Bis(η5-cyclo­penta­dien­yl)(2-{[(2-meth­oxy­phen­yl)imino]­meth­yl}phenolato-κ3O,N,O′)terbium

Minyaev, M.E.; Lyssenko, K.A.; Roitershtein, D.M.; Nifant'ev, I.E.

doi:10.1107/S2056989021013025

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Volume 78| Part 1| January 2022| Pages 44-46

https://doi.org/10.1107/S2056989021013025

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Bis(η⁵-cyclopentadienyl)(2-{[(2-methoxyphenyl)imino]methyl}phenolato-κ³O,N,O′)terbium

Mikhail E. Minyaev,^a,^b ^* Konstantin A. Lyssenko,^c Dmitrii M. Roitershtein ^a,^b and Ilya E. Nifant'ev ^c,^b

^aN.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow, 119991, Russian Federation, ^bA.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky prospect, Moscow, 119991, Russian Federation, and ^cChemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, Str., Building 3, Moscow, 119991, Russian Federation
^*Correspondence e-mail: mminyaev@ioc.ac.ru

Edited by A. V. Yatsenko, Moscow State University, Russia (Received 29 November 2021; accepted 7 December 2021; online 1 January 2022)

The air- and moisture-sensitive title compound, [Tb(C₅H₅)₂(C₁₄H₁₂NO₂)], was synthesized from tris(cyclopentadienyl)(tetrahydrofuran)terbium and 2-{[(2-methoxyphenyl)imino]methyl}phenol. Each Tb atom is coordinated by two cyclopentadienyl ligands in an η⁵-coordination mode and by one N and two O atoms of the organic ligand in a tridentate κ³O,N,O′-mode.

Keywords: lanthanide; terbium; bis(cyclopentadienyl); (methoxyphenyliminomethyl)phenolate; salicylimino; crystal structure.

CCDC reference: 2127087

1. Chemical context

Bis(cyclopentadienyl) complexes of rare-earth metals attract significant attention because of their important role in the development of organometallic chemistry of 4f elements (Schumann et al., 1995 ; Wedal & Evans, 2021 ; Evans, 2016 ). This type of complex is one of the first discovered organolanthanide classes (Maginn et al., 1963 ).

The vigorous interest in cyclopentadienyl complexes for the chemistry of rare-earth elements is mainly due to the simplicity of cyclopentadienyl ligand modification by replacing the hydrogen atoms of the five-membered ring with various organic fragments (Harder et al., 2013 ; Roitershtein, Puntus et al., 2018 ; Hou & Wakatsuki, 2002 ). Moreover, in the case of bis(cyclopentadienyl) derivatives such as (C₅H₅)₂LnX, the additional anionic ligand X⁻ can be coordinated in a mono-, bi- or, as in the present case, a tridentate mode. Such a combination of ligands provides an extremely broad structural diversity for cyclopentadienyl derivatives (Edelmann & Poremba, 1997 ; Goodwin et al., 2018 ). This report describes the synthesis and crystal structure of bis(η⁵-cyclopentadienyl)(2-{[(2-methoxyphenyl)imino]methyl}phenolato)terbium, which is a product of the partial protonation of the tris(cyclopentadienyl)terbium complex with 2-{[(2-methoxyphenyl)imino]methyl}phenol (Fig. 1).

Figure 1
Synthesis of the title compound.

2. Structural commentary

The title compound (Fig. 2) crystallizes in the orthorhombic Pbcn space group (Z′ = 1). Assuming that each cyclopentadienyl ligand donates three electron pairs, the terbium atom may be considered to be ennea-coordinated. Both cyclopentadienyl ligands are nearly symmetrically η⁵-coordinated to the Tb³⁺ cation. Thus, the Cp_(centroid)—Tb distances [2.4207 (11) Å for the C1–C5 Cp ring and 2.4062 (10) Å for the C6–C10 Cp ring] are almost equal to the Cp_(plane)—Tb distances [2.4196 (11) Å for C1–C5 Cp ring and 2.4054 (10) for C6–C10 Cp ring], and the C_Cp—Tb bond lengths are similar within each ring (Table 1). At the same time, the average C_Cp—Tb distance to the C1–C5 ring is longer by 0.011 Å than to the second Cp ligand. Such a slight asymmetry is caused by the presence of the tridentate asymmetric 2-{[(2-methoxyphenyl)imino]methyl}phenolate (L⁻) ligand. Atoms of the ligand are situated in two planes formed by the following sets of atoms: O1, C11–C16, N1, C24 (r.m.s. deviation = 0.0167 Å) and O2, C17–C23, N1 (r.m.s. deviation = 0.0333 Å). The dihedral angle between these planes of 44.58 (5)° indicates a perceptible loss of conjugation between two parts of the ligand due to the tridentate κ³N,O,O′-coordination mode. The bond redistribution within the ligand (see table in the supporting information) and the Tb—O and Tb—N bond distances (Table 1) are in good agreement with the expected predominant resonance form (see scheme) and with a significant localization of the negative charge on the O2 atom.

Table 1
Selected bond lengths (Å)

Tb1—C1	2.721 (3)	Tb1—C8	2.662 (2)
Tb1—C2	2.678 (3)	Tb1—C9	2.691 (2)
Tb1—C3	2.670 (2)	Tb1—C10	2.717 (2)
Tb1—C4	2.704 (2)	Tb1—O1	2.5468 (15)
Tb1—C5	2.726 (3)	Tb1—O2	2.2034 (16)
Tb1—C6	2.700 (2)	Tb1—N1	2.4748 (18)
Tb1—C7	2.675 (2)

Figure 2
The title compound with displacement ellipsoids drawn at the 50% probability level.

It should be noted that analogous compounds with the same L⁻ ligand [(C₅H₅)₂Ln(O₂NC₁₄H₁₂)] (Ln = Sm, Er, Dy, Y) were previously synthesized in low yields (Yousaf et al., 2000 ), and the determined crystal structure of the Sm complex is isostructural with that of the title compound.

Non-covalent interactions are negligible in the title compund.

3. Database survey

At first glance, it looks quite puzzling that according to the Cambridge Structural Database (CSD Version 5.42, update of September 2021; Groom et al., 2016 ), structures of rare-earth metal complexes with the monoanionic phenolate L⁻ ligand and its substituted (L′⁻) or protonated (LH) derivatives have been poorly studied, whereas the structures of complexes bearing their closest analogs – doubly charged 2-{[(2-oxidophenyl)imino]methyl}phenolate and its various derivatives – have been studied moderately. This is, likely, due to the higher stability of the latter complexes, which is presumably caused, in short, by a higher degree of the optimization of electrostatic interactions (Evans, 1987 ). Thus, only 15 complexes bearing L^-, L′⁻, LH and L′H ligands have been studied structurally; the corresponding CSD codes are KESHOH (Li & Yuan, 2012 ), KINHUN, KINJAV, KINJEZ, KINJID, KINJOJ (Roitershtein, Minashina et al., 2018 ), MIQTAH01 (Yousaf et al., 2000), RAPTUA (Li & Cui, 2017 ), RUQQEC (Pikoli et al., 2020 ), VUVMUX, VUVNAE (Long et al., 2020 ) and the heterometallic Zn/Dy complexes TUQWAG, TUQWEK, TUQWIO, TUQWOU (Shukla et al., 2020 ). Careful analysis reveals the structural diversity of the coordination modes for L⁻, L′⁻, LH and L′H ligands in the above-mentioned complexes. Even the sole ligand L⁻ itself can demonstrate different coordination modes in mononuclear rare-earth complexes (Roitershtein, Minashina et al., 2018). Amazingly, only one structure (MIQTAH01) among the 15 corresponds to the organolanthanide bis(cyclopentadienyl) type.

4. Synthesis and crystallization

Synthetic operations were carried out in a glovebox under a purified argon atmosphere. THF was distilled from sodium/benzophenone ketyl, hexane was distilled from Na/K alloy. Tb(C₅H₅)₃(thf) was obtained according to a literature procedure (Wilkinson & Birmingham, 1954 ).

A solution of 2-{[(2-methoxyphenyl)imino]methyl}phenol (0.230 g, 1.01mmol) in 5 ml of THF was added slowly to a solution of Tb(C₅H₅)₃(thf) (0.426g, 1.0 mmol) in 15 ml of THF. The reaction mixture was stirred for 24 h. The solution was concentrated under vacuum to a volume of ca 8–10 ml, and hexane (10 ml) was carefully layered on top of the resulting solution to initiate crystallization. Crystals obtained after several days were dried under dynamic vacuum for 1 h, yielding 0.315 g (0.61 mmol, 61%). The terbium content was determined by direct complexometric titration with the disodium salt of EDTA, using xylenol orange indicator (Vogel, 1966 ). Calculated for C₂₄H₂₂NO₂Tb: Tb, 30.84%. Found Tb, 30.45%.

Single crystals suitable for X-ray diffraction study were taken from a vial with a crude product before drying under vacuum.

5. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2. The structure was in general solved by dual methods (SHELXT; Sheldrick, 2015a ). Positions of remaining non-H atoms were found from the difference electron density maps. All non-H atoms were refined anisotropically. The positions of hydrogen atoms were refined with U_iso(H) = 1.5U_eq(C) for methyl group and U_iso(H) = 1.2U_eq(C) for others.

Table 2
Experimental details

Crystal data
Chemical formula	[Tb(C₅H₅)₂(C₁₄H₁₂NO₂)]
M_r	515.34
Crystal system, space group	Orthorhombic, Pbcn
Temperature (K)	120
a, b, c (Å)	21.6309 (12), 14.4923 (8), 12.6471 (7)
V (Å³)	3964.6 (4)
Z	8
Radiation type	Mo Kα
μ (mm⁻¹)	3.59
Crystal size (mm)	0.32 × 0.21 × 0.19

Data collection
Diffractometer	Bruker APEXII CCD area detector
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 )
T_min, T_max	0.333, 0.569
No. of measured, independent and observed [I > 2σ(I)] reflections	60268, 7485, 5865
R_int	0.062
(sin θ/λ)_max (Å⁻¹)	0.766

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.025, 0.060, 1.03
No. of reflections	7485
No. of parameters	319
H-atom treatment	Only H-atom coordinates refined
Δρ_max, Δρ_min (e Å⁻³)	1.14, −0.71
Computer programs: APEX2 and SAINT (Bruker, 2016 ), SHELXT (Sheldrick, 2015a), SHELXL2018 (Sheldrick, 2015b ), Mercury (Macrae et al., 2020 ) and publCIF (Westrip, 2010 ).

Supporting information

CCDC reference: 2127087

Crystal structure: contains datablock I. DOI: https://doi.org/10.1107/S2056989021013025/yk2162sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989021013025/yk2162Isup2.hkl

Supporting information file. DOI: https://doi.org/10.1107/S2056989021013025/yk2162Isup3.cdx

checkCIF report

Computing details top

Data collection: APEX2 (Bruker, 2016); cell refinement: SAINT (Bruker, 2016); data reduction: SAINT (Bruker, 2016); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2018 (Sheldrick, 2015b); molecular graphics: Mercury (Macrae et al., 2020); software used to prepare material for publication: publCIF (Westrip, 2010).

Bis(η⁵-cyclopentadienyl)(2-{[(2-methoxyphenyl)imino]methyl}phenolato-κ³O,N,O')terbium top

Crystal data top

[Tb(C₅H₅)₂(C₁₄H₁₂NO₂)]	D_x = 1.727 Mg m⁻³
M_r = 515.34	Mo Kα radiation, λ = 0.71073 Å
Orthorhombic, Pbcn	Cell parameters from 5648 reflections
a = 21.6309 (12) Å	θ = 2.2–30.2°
b = 14.4923 (8) Å	µ = 3.59 mm⁻¹
c = 12.6471 (7) Å	T = 120 K
V = 3964.6 (4) Å³	Block, yellow
Z = 8	0.32 × 0.21 × 0.19 mm
F(000) = 2032

Data collection top

Bruker APEXII CCD area detector diffractometer	7485 independent reflections
Radiation source: sealed X-ray tube	5865 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.062
Detector resolution: 7.31 pixels mm^-1	θ_max = 33.0°, θ_min = 1.7°
ω scans	h = −33→33
Absorption correction: multi-scan (SADABS; Krause et al., 2015)	k = −22→21
T_min = 0.333, T_max = 0.569	l = −19→19
60268 measured reflections

Refinement top

Refinement on F²	Primary atom site location: dual
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.025	Hydrogen site location: difference Fourier map
wR(F²) = 0.060	Only H-atom coordinates refined
S = 1.03	w = 1/[σ²(F_o²) + (0.0212P)² + 3.2936P] where P = (F_o² + 2F_c²)/3
7485 reflections	(Δ/σ)_max = 0.004
319 parameters	Δρ_max = 1.14 e Å⁻³
0 restraints	Δρ_min = −0.71 e Å⁻³

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
Tb1	0.65689 (2)	0.77625 (2)	0.32099 (2)	0.01273 (3)
O1	0.61771 (7)	0.82735 (11)	0.50164 (12)	0.0193 (3)
O2	0.63302 (8)	0.67000 (11)	0.20325 (12)	0.0190 (3)
N1	0.56840 (8)	0.68915 (12)	0.39465 (14)	0.0144 (3)
C1	0.74352 (13)	0.7329 (2)	0.4689 (2)	0.0378 (7)
H1	0.7343 (16)	0.741 (2)	0.539 (3)	0.045*
C2	0.77065 (12)	0.7984 (2)	0.4006 (2)	0.0328 (6)
H2	0.7832 (15)	0.859 (2)	0.415 (3)	0.039*
C3	0.77899 (11)	0.75538 (19)	0.3010 (2)	0.0259 (5)
H3	0.7968 (14)	0.786 (2)	0.242 (3)	0.031*
C4	0.75698 (12)	0.66501 (19)	0.3091 (2)	0.0263 (5)
H4	0.7546 (14)	0.620 (2)	0.256 (2)	0.032*
C5	0.73448 (13)	0.6512 (2)	0.4122 (2)	0.0337 (6)
H5	0.7166 (15)	0.594 (2)	0.432 (3)	0.040*
C6	0.65210 (11)	0.96160 (15)	0.3007 (2)	0.0225 (5)
H6	0.6687 (13)	0.996 (2)	0.354 (2)	0.027*
C7	0.68593 (11)	0.92900 (15)	0.2132 (2)	0.0223 (5)
H7	0.7266 (14)	0.941 (2)	0.203 (2)	0.027*
C8	0.64535 (11)	0.87859 (16)	0.1473 (2)	0.0209 (4)
H8	0.6550 (12)	0.851 (2)	0.083 (2)	0.025*
C9	0.58601 (11)	0.88127 (15)	0.19414 (19)	0.0201 (4)
H9	0.5500 (14)	0.850 (2)	0.168 (2)	0.024*
C10	0.59022 (11)	0.93258 (15)	0.2884 (2)	0.0208 (4)
H10	0.5580 (14)	0.943 (2)	0.334 (2)	0.025*
C11	0.55636 (10)	0.80986 (14)	0.52484 (17)	0.0157 (4)
C12	0.53032 (10)	0.73486 (13)	0.47039 (16)	0.0141 (4)
C13	0.46845 (10)	0.71343 (15)	0.48786 (17)	0.0180 (4)
H13	0.4491 (12)	0.6662 (19)	0.448 (2)	0.022*
C14	0.43354 (11)	0.76366 (17)	0.55984 (19)	0.0224 (5)
H14	0.3905 (14)	0.750 (2)	0.569 (2)	0.027*
C15	0.46002 (11)	0.83688 (17)	0.61333 (19)	0.0227 (5)
H15	0.4355 (14)	0.875 (2)	0.657 (2)	0.027*
C16	0.52167 (11)	0.86056 (16)	0.59584 (18)	0.0209 (4)
H16	0.5394 (13)	0.907 (2)	0.632 (2)	0.025*
C17	0.55750 (10)	0.60229 (15)	0.37651 (17)	0.0165 (4)
H17	0.5284 (12)	0.5710 (19)	0.420 (2)	0.020*
C18	0.58451 (10)	0.54572 (14)	0.29562 (16)	0.0158 (4)
C19	0.61933 (10)	0.58261 (14)	0.20989 (17)	0.0157 (4)
C20	0.63711 (12)	0.52071 (16)	0.12895 (18)	0.0204 (4)
H20	0.6584 (12)	0.547 (2)	0.071 (2)	0.025*
C21	0.62280 (12)	0.42804 (16)	0.1339 (2)	0.0221 (5)
H21	0.6372 (14)	0.391 (2)	0.081 (2)	0.027*
C22	0.58962 (12)	0.39198 (16)	0.2186 (2)	0.0235 (5)
H22	0.5803 (13)	0.332 (2)	0.222 (2)	0.028*
C23	0.57048 (12)	0.45061 (15)	0.29754 (19)	0.0213 (4)
H23	0.5481 (13)	0.431 (2)	0.356 (2)	0.026*
C24	0.64613 (13)	0.9021 (2)	0.5605 (2)	0.0310 (6)
H24A	0.6895 (17)	0.903 (2)	0.538 (3)	0.046*
H24B	0.6416 (16)	0.886 (3)	0.632 (3)	0.046*
H24C	0.6246 (16)	0.961 (3)	0.547 (3)	0.046*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Tb1	0.01162 (5)	0.01062 (4)	0.01596 (5)	0.00074 (3)	−0.00014 (3)	0.00054 (3)
O1	0.0168 (7)	0.0194 (7)	0.0216 (8)	−0.0033 (6)	0.0009 (6)	−0.0079 (6)
O2	0.0274 (8)	0.0121 (6)	0.0176 (7)	−0.0002 (6)	0.0015 (6)	0.0001 (6)
N1	0.0164 (8)	0.0135 (8)	0.0135 (8)	0.0009 (6)	−0.0009 (6)	−0.0010 (6)
C1	0.0269 (13)	0.065 (2)	0.0213 (12)	0.0232 (14)	−0.0049 (10)	0.0018 (13)
C2	0.0179 (11)	0.0381 (15)	0.0423 (16)	0.0055 (10)	−0.0116 (11)	−0.0095 (12)
C3	0.0139 (10)	0.0319 (12)	0.0319 (14)	0.0049 (9)	0.0009 (9)	0.0066 (10)
C4	0.0198 (11)	0.0269 (12)	0.0320 (13)	0.0116 (9)	0.0036 (10)	0.0012 (10)
C5	0.0260 (13)	0.0354 (15)	0.0397 (15)	0.0159 (11)	0.0072 (11)	0.0163 (12)
C6	0.0237 (11)	0.0112 (9)	0.0325 (13)	−0.0014 (8)	−0.0047 (9)	−0.0005 (8)
C7	0.0174 (10)	0.0147 (9)	0.0346 (13)	−0.0013 (8)	0.0004 (9)	0.0095 (9)
C8	0.0255 (12)	0.0155 (10)	0.0216 (10)	0.0045 (8)	0.0013 (9)	0.0045 (8)
C9	0.0192 (10)	0.0136 (9)	0.0273 (12)	0.0011 (8)	−0.0046 (9)	0.0015 (8)
C10	0.0203 (11)	0.0142 (9)	0.0280 (11)	0.0036 (8)	0.0018 (9)	0.0000 (8)
C11	0.0167 (9)	0.0151 (9)	0.0153 (9)	0.0001 (7)	−0.0011 (7)	−0.0015 (7)
C12	0.0162 (9)	0.0141 (9)	0.0119 (8)	0.0002 (7)	0.0006 (7)	0.0016 (7)
C13	0.0161 (9)	0.0200 (10)	0.0179 (10)	−0.0028 (8)	−0.0008 (8)	0.0028 (8)
C14	0.0176 (10)	0.0267 (12)	0.0229 (11)	0.0015 (9)	0.0031 (8)	0.0054 (9)
C15	0.0248 (12)	0.0221 (11)	0.0213 (11)	0.0041 (9)	0.0067 (9)	−0.0007 (9)
C16	0.0258 (12)	0.0193 (10)	0.0175 (10)	0.0017 (9)	0.0010 (9)	−0.0039 (8)
C17	0.0182 (10)	0.0154 (9)	0.0160 (9)	−0.0015 (8)	0.0002 (8)	−0.0006 (7)
C18	0.0189 (10)	0.0131 (9)	0.0155 (9)	0.0000 (7)	−0.0015 (7)	−0.0006 (7)
C19	0.0191 (10)	0.0127 (9)	0.0153 (9)	0.0014 (7)	−0.0027 (8)	−0.0003 (7)
C20	0.0265 (11)	0.0183 (10)	0.0165 (10)	0.0033 (9)	0.0004 (9)	−0.0024 (8)
C21	0.0260 (12)	0.0173 (10)	0.0230 (11)	0.0048 (9)	−0.0029 (9)	−0.0071 (9)
C22	0.0285 (12)	0.0136 (10)	0.0286 (12)	−0.0002 (9)	−0.0041 (10)	−0.0042 (9)
C23	0.0265 (12)	0.0136 (9)	0.0237 (11)	−0.0020 (8)	0.0012 (9)	−0.0005 (8)
C24	0.0270 (13)	0.0335 (14)	0.0324 (14)	−0.0105 (11)	0.0005 (11)	−0.0180 (11)

Geometric parameters (Å, º) top

Tb1—C1	2.721 (3)	C7—H7	0.91 (3)
Tb1—C2	2.678 (3)	C8—C9	1.414 (3)
Tb1—C3	2.670 (2)	C8—H8	0.93 (3)
Tb1—C4	2.704 (2)	C9—C10	1.408 (3)
Tb1—C5	2.726 (3)	C9—H9	0.96 (3)
Tb1—C6	2.700 (2)	C10—H10	0.91 (3)
Tb1—C7	2.675 (2)	C11—C16	1.382 (3)
Tb1—C8	2.662 (2)	C11—C12	1.405 (3)
Tb1—C9	2.691 (2)	C12—C13	1.392 (3)
Tb1—C10	2.717 (2)	C13—C14	1.389 (3)
Tb1—O1	2.5468 (15)	C13—H13	0.95 (3)
Tb1—O2	2.2034 (16)	C14—C15	1.383 (4)
Tb1—N1	2.4748 (18)	C14—H14	0.96 (3)
O1—C11	1.383 (3)	C15—C16	1.395 (3)
O1—C24	1.451 (3)	C15—H15	0.95 (3)
O2—C19	1.303 (3)	C16—H16	0.90 (3)
N1—C17	1.301 (3)	C17—C18	1.435 (3)
N1—C12	1.427 (3)	C17—H17	0.95 (3)
C1—C5	1.398 (5)	C18—C23	1.412 (3)
C1—C2	1.411 (5)	C18—C19	1.424 (3)
C1—H1	0.91 (4)	C19—C20	1.414 (3)
C2—C3	1.417 (4)	C20—C21	1.380 (3)
C2—H2	0.94 (3)	C20—H20	0.95 (3)
C3—C4	1.397 (4)	C21—C22	1.392 (4)
C3—H3	0.94 (3)	C21—H21	0.91 (3)
C4—C5	1.406 (4)	C22—C23	1.375 (3)
C4—H4	0.93 (3)	C22—H22	0.90 (3)
C5—H5	0.95 (3)	C23—H23	0.92 (3)
C6—C7	1.408 (4)	C24—H24A	0.98 (4)
C6—C10	1.412 (3)	C24—H24B	0.94 (4)
C6—H6	0.92 (3)	C24—H24C	0.98 (4)
C7—C8	1.413 (4)

O2—Tb1—N1	73.54 (6)	C3—C2—H2	123 (2)
O2—Tb1—O1	137.01 (6)	Tb1—C2—H2	117 (2)
N1—Tb1—O1	63.47 (5)	C4—C3—C2	107.7 (2)
O2—Tb1—C8	79.04 (7)	C4—C3—Tb1	76.25 (14)
N1—Tb1—C8	121.49 (7)	C2—C3—Tb1	74.94 (14)
O1—Tb1—C8	123.16 (6)	C4—C3—H3	129.4 (19)
O2—Tb1—C3	95.09 (8)	C2—C3—H3	122.9 (19)
N1—Tb1—C3	137.96 (7)	Tb1—C3—H3	115.1 (19)
O1—Tb1—C3	116.54 (7)	C3—C4—C5	108.6 (3)
C8—Tb1—C3	94.46 (8)	C3—C4—Tb1	73.62 (14)
O2—Tb1—C7	106.80 (7)	C5—C4—Tb1	75.87 (14)
N1—Tb1—C7	142.72 (7)	C3—C4—H4	128.1 (19)
O1—Tb1—C7	107.14 (7)	C5—C4—H4	123.2 (19)
C8—Tb1—C7	30.72 (8)	Tb1—C4—H4	114.2 (19)
C3—Tb1—C7	79.24 (8)	C1—C5—C4	107.9 (3)
O2—Tb1—C2	123.58 (8)	C1—C5—Tb1	74.94 (15)
N1—Tb1—C2	129.07 (8)	C4—C5—Tb1	74.11 (14)
O1—Tb1—C2	86.20 (8)	C1—C5—H5	131 (2)
C8—Tb1—C2	109.23 (9)	C4—C5—H5	121 (2)
C3—Tb1—C2	30.71 (9)	Tb1—C5—H5	116 (2)
C7—Tb1—C2	82.91 (9)	C7—C6—C10	107.9 (2)
O2—Tb1—C9	81.89 (6)	C7—C6—Tb1	73.80 (13)
N1—Tb1—C9	94.15 (6)	C10—C6—Tb1	75.54 (13)
O1—Tb1—C9	100.42 (6)	C7—C6—H6	124.0 (18)
C8—Tb1—C9	30.63 (7)	C10—C6—H6	128.1 (18)
C3—Tb1—C9	124.84 (8)	Tb1—C6—H6	117.5 (19)
C7—Tb1—C9	50.34 (7)	C6—C7—C8	108.3 (2)
C2—Tb1—C9	132.83 (9)	C6—C7—Tb1	75.84 (13)
O2—Tb1—C6	128.45 (7)	C8—C7—Tb1	74.15 (13)
N1—Tb1—C6	120.91 (7)	C6—C7—H7	123.9 (18)
O1—Tb1—C6	77.49 (7)	C8—C7—H7	127.8 (18)
C8—Tb1—C6	50.48 (8)	Tb1—C7—H7	117.4 (19)
C3—Tb1—C6	98.14 (8)	C7—C8—C9	107.6 (2)
C7—Tb1—C6	30.36 (8)	C7—C8—Tb1	75.14 (13)
C2—Tb1—C6	87.23 (8)	C9—C8—Tb1	75.82 (13)
C9—Tb1—C6	50.12 (7)	C7—C8—H8	126.8 (17)
O2—Tb1—C4	74.52 (7)	C9—C8—H8	125.6 (17)
N1—Tb1—C4	109.64 (7)	Tb1—C8—H8	117.0 (18)
O1—Tb1—C4	119.34 (7)	C10—C9—C8	108.1 (2)
C8—Tb1—C4	111.18 (8)	C10—C9—Tb1	75.93 (13)
C3—Tb1—C4	30.13 (8)	C8—C9—Tb1	73.55 (13)
C7—Tb1—C4	106.08 (8)	C10—C9—H9	126.6 (17)
C2—Tb1—C4	49.96 (9)	C8—C9—H9	125.3 (17)
C9—Tb1—C4	139.49 (8)	Tb1—C9—H9	113.8 (17)
C6—Tb1—C4	128.21 (8)	C9—C10—C6	108.1 (2)
O2—Tb1—C10	110.85 (7)	C9—C10—Tb1	73.89 (13)
N1—Tb1—C10	94.13 (7)	C6—C10—Tb1	74.25 (13)
O1—Tb1—C10	73.55 (6)	C9—C10—H10	124.7 (18)
C8—Tb1—C10	50.25 (7)	C6—C10—H10	127.2 (18)
C3—Tb1—C10	127.23 (8)	Tb1—C10—H10	116.7 (18)
C7—Tb1—C10	50.00 (7)	C16—C11—O1	124.17 (19)
C2—Tb1—C10	116.40 (8)	C16—C11—C12	120.8 (2)
C9—Tb1—C10	30.19 (7)	O1—C11—C12	115.01 (18)
C6—Tb1—C10	30.20 (7)	C13—C12—C11	118.72 (19)
C4—Tb1—C10	156.04 (8)	C13—C12—N1	123.94 (19)
O2—Tb1—C1	117.67 (8)	C11—C12—N1	117.20 (19)
N1—Tb1—C1	98.98 (8)	C14—C13—C12	120.7 (2)
O1—Tb1—C1	71.32 (7)	C14—C13—H13	119.3 (16)
C8—Tb1—C1	139.49 (9)	C12—C13—H13	120.0 (16)
C3—Tb1—C1	50.03 (9)	C15—C14—C13	119.8 (2)
C7—Tb1—C1	112.31 (9)	C15—C14—H14	120.3 (18)
C2—Tb1—C1	30.29 (10)	C13—C14—H14	119.8 (18)
C9—Tb1—C1	158.87 (9)	C14—C15—C16	120.5 (2)
C6—Tb1—C1	108.76 (9)	C14—C15—H15	120.2 (19)
C4—Tb1—C1	49.39 (9)	C16—C15—H15	119.0 (19)
C10—Tb1—C1	131.47 (9)	C11—C16—C15	119.4 (2)
O2—Tb1—C5	88.02 (8)	C11—C16—H16	119.8 (19)
N1—Tb1—C5	88.73 (7)	C15—C16—H16	120.8 (18)
O1—Tb1—C5	91.07 (7)	N1—C17—C18	127.2 (2)
C8—Tb1—C5	141.00 (8)	N1—C17—H17	118.6 (16)
C3—Tb1—C5	49.89 (8)	C18—C17—H17	114.2 (16)
C7—Tb1—C5	128.41 (8)	C23—C18—C19	119.6 (2)
C2—Tb1—C5	49.83 (10)	C23—C18—C17	117.3 (2)
C9—Tb1—C5	168.24 (8)	C19—C18—C17	122.92 (19)
C6—Tb1—C5	136.49 (9)	O2—C19—C20	120.5 (2)
C4—Tb1—C5	30.02 (8)	O2—C19—C18	122.27 (19)
C10—Tb1—C5	160.96 (9)	C20—C19—C18	117.18 (19)
C1—Tb1—C5	29.74 (10)	C21—C20—C19	121.6 (2)
C11—O1—C24	115.77 (18)	C21—C20—H20	122.1 (19)
C11—O1—Tb1	117.16 (12)	C19—C20—H20	116.3 (19)
C24—O1—Tb1	122.42 (15)	C20—C21—C22	121.1 (2)
C19—O2—Tb1	133.53 (14)	C20—C21—H21	117.7 (19)
C17—N1—C12	117.59 (18)	C22—C21—H21	121.1 (19)
C17—N1—Tb1	124.56 (15)	C23—C22—C21	118.8 (2)
C12—N1—Tb1	117.54 (12)	C23—C22—H22	120.3 (19)
C5—C1—C2	108.3 (3)	C21—C22—H22	120.9 (19)
C5—C1—Tb1	75.32 (16)	C22—C23—C18	121.8 (2)
C2—C1—Tb1	73.17 (15)	C22—C23—H23	123.1 (18)
C5—C1—H1	125 (2)	C18—C23—H23	115.1 (18)
C2—C1—H1	127 (2)	O1—C24—H24A	105 (2)
Tb1—C1—H1	119 (2)	O1—C24—H24B	105 (2)
C1—C2—C3	107.5 (3)	H24A—C24—H24B	113 (3)
C1—C2—Tb1	76.54 (16)	O1—C24—H24C	111 (2)
C3—C2—Tb1	74.34 (14)	H24A—C24—H24C	113 (3)
C1—C2—H2	129 (2)	H24B—C24—H24C	110 (3)

C5—C1—C2—C3	−0.8 (3)	Tb1—O1—C11—C12	26.1 (2)
Tb1—C1—C2—C3	−68.51 (18)	C16—C11—C12—C13	1.1 (3)
C5—C1—C2—Tb1	67.73 (19)	O1—C11—C12—C13	−178.98 (18)
C1—C2—C3—C4	0.2 (3)	C16—C11—C12—N1	176.94 (19)
Tb1—C2—C3—C4	−69.85 (18)	O1—C11—C12—N1	−3.2 (3)
C1—C2—C3—Tb1	70.01 (18)	C17—N1—C12—C13	−32.4 (3)
C2—C3—C4—C5	0.5 (3)	Tb1—N1—C12—C13	153.66 (16)
Tb1—C3—C4—C5	−68.45 (18)	C17—N1—C12—C11	152.0 (2)
C2—C3—C4—Tb1	68.95 (17)	Tb1—N1—C12—C11	−21.9 (2)
C2—C1—C5—C4	1.1 (3)	C11—C12—C13—C14	−1.7 (3)
Tb1—C1—C5—C4	67.38 (18)	N1—C12—C13—C14	−177.2 (2)
C2—C1—C5—Tb1	−66.30 (19)	C12—C13—C14—C15	1.3 (3)
C3—C4—C5—C1	−1.0 (3)	C13—C14—C15—C16	−0.2 (4)
Tb1—C4—C5—C1	−67.94 (19)	O1—C11—C16—C15	180.0 (2)
C3—C4—C5—Tb1	66.96 (18)	C12—C11—C16—C15	−0.1 (3)
C10—C6—C7—C8	−0.8 (3)	C14—C15—C16—C11	−0.3 (4)
Tb1—C6—C7—C8	67.66 (16)	C12—N1—C17—C18	171.9 (2)
C10—C6—C7—Tb1	−68.48 (16)	Tb1—N1—C17—C18	−14.6 (3)
C6—C7—C8—C9	0.7 (3)	N1—C17—C18—C23	173.7 (2)
Tb1—C7—C8—C9	69.50 (16)	N1—C17—C18—C19	−12.3 (4)
C6—C7—C8—Tb1	−68.79 (16)	Tb1—O2—C19—C20	−146.18 (18)
C7—C8—C9—C10	−0.3 (3)	Tb1—O2—C19—C18	36.0 (3)
Tb1—C8—C9—C10	68.71 (16)	C23—C18—C19—O2	179.2 (2)
C7—C8—C9—Tb1	−69.03 (16)	C17—C18—C19—O2	5.2 (3)
C8—C9—C10—C6	−0.2 (3)	C23—C18—C19—C20	1.3 (3)
Tb1—C9—C10—C6	66.92 (16)	C17—C18—C19—C20	−172.6 (2)
C8—C9—C10—Tb1	−67.12 (16)	O2—C19—C20—C21	−179.6 (2)
C7—C6—C10—C9	0.6 (3)	C18—C19—C20—C21	−1.6 (3)
Tb1—C6—C10—C9	−66.68 (16)	C19—C20—C21—C22	0.7 (4)
C7—C6—C10—Tb1	67.31 (16)	C20—C21—C22—C23	0.7 (4)
C24—O1—C11—C16	2.4 (3)	C21—C22—C23—C18	−1.1 (4)
Tb1—O1—C11—C16	−154.05 (18)	C19—C18—C23—C22	0.1 (4)
C24—O1—C11—C12	−177.5 (2)	C17—C18—C23—C22	174.3 (2)

Funding information

Funding for this research was provided by: Russian Science Foundation (grant No. 17-13-01357).

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