Home Physical Sciences The crystal structure of bis{(μ2-3,3-dimethyl-1-phenylbut-1-en-2-yl)((dimethylamino)dimethylsilyl)amido-κ3N,N′:N′}dilithium, C32H54Li2N4Si2
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The crystal structure of bis{(μ2-3,3-dimethyl-1-phenylbut-1-en-2-yl)((dimethylamino)dimethylsilyl)amido-κ3N,N′:N′}dilithium, C32H54Li2N4Si2

  • Hong-Bo Tong ORCID logo and Meng-Liang Wang
Published/Copyright: April 14, 2021
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 236 Issue 4

Abstract

C32H54Li2N4Si2, monoclinic, P21/n (no. 14), a = 11.611(4) Å, b = 11.157(6) Å, c = 13.307(5) Å, β = 100.12(3)°, V = 1697.0(12) Å3, Z = 2, Rgt(F) = 0.0622, wRref(F2) = 0.1561, T = 213 K.

CCDC no.: 671708

The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Colourless block
Size:0.30 × 0.20 × 0.20 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.13 mm−1
Diffractometer, scan mode:Bruker SMART APEX II, φ and ω
θmax, completeness:25.0°, >99%
N(hkl)measured, N(hkl)unique, Rint:6768, 2982, 0.024
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2878
N(param)refined:199
Programs:Siemens [1], ORTEP-3 [2], SHELX [3], [4], [5]
Table 2:

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

AtomxyzUiso*/Ueq
Li10.5090 (4)0.0789 (4)0.0653 (3)0.0317 (10)
N10.36147 (18)−0.02269 (18)0.00870 (16)0.0262 (5)
N20.45798 (19)0.0373 (2)0.20620 (16)0.0312 (5)
Si10.34215 (6)−0.04527 (6)0.13059 (6)0.0272 (2)
C10.2707 (3)0.2271 (2)−0.0360 (2)0.0340 (6)
C20.1946 (3)0.3073 (3)−0.0014 (2)0.0441 (7)
H20.1142290.289556−0.0117570.053*
C30.2343 (3)0.4125 (3)0.0479 (3)0.0512 (9)
H30.1807000.4651280.0701180.061*
C40.3511 (3)0.4407 (3)0.0647 (3)0.0498 (8)
H40.3779990.5114090.0995180.060*
C50.4287 (3)0.3641 (3)0.0299 (2)0.0430 (7)
H50.5088120.3830990.0401220.052*
C60.3886 (3)0.2592 (2)−0.0200 (2)0.0360 (7)
H60.4424120.208271−0.0438720.043*
C70.2258 (2)0.1167 (3)−0.0896 (2)0.0355 (6)
H70.1620780.125252−0.1434840.043*
C80.2666 (2)0.0048 (2)−0.0693 (2)0.0296 (6)
C90.2019 (2)−0.1010 (3)−0.1301 (2)0.0376 (7)
C100.1335 (3)−0.0627 (4)−0.2349 (3)0.0578 (10)
H10A0.185061−0.019013−0.2718990.087*
H10B0.068690−0.011671−0.2254110.087*
H10C0.103798−0.133289−0.2735320.087*
C110.1145 (3)−0.1557 (3)−0.0684 (3)0.0508 (9)
H11A0.072321−0.220685−0.1069950.076*
H11B0.059627−0.094604−0.0553080.076*
H11C0.156609−0.186287−0.0040930.076*
C120.2888 (3)−0.1986 (3)−0.1472 (3)0.0509 (9)
C130.1986 (2)0.0090 (3)0.1588 (2)0.0395 (7)
H13A0.1775770.0834820.1225370.059*
H13B0.2052120.0223780.2315670.059*
H13C0.138785−0.0506800.1367530.059*
C140.3595 (3)−0.2044 (3)0.1753 (3)0.0436 (7)
H14A0.297399−0.2528480.1371450.065*
H14B0.355473−0.2081140.2474130.065*
H14C0.434654−0.2347760.1644590.065*
C150.4246 (3)0.1518 (3)0.2479 (2)0.0418 (7)
H15A0.3884020.1365310.3070420.063*
H15B0.3697040.1935700.1963580.063*
H15C0.4938330.2009140.2679520.063*
C160.5414 (3)−0.0256 (3)0.2841 (2)0.0482 (8)
H16A0.6046630.0282260.3117200.072*
H16B0.572831−0.0944840.2535730.072*
H16C0.501790−0.0521980.3385340.072*
H12A0.347 (3)−0.168 (3)−0.188 (2)0.046 (9)*
H12B0.246 (3)−0.267 (3)−0.182 (3)0.062 (10)*
H12C0.332 (3)−0.230 (3)−0.079 (3)0.057 (10)*

Source of material

All manipulations were carried out using standard Schlenk and glovebox techniques under an argon or nitrogen atmosphere. The title compound was synthesized according to literature methods [6–8]. To a solution of ((dimethylamino)dimethylsilyl)toluollithium (6 mmol) in diethyl ether(20 ml), tert-butyl nitrile (6 mmol) was added at ca. 273 K and the solution was stirred for 15 min and then kept stirring for 5 h at room temperature. The solvent was slowly concentrated under vacuum, crystals of the title compound were obtained within two days.

Experimental details

Coordinates of hydrogen atoms were refined without any constraints or restraints. Their Uiso values were set to 1.2Ueq of the parent atoms.

Comment

Amidinate compounds are well known and have played important role in searching for novel spectator ligands [6], [7], [8, 13]. Lappert and co-workers have prepared a variety of complexes including some main group elements and transition metals [9], [10], [11], [12]. Quite a long time ago we have got similar complexes [14], [15]. As part of an subsequent investigation of the chemical and physical properties of amidinate complexes, we have prepared the title complex, and present its structure here (the Figure).

The title compound is a centrosymmetric dimer which contains two NSiN fragments bonded to two central Li atoms. Thus it is a good spectator ligand to study its conjugation and chemical properties. The two amidinate ligands bound to two Li atoms, with Li–N bond lengths 2.081(5), 2.114(5) and 2.036(5) Å. The central Li atoms are part of three planes: two crystallographically identical four-membered planes (N1/Si1/N2/Li1 with RMS deviation = 0.0111 Å) and one central four-membered ring (N/Li with symmetry). The former plane encloses an angle of 45.7(3)° with the latter plane. And these three planes form a cascade-step configuration. Each lithium atom is surrounded by three nitrogen atoms. Some slightly different Li complexes have been found with similar configuration which have similar manner bonded to central Li atoms [8, 12, 14, 16].

Corresponding author: Hong-Bo Tong, Institute of Applied Chemistry, Shanxi University, Wucheng Rd. 92#, Taiyuan, Shanxi Province, P. R. China, E-mail:

Funding source: Key research and development projects in Shanxi Province

Award Identifier / Grant number: 201803D121040

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: We gratefully acknowledge support by Key research and development projects in Shanxi Province No. 201803D121040 for financial support.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-03-14
Accepted: 2021-03-30
Published Online: 2021-04-14
Published in Print: 2021-07-27

© 2021 Hong-Bo Tong and Meng-Liang Wang, published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  2. New Crystal Structures
  3. Crystal structure of poly[(μ2-aqua-tetraaqua-(μ3-glutarato-κ4O,O′:O′:O′′)-(μ5-glutarato-κ6O:O,O′:O′:O′′:O′′′)distrontium(II)], C10H22O13Sr2
  4. The crystal structure of acetato-κ1O-{(2-(2-(2-aminophenoxy)ethoxy)phenyl)(4-oxo-4-phenylbut-2-en-2-yl)amido-κ2N,N′,O}copper(II), C26H26CuN2O5
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https://doi.org/10.1515/ncrs-2021-0090
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of poly[(μ2-aqua-tetraaqua-(μ3-glutarato-κ4O,O′:O′:O′′)-(μ5-glutarato-κ6O:O,O′:O′:O′′:O′′′)distrontium(II)], C10H22O13Sr2
  4. The crystal structure of acetato-κ1O-{(2-(2-(2-aminophenoxy)ethoxy)phenyl)(4-oxo-4-phenylbut-2-en-2-yl)amido-κ2N,N′,O}copper(II), C26H26CuN2O5
  5. Crystal structure of dimethanolato-k2O:O-bis(1-((2-methyl-1H-benzo[d]imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κN)-bis(thiocyanato-κN)dicopper(II), C34H32Cu2N12O2S2
  6. Crystal structure of poly[diaqua-bis(μ2-3-(pyrimidin-5-yl)benzoato-κ2N:O)cobalt(II)] dihydrate, [Co(C11H11O2N2)2(H2O)2]
  7. Crystal structure of bis(3,3-dimethyl-1-phenylbut-1-en-2-yl)(trimethylsilyl)amido-k1N)zinc(II), Zn(C15H24NSi)2
  8. Crystal structure of catena-poly[(μ2-methanolato-κ2O:O)-(μ2-1-((2-methyl-1H-benzo[d]imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κ2N:N′)-(thiocyanato-κ1N)copper(II)] 0.25 hydrate, C17H16CuN6OS ⋅ 0.5H2O
  9. The crystal structure of 2-amino-5-nitroanilinium iodide monohydrate, C6H8IN3O2
  10. The crystal structure of 3-amino-5-carboxypyridin-1-ium perchlorate monohydrate, C6H9ClN2O7
  11. Crystal structure of 7-hydroxy-2,4-dimethoxy-9,10-dihydrophenanthrene from Arundina graminifolia, C16H16O3
  12. Crystal structure of 6,6′-((1E, 1′E)-(((1R, 2R)-1,2-diphenylethane-1,2-diyl) bis(azanylylidene))bis(methanylylidene))bis(2-ethylphenol), C32H32N2O2
  13. The crystal structure of 2-amino-5-carboxypyridin-1-ium iodide monohydrate, C6H9IN2O3
  14. The crystal structure of 2-(3,5-difluorophenyl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine, C16H11BF2N2
  15. Crystal structure of bis{(2-pyridinyl)-1-phenyl-1-isopropylmethanolato-κ2N,O}nickel, C30H32N2NiO2
  16. Crystal structure of poly[(m3-3-carboxyadamantane-1-carboxylato-κ3O:O′:O″)-(phenanthroline-κ2N,N′)sodium(II)], C24H23N2NaO4
  17. Crystal structure of 2-phenylethynyl-1,3,6,8-tetramethylBOPHY (BOPHY = bis(difluoroboron)-1,2-bis((1H-pyrrol-2-yl)methylene)hydrazine), C22H20B2F4N4
  18. Crystal structure of 4-tert-butyl-2-N-(2-pyridylmethyl)aminophenol, C16H20N2O
  19. The crystal structure of (3Z,3′Z)-4,4′-((1,4-phenylenebis(methylene))bis(azanediyl))bis(pent-3-en-2-one), C18H24N2O2
  20. Crystal structure of (morpholine-1-carbodithioato-κ2-S,S′)bis(triphenylphosphine-κ-P)gold(I), C41H38AuNOP2S2
  21. Crystal structure of 1,4-bis(4-bromobenzyl)-4-(4-chlorophenyl)-1,4-dihydropyridine-3-carbonitrile, C26H19Br2ClN2
  22. The crystal structure of fac-tricarbonyl (N′-benzoyl-N,N-diphenylcarbamimidothioato-κ2S,O)-(pyrazole-κN)rhenium(I) — methanol (1/1) C26H23O4N4SRe
  23. The crystal structure of Ba2Mn(SeO3)2Cl2 containing 1∞[Mn(SeO3)2Cl2]4− chains
  24. Crystal structure of 3,3′,3″-((1E,1′E,1″E)-((nitrilotris(ethane-2,1-diyl))tris(azaneylylidene)) tris(methaneylylidene))tris(4-hydroxy-1-naphthaldehyde) monohydrate, C42H36N4O6·H2O
  25. The crystal structure of 4-(6-acetyl-5-methyl-4,7-dihydrotetrazolo[1,5-a]pyrimidin-7-yl)benzonitrile, C14H12N6O
  26. Crystal structure of benzo[d][1,3]dioxol-5-yl-2-(6-methoxynaphthalen-2-yl)propanoate, C21H18O5
  27. The crystal structure of ethyl 5-methyl-7-(4-(phenylthio)phenyl)-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate, C20H19N5O2S
  28. Crystal structure of N′,N‴-((propane-2,2-diylbis(1H-pyrrole-5,2-diyl))bis(methaneylylidene))-di(isonicotinohydrazide)– water – dimethylformamide (1/4/2), C25H24N8O2·4H2O·2C3H7NO
  29. Synthesis and crystal structure of 4-(2,4-dinitrophenoxy)benzaldehyde, C13H8N2O6
  30. The crystal structure of 1-dodecylpyridin-1-ium bromide monohydrate, C17H32BrNO
  31. Crystal structure of (E)-amino(2-(4-(dimethylamino)benzylidene)hydrazineyl)methaniminium nitrate, C10H16N6O3
  32. Crystal structure of (E)-(2-((1H-pyrrol-2-yl)methylene)hydrazineyl)(amino)methaniminium nitrate monohydrate, C6H12N6O4
  33. The crystal structure of hexakis(1-propylimidazole-κ1N)copper(II) dichloride, C36H60Cl2CuN12
  34. The crystal structure of bis{(μ2-3,3-dimethyl-1-phenylbut-1-en-2-yl)((dimethylamino)dimethylsilyl)amido-κ3N,N′:N′}dilithium, C32H54Li2N4Si2
  35. The crystal structure of methyl 4-(1H-naphtho[1,8-de][1,3,2]diazaborinin-2(3H)-yl)benzoate, C18H15BN2O2
  36. Crystal structure of (E)-N-(1-((2-chlorothiazol-5-yl)methyl)pyridin-2(1H)-ylidene)-2,2,2-trifluoroacetamide, C11H7ClF3N3OS
  37. Crystal structure of N′, N‴-((propane-2,2-diylbis(1H-pyrrole-5,2-diyl))bis (methaneylylidene))di(picolinohydrazide) – water – methanol (1/1/1), C25H24N8O2·H2O·CH3OH
  38. Crystal structure of 3-(2-chloro-benzyl)-7-[4-(2-chloro-benzyl)-piperazin-1-yl]-5,6,8-trifluoro-3H-quinazolin-4-one, C26H21Cl2F3N4O
  39. Crystal structure of N1,N2-bis(2-fluorobenzyl)benzene-1,2-diamine,C20H18F2N2
  40. The crystal structure of 2-(benzo[d][1,3]dioxol-5-yl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine, C17H13BN2O2
  41. The crystal structure of 6,6′-((1E,1′E)-hydrazine-1,2-diylidenebis(methaneylylidene)) bis(2-bromo-4-nitrophenol) — dimethylsulfoxide (1/2), C14H8Br2N4O6⋅2(C2H6OS)
  42. Selective biocatalytic synthesis and crystal structure of (2R,6R)-hydroxyketaminium chloride, C13H17Cl2NO2
  43. Crystal structure of bis{tetraaqua-[μ3-1-(4-carboxylatophenyl)-5-methyl-1H-pyrazole-3-carboxylate-κ4N,O,O′,O″] [μ2-1-methyl-1H-pyrazole-3,5-dicarboxylate-κ3N,O:O]dicobalt(II)} dihydrate, C36H44Co4N8O26
  44. Crystal structure of diethyl-2,2′-naphthalene-2,3-diylbis(oxy)diacetate, C18H20O6
  45. Synthesis and crystal structure of poly[(μ3-2-(2-carboxylatophenyl)-1H-benzo[d]imidazole-5-carboxylato-κO,O′:O′;:O″, O″′)-(μ2-1-(4-(1Himidazol-1-yl)phenyl)-1H-imidazole-κ2N:N′)cadmium(II)], C27H18CdN6O4
  46. The crystal structure of catena-poly[diaqua-bis(μ2-2-((2-(2-phenylacetyl)hydrazineylidene)methyl)benzoato-κ2O:O')zinc(II)], C32H30N4O8Zn
  47. The crystal structure of 2-(3,4-dimethoxyphenyl)-2,3-dihydro-1H-naphtho [1,8-de][1,3,2]diazaborinine, C18H17BN2O2
  48. The crystal structure of hexakis(1-ethylimidazole-κ1N)nickel(II) dichloride – 1-ethylimidazole (1/2), C40H64Cl2NiN16
  49. Crystal structure of diaqua-bis(2,4-dinitrophenolato-κ2O,O′)copper(II) 1.5 hydrate, C12H13CuN4O13.5
  50. Crystal structure of N′,N‴-((1E,1′E)-((decane-1,10-diylbis(oxy))bis(2,1-phenylene)) bis(methaneylylidene))di(isonicotinohydrazide), C36H40N6O4
  51. The crystal structure of 2-[(R)-1-(naphthalen-1-yl)ethyl]-2,3,7,7a-tetrahydro-3a,6-epoxyisoindol-1(6H)-one, C19H20NO2
  52. Synthesis and crystal structure of (1E,2E)-3-(anthracen-9-yl)-1-(4-methoxyphenyl)prop-2-en-1-one oxime, C24H19NO2
  53. Synthesis and crystal structure of (2E,2′E)-3,3′-(1,3-phenylene)bis(1-(3-bromophenyl)prop-2-en-1-one), C24H16Br2O2
  54. The crystal structure of catena-poly[bis(µ2-1,2-bis((1H-imidazol-1-yl)methyl)benzene- κ2N:N′)-bis(nitrato-κO)copper(II)], C28H28N10O6Cu
  55. Synthesis and crystal structure of the novel chiral acetyl-3-thiophene-5-(9-anthryl)-2-pyrazoline, C23H18N2OS
  56. Crystal structure of (E)-3-(dimethylamino)-1-(thiophen-3-yl)prop-2-en-1-one, C9H11NOS
  57. Crystal structure of catena-poly[aqua-(4-iodopyridine-2,6-dicarboxylato-κ3N,O,O′)-(μ2-4-amino-4H-1,2,4-triazole-κ2N:N′) copper(II)], C9H8N5O5CuI
  58. Crystal structure of cyclopropane-1,2,3-triyltris(phenylmethanone), C24H18O3
  59. Crystal structure of bis(amino(thioureido)methaniminium) terephthalate, C12H18N8O4S2
  60. A three-dimensional Eu(III) framework in the crystal structure of dimethylaminium poly[dimethylformamide-κ1N)bis(μ4-terephthalato-κ4O:O′:O′′:O′′′)europium(III)] monohydrate, C21H25EuN2O10
  61. Crystal structure of 2-methoxyphenyl 2-(6-methoxynaphthalen-2-yl)propanoate, C21H20O4
  62. The crystal structure of Hexakis(diethylamido)dimolybdenum, Mo2(NEt2)6
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