Startseite Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2
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Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2

  • Jubrey M. Monareng und Hadley S. Clayton ORCID logo EMAIL logo
Veröffentlicht/Copyright: 15. Mai 2023

Abstract

C38H66Br2O2OsP2, triclinic, P 1 (no. 2), a = 10.4091(2) Å, b = 10.6868(2) Å, c = 21.3533(4) Å, α = 84.658(1)°, β = 89.764(1)°, γ = 64.918(1)°, V = 2140.36(7) Å3, Z = 2, R gt (F) = 0.0248, wR ref (F 2) = 0.0578, T = 173(2) K.

CCDC no.: 2252577

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: 0.67 × 0.42 × 0.21 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 5.08 mm−1
Diffractometer, scan mode: Bruker D8 Venture Photon, ω
θ max, completeness: 28.0°, >99 %
N(hkl)measured, N(hkl)unique, R int: 86,068, 10,330, 0.045
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 9863
N(param)refined: 433
Programs: Bruker [1], WinGX/ORTEP [2], SHELX [3], PLATON [4]
Table 2:

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

Atom x y z U iso*/U eq
C1 0.3073 (3) 0.1319 (3) 0.28233 (13) 0.0196 (6)
C2 0.2371 (3) 0.3738 (3) 0.22585 (13) 0.0188 (6)
C3 0.1641 (3) 0.1899 (3) 0.06258 (13) 0.0158 (5)
H3 0.11704 0.293547 0.060657 0.019*
C4 0.0419 (3) 0.1453 (3) 0.06191 (14) 0.0220 (6)
H4A 0.080441 0.04437 0.058065 0.026*
H4B −0.007931 0.163589 0.101974 0.026*
C5 −0.0630 (3) 0.2252 (4) 0.00674 (15) 0.0313 (8)
H5A −0.137942 0.191451 0.005647 0.038*
H5B −0.109013 0.324956 0.013343 0.038*
C6 0.0092 (4) 0.2087 (4) −0.05652 (16) 0.0344 (8)
H6A 0.040088 0.112015 −0.066934 0.041*
H6B −0.059811 0.271217 −0.089946 0.041*
C7 0.1366 (4) 0.2424 (4) −0.05471 (15) 0.0296 (7)
H7A 0.103938 0.342664 −0.050468 0.036*
H7B 0.186021 0.222471 −0.09479 0.036*
C8 0.2404 (3) 0.1578 (3) 0.00016 (13) 0.0224 (6)
H8A 0.322478 0.181721 0.000161 0.027*
H8B 0.276196 0.057438 −0.004554 0.027*
C9 0.4329 (3) 0.1596 (3) 0.11453 (13) 0.0167 (5)
H9 0.475104 0.100774 0.07945 0.02*
C10 0.3986 (3) 0.3091 (3) 0.08819 (15) 0.0226 (6)
H10A 0.354704 0.37231 0.121006 0.027*
H10B 0.329577 0.336895 0.052093 0.027*
C11 0.5334 (4) 0.3225 (4) 0.06676 (15) 0.0260 (7)
H11A 0.570701 0.267864 0.030503 0.031*
H11B 0.509621 0.420933 0.052674 0.031*
C12 0.6470 (4) 0.2715 (4) 0.11918 (16) 0.0269 (7)
H12A 0.613537 0.332036 0.153741 0.032*
H12B 0.733827 0.277323 0.10307 0.032*
C13 0.6821 (3) 0.1224 (3) 0.14452 (16) 0.0242 (6)
H13A 0.753411 0.093101 0.179811 0.029*
H13B 0.723611 0.060489 0.110983 0.029*
C14 0.5487 (3) 0.1088 (3) 0.16739 (14) 0.0191 (6)
H14A 0.512211 0.164101 0.203495 0.023*
H14B 0.572879 0.010424 0.181929 0.023*
C15 0.3373 (3) −0.0614 (3) 0.14722 (13) 0.0168 (5)
H15 0.252137 −0.078065 0.13773 0.02*
C16 0.4488 (4) −0.1397 (3) 0.10039 (15) 0.0250 (6)
H16A 0.415258 −0.095879 0.057077 0.03*
H16B 0.53873 −0.133169 0.109688 0.03*
C17 0.4757 (5) −0.2927 (4) 0.10453 (17) 0.0365 (9)
H17A 0.387738 −0.299434 0.091709 0.044*
H17B 0.550171 −0.341368 0.075151 0.044*
C18 0.5224 (5) −0.3627 (4) 0.17112 (18) 0.0430 (10)
H18A 0.616049 −0.365763 0.182106 0.052*
H18B 0.53251 −0.459361 0.173192 0.052*
C19 0.4151 (4) −0.2847 (3) 0.21833 (17) 0.0327 (8)
H19A 0.450325 −0.329069 0.26143 0.039*
H19B 0.324089 −0.289803 0.209994 0.039*
C20 0.3908 (3) −0.1331 (3) 0.21395 (14) 0.0206 (6)
H20A 0.480785 −0.127851 0.224577 0.025*
H20B 0.320195 −0.084293 0.244746 0.025*
C21 −0.1342 (3) 0.3090 (3) 0.33765 (13) 0.0173 (5)
H21 −0.086355 0.205798 0.337352 0.021*
C22 −0.2551 (3) 0.3592 (3) 0.28709 (14) 0.0205 (6)
H22A −0.316165 0.459286 0.288936 0.025*
H22B −0.21489 0.346833 0.244811 0.025*
C23 −0.3434 (4) 0.2769 (4) 0.29799 (16) 0.0279 (7)
H23A −0.284046 0.178549 0.291667 0.034*
H23B −0.423652 0.313323 0.266565 0.034*
C24 −0.4012 (4) 0.2848 (5) 0.36383 (17) 0.0350 (8)
H24A −0.473543 0.380326 0.367716 0.042*
H24B −0.447996 0.221207 0.37038 0.042*
C25 −0.2842 (4) 0.2456 (5) 0.41429 (16) 0.0374 (9)
H25A −0.218978 0.146075 0.414411 0.045*
H25B −0.326605 0.260012 0.456102 0.045*
C26 −0.2006 (4) 0.3334 (4) 0.40251 (15) 0.0292 (7)
H26A −0.125037 0.306743 0.435752 0.035*
H26B −0.264628 0.43295 0.403596 0.035*
C27 −0.0948 (3) 0.5617 (3) 0.29945 (13) 0.0178 (5)
H27 −0.178864 0.575584 0.272417 0.021*
C28 −0.1579 (4) 0.6381 (3) 0.35785 (15) 0.0273 (7)
H28A −0.205625 0.588658 0.38288 0.033*
H28B −0.080677 0.638591 0.384615 0.033*
C29 −0.2646 (4) 0.7874 (4) 0.33779 (16) 0.0321 (8)
H29A −0.345419 0.786282 0.313923 0.039*
H29B −0.301987 0.835716 0.375751 0.039*
C30 −0.1979 (4) 0.8667 (4) 0.29724 (17) 0.0328 (8)
H30A −0.126492 0.879811 0.322954 0.039*
H30B −0.272058 0.959587 0.281952 0.039*
C31 −0.1270 (4) 0.7895 (3) 0.24119 (16) 0.0297 (7)
H31A −0.076891 0.839143 0.218109 0.036*
H31B −0.200734 0.789085 0.212175 0.036*
C32 −0.0209 (3) 0.6394 (3) 0.26133 (15) 0.0235 (6)
H32A 0.019569 0.591607 0.223573 0.028*
H32B 0.057912 0.639273 0.287199 0.028*
C33 0.1015 (3) 0.3402 (3) 0.39277 (13) 0.0196 (6)
H33 0.029962 0.396531 0.422269 0.024*
C34 0.1606 (4) 0.1888 (4) 0.42206 (15) 0.0272 (7)
H34A 0.082933 0.158534 0.425142 0.033*
H34B 0.232749 0.128466 0.394568 0.033*
C35 0.2278 (4) 0.1729 (5) 0.48754 (16) 0.0414 (10)
H35A 0.153678 0.225723 0.516214 0.05*
H35B 0.269732 0.073824 0.504459 0.05*
C36 0.3428 (4) 0.2260 (6) 0.48490 (18) 0.0533 (13)
H36A 0.381572 0.218943 0.528007 0.064*
H36B 0.421311 0.167105 0.459558 0.064*
C37 0.2851 (4) 0.3747 (5) 0.45633 (17) 0.0438 (11)
H37A 0.362971 0.404735 0.453699 0.053*
H37B 0.212905 0.434715 0.483896 0.053*
C38 0.2179 (3) 0.3929 (4) 0.39040 (15) 0.0263 (7)
H38A 0.291804 0.340447 0.361562 0.032*
H38B 0.176466 0.492274 0.373979 0.032*
O1 0.4062 (2) 0.0673 (2) 0.31308 (11) 0.0275 (5)
O2 0.2958 (3) 0.4430 (3) 0.22720 (12) 0.0288 (5)
P1 0.27457 (7) 0.13132 (7) 0.13718 (3) 0.01277 (13)
P2 0.00499 (7) 0.36961 (8) 0.31623 (3) 0.01408 (13)
Br1 0.03599 (3) 0.07790 (3) 0.23555 (2) 0.01901 (6)
Br2 −0.05509 (3) 0.42259 (3) 0.15482 (2) 0.01927 (6)
Os1 0.15202 (2) 0.25086 (2) 0.22915 (2) 0.01191 (3)
C39 0.7773 (6) 0.1993 (8) 0.6295 (3) 0.0794 (19)
H39A 0.800665 0.112789 0.657573 0.095*
H39B 0.781932 0.269389 0.655582 0.095*
Cl1 0.6102 (2) 0.2562 (3) 0.60053 (8) 0.1335 (10)
Cl2 0.90602 (17) 0.1667 (2) 0.57297 (7) 0.0971 (7)

1 Source of materials

All reagents are commercially available and were used without further purification. The (NH4)2[OsBr6] (2.04 g, 2.89 mmol) and 2-ethoxyethanol (70 mL) were loaded into an autoclave which was then pressurised with 103 kPa carbon monoxide gas. The reaction mixture was heated to 140 °C with stirring for 48 h. To the filtered reaction mixture was added tricyclohexylphosphine (3.39 g, 12.1 mmol) and the solution was then heated to reflux for a further 3 h in a Schlenk tube under Ar. After cooling to room temperature a white precipitate was obtained which was isolated by filtration. The product was washed with hexane and dried in vacuo. The title compound was obtained as a white solid. Yield (2.57 g, 92 %). Crystals of the compound were obtained by slow evaporation, at ambient temperature, of a dichloromethane solution over several days. The title compound was obtained as a solvate with a molecule of dichloromethane.

2 Experimental details

Intensity data were determined on a Bruker D8 Venture with Photon III CCD area detector diffractometer at 173 K using an Oxford Cryostream 600 cooler. Data reduction was carried out using the program SAINT+, version 6.02 [1] and empirical absorption corrections were made using SADABS [1]. The structure was solved in the WinGX [2] suite of programs, using intrinsic phasing through SHELXT [3] and refined using full-matrix least-squares/difference Fourier techniques on F 2 using SHELXL-2018/3 [3]. All C-bound hydrogen atoms were placed at idealized positions and refined as riding atoms with isotropic parameters 1.2 times or 1.5 times those of their parent atoms. Diagrams and publication material were generated using ORTEP-3 [2], and PLATON [4].

3 Comment

The chemistry of osmium is of interest due to the potential of these complexes in the future development of therapeutic and diagnostic agents in cancer and other areas of medicine [5], [6], [7], [8]. The bioorganometallic properties of these complexes are directed by ligand effects, geometry, kinetic and thermodynamic properties of the complex as well as the oxidation state of the metal. The coordination architecture of these metal complexes provides a framework for structural diversity which allows for the design of new anticancer agents with novel mechanisms of action. The title compound is of interest because it contains labile bromide ligands as well as lipophilic tricyclohexylphosphine ligands. The cis-configuration of the labile halide ligands has been shown to be a key structural feature for anticancer activity [9].

The crystal structure of the title compound is isostructural with the cis,cis,trans-[OsF2(CO)2{P(C6H11)3}2] complex previously reported by Coleman et al. [10]. The osmium(II) metal ion is coordinated by two mutually trans, bulky tricyclohexylphosphine ligands in the axial positions to minimise steric interactions. The two bromide ligands and two carbonyl ligands are located in the equatorial plane in mutually cis positions. The Os—C=O moieties are distorted slightly from linearity with bond angles of 174.29° and 175.11° as a result of π back-bonding from osmium. All geometric parameters are in the expected ranges [11].

In the crystal, there is evidence of intramolecular interactions between hydrogen atoms of the PCy3 ligands and the bromide ligands. Nonbonding intramolecular interactions are observed between Br(1)…H(4B) at 2.890 Å, Br(1)…H(20B) at 2.718 Å, Br(2)…H(22B) at 2.818 and Br(2)…H(32A) at 2.778 Å. In addition, there is an intermolecular interaction observed between Br(1)…H(39A) at 2.912 Å. These noncovalent interactions contribute to the orientation of the tricyclohexylphosphine ligand and the packing arrangement in the crystal.


Corresponding author: Hadley S. Clayton, Chemistry Department, University of South Africa, Unisa Science Campus, Johannesburg, 1709, South Africa, E-mail:

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

  2. Research funding: None declared.

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

References

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Received: 2023-03-31
Accepted: 2023-04-26
Published Online: 2023-05-15
Published in Print: 2023-08-28

© 2023 the author(s), published by De Gruyter, Berlin/Boston

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

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  43. Synthesis and crystal structure (E)-1-(4-bromo-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C11H12BrNO2
  44. Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
  45. The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
  46. The crystal structure of 1-ethyl-2-nitro-imidazole oxide, C5H7N3O3
  47. The crystal structure of 2-(2-fluorophenyl)naphtho[2,1-d]thiazole, C17H10FNS
  48. Crystal structure of (E)-2,4-di-tert-butyl-6-(((2-fluorophenyl)imino) methyl)phenol, C21H26FNO
  49. Synthesis and crystal structure of 3-methyl-2-(methylthio)-4H-chromen-4-one, C12H12O2S
  50. Crystal structure of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-5,10-dione, C14H4O2S4
  51. The crystal structure of dimethyl 2,2ʹ-((adamantane-1,3-diylbis(4,1-phenylene)) bis(oxy))diacetate, C28H32O6
  52. The crystal structure of N-(6-chloro-2-methyl-2H-indazol-5-yl)acetamide, C10H10ClN3O
  53. Crystal structure of triaqua-(5-bromoisophthalato-κ1 O)-(2,2′-bipyridine-κ2 N:N′)nickel(II) hydrate, C18H19BrN2NiO8
  54. The crystal structure of 2-amino-4-carboxypyridin-1-ium perchlorate, C6H7ClN2O6
  55. The crystal structure of catena-poly[5-aminonicotinic acid-k1 N-m2-bromido-copper(I)], Cu(C6N2H6O2)Br
  56. The crystal structure of 2,2-bis(3-methoxyphenyl)-1-tosyl-1,2-dihydro- 4,3λ4  -[1,3,2]diazaborolo[4,5,1-ij]quinoline - dichloromethane (1/1)
  57. The crystal structure of catena-poly[bis(6-phenylpyridine-2-carboxylato-κ2 N,O)-(μ2-4,4′-bipyridne-κ2 N:N)cadmium(II)], C34H24N4O4Cd
  58. The crystal structure of 5,7-dinitropyrazolo[5,1-b]quinazolin-9(4H)-one, C10H5N5O5
  59. Crystal structure of rac-1,8-bis(2-carbamoylethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H46N6O2
  60. The crystal structure of (E)-N -(2-bromobenzylidene)-2-naphthohydrazide, C36H26Br2N4O2
  61. The crystal structure of 5-nitronaphthoquinone, C10H5NO4
  62. The crystal structure of (S, R p )-4–benzhydrylideneamino-12-(4-tert-butyl oxazolin-2-yl)[2.2]paracyclophane, C36H36N2O
  63. Synthesis and crystal structure of 2-(2-oxo-2-(o-tolyl)ethyl)-4H-chromen-4-one, C18H14O3
  64. Crystal structure of 2-(thiazol-2-yl)hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C11H10N2O3S
  65. Crystal structure of N-(diaminomethylene)-1-(dimethylamino)-1-iminiomethanaminium dichloride, C4H13Cl2N5
  66. Crystal structure of poly[(μ3-3, 5-dichloro-2-hydroxy-benzoato-κ4 Cl,O:O′:O″) silver(I)], C7H3AgCl2O3
  67. The crystal structure of tetrakis(1-isopropylimidazole-κ1 N)-[μ2- imidazole-4,5-dicarboxylato-κ4 O,N,O′,N′)]- trioxido-divanadium, C29H41N10O7V2
  68. Crystal structure of catena-[(μ3-bromido)-(1H-1,2,4-triazol-1-yl)benzoato-κ1 N)copper(I)], C9H7BrCuN3O2
  69. The crystal structure of (E)-4-fluoro-N′-(1-(2-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
Heruntergeladen am 7.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ncrs-2023-0153/html
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