.5756 | 0.4579 | 0.036* | |
H33B | 0.4707 | 0.4778 | 0.4064 | 0.036* | |
C34 | 0.6245 (3) | 0.6542 (3) | 0.3283 (2) | 0.0351 (8) | |
H34A | 0.6748 | 0.6901 | 0.3847 | 0.053* | |
H34B | 0.5814 | 0.7014 | 0.3067 | 0.053* | |
H34C | 0.6751 | 0.6299 | 0.2899 | 0.053* | |
C35 | 0.1151 (3) | 0.5158 (3) | 0.2190 (2) | 0.0286 (7) | |
H35 | 0.1427 | 0.4767 | 0.2551 | 0.034* | |
C36 | 0.0271 (3) | 0.5709 (3) | 0.2390 (2) | 0.0364 (8) | |
H36 | −0.0031 | 0.5698 | 0.2882 | 0.044* | |
C37 | −0.0150 (3) | 0.6276 (3) | 0.1847 (2) | 0.0353 (8) | |
H37 | −0.0749 | 0.6647 | 0.1967 | 0.042* | |
C38 | 0.0321 (3) | 0.6291 (2) | 0.1125 (2) | 0.0282 (7) | |
H38 | 0.0045 | 0.6670 | 0.0753 | 0.034* | |
C39 | 0.1215 (3) | 0.5727 (2) | 0.09632 (19) | 0.0221 (6) | |
C40 | 0.1818 (3) | 0.5716 (2) | 0.02266 (19) | 0.0215 (6) | |
C41 | 0.1620 (3) | 0.6338 (3) | −0.0332 (2) | 0.0308 (7) | |
H41 | 0.1064 | 0.6769 | −0.0268 | 0.037* | |
C42 | 0.2259 (3) | 0.6308 (3) | −0.0981 (2) | 0.0362 (8) | |
H42 | 0.2129 | 0.6711 | −0.1363 | 0.043* | |
C43 | 0.3096 (3) | 0.5670 (3) | −0.1056 (2) | 0.0328 (8) | |
H43 | 0.3549 | 0.5651 | −0.1479 | 0.039* | |
C44 | 0.3244 (3) | 0.5060 (3) | −0.0484 (2) | 0.0267 (7) | |
H44 | 0.3799 | 0.4627 | −0.0535 | 0.032* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Tb | 0.01728 (8) | 0.01693 (8) | 0.01758 (8) | 0.00519 (5) | 0.00563 (5) | 0.01065 (5) |
Co1 | 0.01583 (19) | 0.01565 (19) | 0.01852 (19) | 0.00300 (15) | 0.00508 (15) | 0.00846 (15) |
Co2 | 0.0185 (2) | 0.0171 (2) | 0.01853 (19) | 0.00386 (15) | 0.00212 (16) | 0.00884 (15) |
O1 | 0.0193 (10) | 0.0230 (11) | 0.0249 (11) | 0.0003 (9) | 0.0041 (9) | 0.0119 (9) |
O2 | 0.0259 (11) | 0.0333 (13) | 0.0215 (11) | 0.0032 (10) | 0.0023 (9) | 0.0127 (9) |
O3 | 0.0244 (11) | 0.0215 (11) | 0.0310 (12) | 0.0075 (9) | 0.0049 (9) | 0.0082 (9) |
O4 | 0.0281 (13) | 0.088 (2) | 0.0312 (14) | 0.0155 (14) | 0.0114 (11) | 0.0144 (14) |
O5 | 0.0238 (11) | 0.0247 (11) | 0.0223 (11) | 0.0069 (9) | 0.0054 (9) | 0.0050 (9) |
O6 | 0.0237 (11) | 0.0229 (12) | 0.0546 (15) | 0.0070 (9) | 0.0135 (11) | 0.0227 (11) |
O7 | 0.0278 (12) | 0.0296 (12) | 0.0331 (12) | 0.0115 (10) | 0.0109 (10) | 0.0187 (10) |
O8 | 0.0252 (11) | 0.0279 (12) | 0.0307 (12) | 0.0072 (9) | 0.0108 (9) | 0.0186 (9) |
O9 | 0.0241 (12) | 0.0699 (19) | 0.0515 (15) | 0.0244 (12) | 0.0213 (12) | 0.0427 (14) |
O10 | 0.0198 (11) | 0.0374 (13) | 0.0260 (11) | 0.0060 (9) | 0.0033 (9) | 0.0144 (10) |
O11 | 0.0226 (11) | 0.0178 (11) | 0.0316 (11) | 0.0018 (9) | 0.0011 (9) | 0.0108 (9) |
O12 | 0.0299 (12) | 0.0320 (12) | 0.0210 (11) | 0.0125 (10) | 0.0091 (9) | 0.0128 (9) |
O13 | 0.0245 (11) | 0.0234 (11) | 0.0260 (11) | 0.0081 (9) | 0.0072 (9) | 0.0099 (9) |
O14 | 0.0210 (10) | 0.0177 (11) | 0.0317 (11) | 0.0051 (9) | 0.0063 (9) | 0.0093 (9) |
O15 | 0.0273 (11) | 0.0231 (11) | 0.0255 (11) | 0.0027 (9) | 0.0005 (9) | 0.0128 (9) |
N1 | 0.0193 (12) | 0.0189 (13) | 0.0202 (12) | 0.0039 (10) | 0.0057 (10) | 0.0079 (10) |
N2 | 0.0173 (12) | 0.0188 (12) | 0.0186 (12) | 0.0048 (10) | 0.0057 (10) | 0.0091 (10) |
N3 | 0.0224 (14) | 0.0377 (16) | 0.0293 (14) | 0.0118 (12) | 0.0092 (11) | 0.0227 (12) |
N4 | 0.0224 (13) | 0.0229 (13) | 0.0218 (13) | 0.0050 (11) | 0.0020 (11) | 0.0077 (10) |
N5 | 0.0189 (12) | 0.0223 (13) | 0.0228 (13) | 0.0031 (10) | 0.0029 (10) | 0.0116 (10) |
C1 | 0.0220 (15) | 0.0286 (17) | 0.0229 (15) | 0.0039 (13) | 0.0067 (13) | 0.0127 (13) |
C2 | 0.0219 (16) | 0.0348 (18) | 0.0227 (15) | 0.0051 (13) | 0.0025 (13) | 0.0113 (13) |
C3 | 0.0195 (15) | 0.0198 (15) | 0.0269 (16) | 0.0002 (12) | 0.0048 (13) | 0.0021 (12) |
C4 | 0.0238 (15) | 0.0168 (15) | 0.0265 (16) | 0.0045 (12) | 0.0088 (13) | 0.0085 (12) |
C5 | 0.0220 (15) | 0.0133 (14) | 0.0214 (14) | 0.0054 (11) | 0.0075 (12) | 0.0050 (11) |
C6 | 0.0200 (15) | 0.0163 (14) | 0.0220 (14) | 0.0085 (12) | 0.0092 (12) | 0.0071 (11) |
C7 | 0.0249 (16) | 0.0177 (15) | 0.0281 (16) | 0.0038 (12) | 0.0101 (13) | 0.0121 (12) |
C8 | 0.0337 (18) | 0.0255 (17) | 0.0280 (16) | 0.0108 (14) | 0.0094 (14) | 0.0184 (13) |
C9 | 0.0275 (16) | 0.0280 (17) | 0.0232 (15) | 0.0124 (13) | 0.0040 (13) | 0.0123 (13) |
C10 | 0.0197 (15) | 0.0238 (16) | 0.0274 (16) | 0.0062 (12) | 0.0047 (13) | 0.0124 (13) |
C11 | 0.0195 (14) | 0.0166 (14) | 0.0191 (14) | 0.0061 (11) | 0.0055 (12) | 0.0026 (11) |
C12 | 0.0187 (15) | 0.0205 (15) | 0.0276 (16) | 0.0026 (12) | 0.0027 (13) | 0.0029 (12) |
C13 | 0.0255 (17) | 0.047 (2) | 0.0315 (18) | 0.0077 (15) | −0.0025 (15) | 0.0140 (16) |
C14 | 0.0226 (17) | 0.036 (2) | 0.053 (2) | −0.0016 (15) | 0.0057 (16) | 0.0198 (17) |
C15 | 0.0170 (14) | 0.0263 (16) | 0.0187 (15) | 0.0002 (12) | 0.0057 (12) | 0.0028 (12) |
C16 | 0.0232 (15) | 0.0193 (15) | 0.0312 (16) | 0.0041 (12) | 0.0099 (13) | 0.0125 (13) |
C17 | 0.0368 (18) | 0.0188 (16) | 0.0389 (18) | 0.0107 (14) | 0.0166 (15) | 0.0113 (14) |
C18 | 0.047 (2) | 0.041 (2) | 0.045 (2) | 0.0197 (18) | 0.0093 (18) | 0.0233 (18) |
C19 | 0.0125 (13) | 0.0190 (15) | 0.0313 (17) | −0.0016 (11) | 0.0078 (12) | 0.0105 (12) |
C20 | 0.0158 (14) | 0.0231 (16) | 0.0223 (15) | 0.0007 (12) | 0.0048 (12) | 0.0058 (12) |
C21 | 0.0326 (18) | 0.0189 (16) | 0.0344 (18) | 0.0053 (13) | 0.0050 (15) | 0.0028 (13) |
C22 | 0.0280 (18) | 0.047 (2) | 0.0315 (18) | 0.0074 (16) | 0.0087 (15) | 0.0140 (16) |
C23 | 0.0184 (15) | 0.0221 (16) | 0.0283 (16) | 0.0085 (12) | 0.0061 (13) | 0.0093 (13) |
C24 | 0.0200 (15) | 0.0199 (16) | 0.0340 (17) | 0.0054 (12) | 0.0006 (13) | 0.0111 (13) |
C25 | 0.0281 (18) | 0.040 (2) | 0.050 (2) | 0.0012 (16) | 0.0056 (17) | 0.0205 (18) |
C26 | 0.0332 (18) | 0.0247 (17) | 0.0382 (19) | 0.0045 (14) | −0.0039 (15) | 0.0096 (14) |
C27 | 0.0143 (14) | 0.0299 (17) | 0.0223 (15) | 0.0062 (12) | 0.0021 (12) | 0.0115 (13) |
C28 | 0.0182 (15) | 0.0315 (17) | 0.0195 (15) | 0.0042 (13) | 0.0064 (12) | 0.0087 (13) |
C29 | 0.0376 (19) | 0.0330 (19) | 0.0327 (18) | 0.0079 (15) | 0.0194 (16) | 0.0105 (15) |
C30 | 0.0382 (19) | 0.040 (2) | 0.0220 (16) | 0.0088 (16) | 0.0088 (15) | 0.0095 (14) |
C31 | 0.0179 (14) | 0.0176 (15) | 0.0280 (16) | 0.0079 (12) | 0.0040 (12) | 0.0077 (12) |
C32 | 0.0224 (15) | 0.0210 (15) | 0.0230 (15) | 0.0082 (12) | 0.0038 (12) | 0.0073 (12) |
C33 | 0.042 (2) | 0.0243 (17) | 0.0219 (16) | 0.0064 (14) | 0.0029 (14) | 0.0044 (13) |
C34 | 0.0314 (18) | 0.034 (2) | 0.0337 (18) | −0.0055 (15) | −0.0004 (15) | 0.0124 (15) |
C35 | 0.0292 (17) | 0.0303 (18) | 0.0254 (16) | 0.0033 (14) | 0.0048 (14) | 0.0094 (13) |
C36 | 0.0314 (19) | 0.045 (2) | 0.0309 (18) | 0.0080 (16) | 0.0091 (15) | 0.0054 (16) |
C37 | 0.0272 (18) | 0.0343 (19) | 0.040 (2) | 0.0126 (15) | 0.0056 (15) | −0.0004 (15) |
C38 | 0.0268 (17) | 0.0203 (16) | 0.0325 (17) | 0.0050 (13) | −0.0004 (14) | 0.0032 (13) |
C39 | 0.0179 (15) | 0.0167 (15) | 0.0259 (15) | 0.0006 (12) | −0.0041 (12) | 0.0037 (12) |
C40 | 0.0225 (15) | 0.0148 (14) | 0.0251 (15) | 0.0008 (12) | −0.0002 (12) | 0.0079 (12) |
C41 | 0.0335 (18) | 0.0233 (17) | 0.0366 (18) | 0.0075 (14) | −0.0008 (15) | 0.0156 (14) |
C42 | 0.046 (2) | 0.0308 (19) | 0.0366 (19) | 0.0034 (16) | 0.0041 (16) | 0.0246 (16) |
C43 | 0.0317 (18) | 0.038 (2) | 0.0320 (18) | 0.0003 (15) | 0.0083 (15) | 0.0210 (15) |
C44 | 0.0255 (16) | 0.0283 (17) | 0.0282 (16) | 0.0046 (13) | 0.0057 (14) | 0.0126 (13) |
Tb—O6 | 2.312 (2) | C13—H13A | 0.9600 |
Tb—O2 | 2.334 (2) | C13—H13B | 0.9600 |
Tb—O12 | 2.340 (2) | C13—H13C | 0.9600 |
Tb—O10 | 2.356 (2) | C14—H14A | 0.9300 |
Tb—O14 | 2.357 (2) | C14—H14B | 0.9300 |
Tb—O4 | 2.369 (2) | C15—C16 | 1.499 (4) |
Tb—O8 | 2.514 (2) | C16—C18 | 1.337 (5) |
Tb—O7 | 2.530 (2) | C16—C17 | 1.501 (4) |
Co1—O1 | 2.012 (2) | C17—H17A | 0.9600 |
Co1—O5 | 2.042 (2) | C17—H17B | 0.9600 |
Co1—O3 | 2.057 (2) | C17—H17C | 0.9600 |
Co1—N2 | 2.078 (2) | C18—H18A | 0.9300 |
Co1—N1 | 2.160 (2) | C18—H18B | 0.9300 |
Co2—O13 | 2.029 (2) | C19—C20 | 1.509 (4) |
Co2—O11 | 2.051 (2) | C20—C22 | 1.327 (4) |
Co2—N5 | 2.088 (2) | C20—C21 | 1.503 (4) |
Co2—O15 | 2.115 (2) | C21—H21A | 0.9600 |
Co2—N4 | 2.133 (3) | C21—H21B | 0.9600 |
Co2—O14 | 2.389 (2) | C21—H21C | 0.9600 |
O1—C11 | 1.260 (3) | C22—H22A | 0.9300 |
O2—C11 | 1.260 (3) | C22—H22B | 0.9300 |
O3—C15 | 1.269 (4) | C23—C24 | 1.518 (4) |
O4—C15 | 1.248 (4) | C24—C26 | 1.354 (5) |
O5—C19 | 1.257 (4) | C24—C25 | 1.473 (5) |
O6—C19 | 1.277 (4) | C25—H25A | 0.9600 |
O7—N3 | 1.263 (3) | C25—H25B | 0.9600 |
O8—N3 | 1.282 (3) | C25—H25C | 0.9600 |
O9—N3 | 1.232 (3) | C26—H26A | 0.9300 |
O10—C23 | 1.260 (4) | C26—H26B | 0.9300 |
O11—C23 | 1.266 (4) | C27—C28 | 1.516 (4) |
O12—C27 | 1.265 (4) | C28—C29 | 1.328 (5) |
O13—C27 | 1.269 (4) | C28—C30 | 1.503 (4) |
O14—C31 | 1.293 (4) | C29—H29A | 0.9300 |
O15—C31 | 1.254 (4) | C29—H29B | 0.9300 |
N1—C1 | 1.346 (4) | C30—H30A | 0.9600 |
N1—C5 | 1.352 (4) | C30—H30B | 0.9600 |
N2—C10 | 1.347 (4) | C30—H30C | 0.9600 |
N2—C6 | 1.350 (4) | C31—C32 | 1.508 (4) |
N4—C35 | 1.343 (4) | C32—C33 | 1.328 (4) |
N4—C39 | 1.352 (4) | C32—C34 | 1.503 (4) |
N5—C44 | 1.338 (4) | C33—H33A | 0.9300 |
N5—C40 | 1.353 (4) | C33—H33B | 0.9300 |
C1—C2 | 1.390 (4) | C34—H34A | 0.9600 |
C1—H1 | 0.9300 | C34—H34B | 0.9600 |
C2—C3 | 1.389 (4) | C34—H34C | 0.9600 |
C2—H2 | 0.9300 | C35—C36 | 1.381 (5) |
C3—C4 | 1.395 (4) | C35—H35 | 0.9300 |
C3—H3 | 0.9300 | C36—C37 | 1.379 (5) |
C4—C5 | 1.396 (4) | C36—H36 | 0.9300 |
C4—H4 | 0.9300 | C37—C38 | 1.382 (5) |
C5—C6 | 1.489 (4) | C37—H37 | 0.9300 |
C6—C7 | 1.401 (4) | C38—C39 | 1.393 (4) |
C7—C8 | 1.386 (4) | C38—H38 | 0.9300 |
C7—H7 | 0.9300 | C39—C40 | 1.484 (4) |
C8—C9 | 1.389 (5) | C40—C41 | 1.394 (4) |
C8—H8 | 0.9300 | C41—C42 | 1.383 (5) |
C9—C10 | 1.392 (4) | C41—H41 | 0.9300 |
C9—H9 | 0.9300 | C42—C43 | 1.387 (5) |
C10—H10 | 0.9300 | C42—H42 | 0.9300 |
C11—C12 | 1.509 (4) | C43—C44 | 1.391 (4) |
C12—C14 | 1.341 (5) | C43—H43 | 0.9300 |
C12—C13 | 1.483 (4) | C44—H44 | 0.9300 |
O6—Tb—O2 | 89.72 (8) | C14—C12—C13 | 123.8 (3) |
O6—Tb—O12 | 91.10 (8) | C14—C12—C11 | 119.2 (3) |
O2—Tb—O12 | 141.89 (7) | C13—C12—C11 | 116.9 (3) |
O6—Tb—O10 | 86.68 (8) | C12—C13—H13A | 109.5 |
O2—Tb—O10 | 144.54 (7) | C12—C13—H13B | 109.5 |
O12—Tb—O10 | 73.50 (7) | H13A—C13—H13B | 109.5 |
O6—Tb—O14 | 165.64 (7) | C12—C13—H13C | 109.5 |
O2—Tb—O14 | 97.02 (7) | H13A—C13—H13C | 109.5 |
O12—Tb—O14 | 91.36 (7) | H13B—C13—H13C | 109.5 |
O10—Tb—O14 | 80.47 (7) | C12—C14—H14A | 120.0 |
O6—Tb—O4 | 83.07 (10) | C12—C14—H14B | 120.0 |
O2—Tb—O4 | 73.78 (8) | H14A—C14—H14B | 120.0 |
O12—Tb—O4 | 144.05 (8) | O4—C15—O3 | 124.3 (3) |
O10—Tb—O4 | 70.76 (8) | O4—C15—C16 | 119.4 (3) |
O14—Tb—O4 | 86.65 (9) | O3—C15—C16 | 116.2 (3) |
O6—Tb—O8 | 122.83 (7) | C18—C16—C15 | 118.5 (3) |
O2—Tb—O8 | 73.60 (7) | C18—C16—C17 | 123.8 (3) |
O12—Tb—O8 | 74.10 (7) | C15—C16—C17 | 117.5 (3) |
O10—Tb—O8 | 136.02 (7) | C16—C17—H17A | 109.5 |
O14—Tb—O8 | 71.39 (7) | C16—C17—H17B | 109.5 |
O4—Tb—O8 | 137.65 (9) | H17A—C17—H17B | 109.5 |
O6—Tb—O7 | 71.84 (7) | C16—C17—H17C | 109.5 |
O2—Tb—O7 | 71.68 (7) | H17A—C17—H17C | 109.5 |
O12—Tb—O7 | 72.45 (7) | H17B—C17—H17C | 109.5 |
O10—Tb—O7 | 138.97 (7) | C16—C18—H18A | 120.0 |
O14—Tb—O7 | 122.32 (7) | C16—C18—H18B | 120.0 |
O4—Tb—O7 | 136.89 (8) | H18A—C18—H18B | 120.0 |
O8—Tb—O7 | 51.00 (7) | O5—C19—O6 | 122.9 (3) |
O1—Co1—O5 | 95.93 (8) | O5—C19—C20 | 117.3 (3) |
O1—Co1—O3 | 96.07 (8) | O6—C19—C20 | 119.8 (3) |
O5—Co1—O3 | 156.98 (8) | C22—C20—C21 | 124.4 (3) |
O1—Co1—N2 | 96.20 (9) | C22—C20—C19 | 119.4 (3) |
O5—Co1—N2 | 96.25 (9) | C21—C20—C19 | 116.2 (2) |
O3—Co1—N2 | 101.89 (9) | C20—C21—H21A | 109.5 |
O1—Co1—N1 | 173.49 (8) | C20—C21—H21B | 109.5 |
O5—Co1—N1 | 84.80 (9) | H21A—C21—H21B | 109.5 |
O3—Co1—N1 | 85.48 (9) | C20—C21—H21C | 109.5 |
N2—Co1—N1 | 77.30 (9) | H21A—C21—H21C | 109.5 |
O13—Co2—O11 | 89.61 (9) | H21B—C21—H21C | 109.5 |
O13—Co2—N5 | 94.45 (9) | C20—C22—H22A | 120.0 |
O11—Co2—N5 | 100.68 (9) | C20—C22—H22B | 120.0 |
O13—Co2—O15 | 94.95 (9) | H22A—C22—H22B | 120.0 |
O11—Co2—O15 | 164.39 (8) | O10—C23—O11 | 125.1 (3) |
N5—Co2—O15 | 93.85 (9) | O10—C23—C24 | 118.0 (3) |
O13—Co2—N4 | 170.11 (9) | O11—C23—C24 | 116.9 (3) |
O11—Co2—N4 | 86.32 (9) | C26—C24—C25 | 123.9 (3) |
N5—Co2—N4 | 77.49 (10) | C26—C24—C23 | 119.1 (3) |
O15—Co2—N4 | 91.34 (9) | C25—C24—C23 | 117.0 (3) |
O13—Co2—O14 | 97.41 (8) | C24—C25—H25A | 109.5 |
O11—Co2—O14 | 106.35 (8) | C24—C25—H25B | 109.5 |
N5—Co2—O14 | 150.45 (9) | H25A—C25—H25B | 109.5 |
O15—Co2—O14 | 58.29 (7) | C24—C25—H25C | 109.5 |
N4—Co2—O14 | 92.38 (8) | H25A—C25—H25C | 109.5 |
C11—O1—Co1 | 121.33 (18) | H25B—C25—H25C | 109.5 |
C11—O2—Tb | 158.9 (2) | C24—C26—H26A | 120.0 |
C15—O3—Co1 | 115.23 (19) | C24—C26—H26B | 120.0 |
C15—O4—Tb | 162.7 (2) | H26A—C26—H26B | 120.0 |
C19—O5—Co1 | 116.41 (19) | O12—C27—O13 | 124.7 (3) |
C19—O6—Tb | 141.31 (19) | O12—C27—C28 | 118.6 (3) |
N3—O7—Tb | 95.80 (17) | O13—C27—C28 | 116.6 (3) |
N3—O8—Tb | 96.05 (16) | C29—C28—C30 | 123.5 (3) |
C23—O10—Tb | 138.55 (19) | C29—C28—C27 | 120.7 (3) |
C23—O11—Co2 | 125.38 (19) | C30—C28—C27 | 115.8 (3) |
C27—O12—Tb | 141.3 (2) | C28—C29—H29A | 120.0 |
C27—O13—Co2 | 124.09 (18) | C28—C29—H29B | 120.0 |
C31—O14—Tb | 143.88 (18) | H29A—C29—H29B | 120.0 |
C31—O14—Co2 | 84.09 (17) | C28—C30—H30A | 109.5 |
Tb—O14—Co2 | 107.30 (8) | C28—C30—H30B | 109.5 |
C31—O15—Co2 | 97.56 (18) | H30A—C30—H30B | 109.5 |
C1—N1—C5 | 119.0 (2) | C28—C30—H30C | 109.5 |
C1—N1—Co1 | 126.30 (19) | H30A—C30—H30C | 109.5 |
C5—N1—Co1 | 114.68 (19) | H30B—C30—H30C | 109.5 |
C10—N2—C6 | 119.5 (2) | O15—C31—O14 | 120.0 (3) |
C10—N2—Co1 | 123.40 (19) | O15—C31—C32 | 118.6 (3) |
C6—N2—Co1 | 117.13 (18) | O14—C31—C32 | 121.3 (3) |
O9—N3—O7 | 121.5 (3) | C33—C32—C34 | 123.5 (3) |
O9—N3—O8 | 121.4 (3) | C33—C32—C31 | 120.3 (3) |
O7—N3—O8 | 117.1 (2) | C34—C32—C31 | 116.2 (3) |
C35—N4—C39 | 118.8 (3) | C32—C33—H33A | 120.0 |
C35—N4—Co2 | 125.8 (2) | C32—C33—H33B | 120.0 |
C39—N4—Co2 | 115.0 (2) | H33A—C33—H33B | 120.0 |
C44—N5—C40 | 119.4 (3) | C32—C34—H34A | 109.5 |
C44—N5—Co2 | 124.1 (2) | C32—C34—H34B | 109.5 |
C40—N5—Co2 | 116.35 (19) | H34A—C34—H34B | 109.5 |
N1—C1—C2 | 122.8 (3) | C32—C34—H34C | 109.5 |
N1—C1—H1 | 118.6 | H34A—C34—H34C | 109.5 |
C2—C1—H1 | 118.6 | H34B—C34—H34C | 109.5 |
C3—C2—C1 | 118.4 (3) | N4—C35—C36 | 122.4 (3) |
C3—C2—H2 | 120.8 | N4—C35—H35 | 118.8 |
C1—C2—H2 | 120.8 | C36—C35—H35 | 118.8 |
C2—C3—C4 | 119.1 (3) | C37—C36—C35 | 118.7 (3) |
C2—C3—H3 | 120.4 | C37—C36—H36 | 120.6 |
C4—C3—H3 | 120.4 | C35—C36—H36 | 120.6 |
C3—C4—C5 | 119.3 (3) | C36—C37—C38 | 119.7 (3) |
C3—C4—H4 | 120.3 | C36—C37—H37 | 120.1 |
C5—C4—H4 | 120.3 | C38—C37—H37 | 120.1 |
N1—C5—C4 | 121.3 (3) | C37—C38—C39 | 118.8 (3) |
N1—C5—C6 | 115.1 (2) | C37—C38—H38 | 120.6 |
C4—C5—C6 | 123.7 (3) | C39—C38—H38 | 120.6 |
N2—C6—C7 | 120.9 (3) | N4—C39—C38 | 121.5 (3) |
N2—C6—C5 | 115.7 (2) | N4—C39—C40 | 115.0 (3) |
C7—C6—C5 | 123.3 (3) | C38—C39—C40 | 123.5 (3) |
C8—C7—C6 | 119.1 (3) | N5—C40—C41 | 121.1 (3) |
C8—C7—H7 | 120.4 | N5—C40—C39 | 115.6 (2) |
C6—C7—H7 | 120.4 | C41—C40—C39 | 123.3 (3) |
C7—C8—C9 | 119.9 (3) | C42—C41—C40 | 119.4 (3) |
C7—C8—H8 | 120.1 | C42—C41—H41 | 120.3 |
C9—C8—H8 | 120.1 | C40—C41—H41 | 120.3 |
C10—C9—C8 | 118.0 (3) | C43—C42—C41 | 119.3 (3) |
C10—C9—H9 | 121.0 | C43—C42—H42 | 120.4 |
C8—C9—H9 | 121.0 | C41—C42—H42 | 120.4 |
N2—C10—C9 | 122.5 (3) | C42—C43—C44 | 118.6 (3) |
N2—C10—H10 | 118.7 | C42—C43—H43 | 120.7 |
C9—C10—H10 | 118.7 | C44—C43—H43 | 120.7 |
O2—C11—O1 | 124.1 (3) | N5—C44—C43 | 122.2 (3) |
O2—C11—C12 | 119.0 (3) | N5—C44—H44 | 118.9 |
O1—C11—C12 | 116.9 (3) | C43—C44—H44 | 118.9 |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O9i | 0.93 | 2.46 | 3.299 (4) | 150 |
C9—H9···O7i | 0.93 | 2.54 | 3.291 (4) | 138 |
C38—H38···O11ii | 0.93 | 2.58 | 3.457 (4) | 157 |
C42—H42···O9iii | 0.93 | 2.42 | 3.259 (5) | 150 |
C43—H43···O8iii | 0.93 | 2.57 | 3.316 (4) | 138 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x, −y+1, −z; (iii) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | [Co2Tb(C4H5O2)6(NO3)(C10H8N2)2] |
Mr | 1161.64 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 11.3717 (6), 13.4396 (5), 16.3572 (8) |
α, β, γ (°) | 103.912 (2), 99.950 (2), 99.845 (3) |
V (Å3) | 2330.26 (19) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 2.28 |
Crystal size (mm) | 0.32 × 0.31 × 0.15 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.495, 0.709 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13172, 8051, 7272 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.025, 0.060, 1.03 |
No. of reflections | 8051 |
No. of parameters | 610 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.45, −0.87 |
Computer programs: RAPID-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2002), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O9i | 0.93 | 2.46 | 3.299 (4) | 150 |
C9—H9···O7i | 0.93 | 2.54 | 3.291 (4) | 138 |
C38—H38···O11ii | 0.93 | 2.58 | 3.457 (4) | 157 |
C42—H42···O9iii | 0.93 | 2.42 | 3.259 (5) | 150 |
C43—H43···O8iii | 0.93 | 2.57 | 3.316 (4) | 138 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x, −y+1, −z; (iii) −x+1, −y+1, −z. |
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The study of heterometallic complexes containing d-transition metal and lanthanide(III) cations connected by bridging ligands is being actively pursued because of their relevance in solid-state technology and as models for magnetic studies. As a contribution to a structural study of heterometallic complexes containing d-transition metal and rare-earth(III) cations (Wu & Guo, 2004; Zhu et al., 2005; Wu, 2008), herewith we report the synthesis and crystal structure of the title compound, (I).
The crystal structure of the title Co—Tb—Co trinuclear complex is similar to the known crystal structures of the Zn—Ce—Zn, Zn—Nd—Zn, Co—Gd—Co and Co—Ce—Co complexes (Wu & Guo, 2004; Zhu et al., 2005; Wu, 2008; Wu & Hou, 2010). The TbIII center is coordinated by six O atoms from six methacrylato ligands and two O atoms from nitrate anion in a distorted square-antiprismatic geometry. Each CoII ion is coordinated by three O atoms from three methacrylato ligands and two N atoms from 2,2'-bypiridine ligand in a distorted pyramidal geometry. The TbIII and each of two CoII ions are bridged by three bidentate methacrylato ligands. Two Tb···Co separations are almost equal. The separations of Tb···Co1 and Tb···Co2 are 3.937 (1) and 3.822 (1) Å, respectively.
In the crystal structure, π-π interactions between the aromatic rings [centroid-centroid distances of 3.682 (8) and 3.760 (8) Å, respectively] link molecules into chains propagated in direction [01–1]. The aromatic stacking interactions are responsible for the supramolecular assemblies. Weak intermolecular C—H···O hydrogen bonds stabilize further the crystal packing (Table 1).