metal-organic compounds
Bis(O-n-butyl dithiocarbonato-κ2S,S′)bis(pyridine-κN)manganese(II)
aDepartment of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan, bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and cDepartment of Chemistry, Youngstown State University, 1 University Plaza, Youngstown, Ohio 44555, USA
*Correspondence e-mail: zainudin@um.edu.my
The structure of the title manganese complex, [Mn(C5H9OS2)2(C5H5N)2] or [Mn(S2CO-n-Bu)2(C5H5N)2], consists of discrete monomeric entities with Mn2+ ions located on centres of inversion. The metal atom is coordinated by a six-coordinate trans-N2S4 donor set with the pyridyl N atoms located in the apical positions. The observed slight deviations from octahedral geometry are caused by the bite angle of the bidentate κ2-S2CO-n-Bu ligands [69.48 (1)°]. The O(CH2)3(CH3) chains of the O-n-butyl dithiocarbonate units are disordered over two sets of sites with an occupancy ratio of 0.589 (2):0.411 (2).
Related literature
For general background to the title complex, see: Alam et al. (2008); Tahir et al. (2010); Klevtsova & Glinskaya (1997); Câmpian et al. (2010); Kirichenko et al. (1994).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2002); cell SAINT-Plus (Bruker, 2002); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536811026523/rk2277sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811026523/rk2277Isup2.hkl
Sodium hydroxide (3.99 g, 0.1 mol) was dissolved in 250 ml n-butanol placed in a 500 ml oven dried round bottom flask fitted with reflux condenser, magnetic stirrer and vaccum line. Carbon disulfide (7.6 ml, 0.1 mol) was added dropwise to the
of sodium hydroxide over a period of 90 minutes. After stirring for one hour a clear yellow solution was formed. Mn(NO3)2.3H2O (11.64 g, 0.05 mole) was added directly into the reaction flask. The contents were stirred to dissolve the salt completely. About 30 ml of pyridine were added to give a light yellow solution and stirring was continued for another hour. Any insoluble matter was removed by filtration and slow evaporation of the reaction mixture at room temperature yielded 70% of the title compound in the form of yellow crystals. M.p. = 368 K. Elemental analyses: Found (Calc.) for: C 46.02 (46.99); H 5.33 (5.51); N 4.58 (5.47).Reflections 1 0 0 and 0 0 2 were partially obstructed by the beam stop and were omitted from the
The O(CH2)3(CH3) chain of the O-n-butyldithiocarbonato group is disordered over two positions with an occupancy ratio of 0.589 (2) to 0.411 (2). The C—O bond distance was restrained to be the same within a standard deviation of 0.02, and the ADPs of equivalent atoms were set to be identical. Hydrogen atoms were placed in calculated positions with C—H distances of 0.95, 0.99 and 0.99Å for aromatic, methyl and methylene H atoms, respectively, and were refined with an isotropic displacement parameter Uiso of 1.5 (methyl) or 1.2 times (aromatic) that of Ueq of the adjacent carbon atom. Methyl H atoms were allowed to rotate around the C—C bond axis at a fixed angle to best fit with the experimental electron density.Data collection: SMART (Bruker, 2002); cell
SAINT-Plus (Bruker, 2002); data reduction: SAINT-Plus (Bruker, 2002); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: publCIF (Westrip, 2010).[Mn(C5H9OS2)2(C5H5N)2] | F(000) = 534 |
Mr = 511.66 | Dx = 1.462 Mg m−3 |
Monoclinic, P21/c | Melting point: 368 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 10.9189 (17) Å | Cell parameters from 6031 reflections |
b = 6.0853 (9) Å | θ = 2.8–30.7° |
c = 17.650 (3) Å | µ = 0.95 mm−1 |
β = 97.536 (3)° | T = 100 K |
V = 1162.6 (3) Å3 | Block, yellow |
Z = 2 | 0.50 × 0.37 × 0.26 mm |
Bruker SMART APEX CCD diffractometer | 2871 independent reflections |
Radiation source: fine-focus sealed tube | 2797 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
ω scans | θmax = 28.3°, θmin = 2.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2003) | h = −14→14 |
Tmin = 0.630, Tmax = 0.782 | k = −8→8 |
11354 measured reflections | l = −23→23 |
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) = 0.064 | H-atom parameters constrained |
S = 1.12 | w = 1/[σ2(Fo2) + (0.0232P)2 + 0.6054P] where P = (Fo2 + 2Fc2)/3 |
2871 reflections | (Δ/σ)max = 0.001 |
151 parameters | Δρmax = 0.34 e Å−3 |
1 restraint | Δρmin = −0.50 e Å−3 |
[Mn(C5H9OS2)2(C5H5N)2] | V = 1162.6 (3) Å3 |
Mr = 511.66 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.9189 (17) Å | µ = 0.95 mm−1 |
b = 6.0853 (9) Å | T = 100 K |
c = 17.650 (3) Å | 0.50 × 0.37 × 0.26 mm |
β = 97.536 (3)° |
Bruker SMART APEX CCD diffractometer | 2871 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2003) | 2797 reflections with I > 2σ(I) |
Tmin = 0.630, Tmax = 0.782 | Rint = 0.028 |
11354 measured reflections |
R[F2 > 2σ(F2)] = 0.025 | 1 restraint |
wR(F2) = 0.064 | H-atom parameters constrained |
S = 1.12 | Δρmax = 0.34 e Å−3 |
2871 reflections | Δρmin = −0.50 e Å−3 |
151 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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) | |
C1 | 0.57264 (12) | 0.6534 (2) | 1.17119 (7) | 0.0219 (3) | |
H1A | 0.5302 | 0.7817 | 1.1516 | 0.026* | |
C2 | 0.61621 (13) | 0.6439 (2) | 1.24896 (7) | 0.0261 (3) | |
H2A | 0.6034 | 0.7634 | 1.2817 | 0.031* | |
C3 | 0.67842 (14) | 0.4574 (3) | 1.27770 (7) | 0.0282 (3) | |
H3A | 0.7083 | 0.4460 | 1.3306 | 0.034* | |
C4 | 0.69638 (13) | 0.2874 (2) | 1.22795 (8) | 0.0271 (3) | |
H4A | 0.7397 | 0.1585 | 1.2462 | 0.033* | |
C5 | 0.65016 (12) | 0.3084 (2) | 1.15104 (7) | 0.0224 (3) | |
H5A | 0.6627 | 0.1916 | 1.1172 | 0.027* | |
C6 | 0.72640 (11) | 0.6918 (2) | 0.95170 (6) | 0.0183 (2) | |
O1 | 0.8259 (9) | 0.7831 (13) | 0.9285 (10) | 0.0169 (10) | 0.589 (2) |
C7 | 0.9256 (16) | 0.674 (3) | 0.9020 (10) | 0.0235 (7) | 0.589 (2) |
H7A | 0.8944 | 0.5470 | 0.8700 | 0.028* | 0.589 (2) |
H7B | 0.9824 | 0.6178 | 0.9460 | 0.028* | 0.589 (2) |
C8 | 0.9949 (2) | 0.8301 (4) | 0.85523 (13) | 0.0212 (3) | 0.589 (2) |
H8A | 1.0637 | 0.7495 | 0.8364 | 0.025* | 0.589 (2) |
H8B | 0.9383 | 0.8804 | 0.8101 | 0.025* | 0.589 (2) |
C9 | 1.0467 (2) | 1.0298 (4) | 0.90058 (13) | 0.0232 (4) | 0.589 (2) |
H9A | 0.9792 | 1.1045 | 0.9228 | 0.028* | 0.589 (2) |
H9B | 1.1088 | 0.9809 | 0.9432 | 0.028* | 0.589 (2) |
C10 | 1.1062 (15) | 1.191 (2) | 0.8511 (9) | 0.0263 (14) | 0.589 (2) |
H10A | 1.1392 | 1.3158 | 0.8823 | 0.039* | 0.589 (2) |
H10B | 1.0444 | 1.2426 | 0.8097 | 0.039* | 0.589 (2) |
H10C | 1.1736 | 1.1174 | 0.8294 | 0.039* | 0.589 (2) |
O1B | 0.8163 (14) | 0.819 (2) | 0.9292 (15) | 0.0169 (10) | 0.411 (2) |
C7B | 0.920 (2) | 0.683 (4) | 0.9022 (14) | 0.0235 (7) | 0.411 (2) |
H7BA | 0.9431 | 0.5589 | 0.9372 | 0.028* | 0.411 (2) |
H7BB | 0.8949 | 0.6257 | 0.8500 | 0.028* | 0.411 (2) |
C8B | 1.0250 (3) | 0.8474 (5) | 0.90349 (19) | 0.0212 (3) | 0.411 (2) |
H8BA | 1.0947 | 0.7751 | 0.8827 | 0.025* | 0.411 (2) |
H8BB | 1.0537 | 0.8874 | 0.9573 | 0.025* | 0.411 (2) |
C9B | 0.9920 (3) | 1.0572 (6) | 0.85830 (19) | 0.0232 (4) | 0.411 (2) |
H9BA | 0.9239 | 1.1321 | 0.8798 | 0.028* | 0.411 (2) |
H9BB | 0.9617 | 1.0177 | 0.8047 | 0.028* | 0.411 (2) |
C10B | 1.102 (2) | 1.219 (3) | 0.8590 (13) | 0.0263 (14) | 0.411 (2) |
H10D | 1.0730 | 1.3545 | 0.8324 | 0.039* | 0.411 (2) |
H10E | 1.1663 | 1.1515 | 0.8331 | 0.039* | 0.411 (2) |
H10F | 1.1351 | 1.2532 | 0.9119 | 0.039* | 0.411 (2) |
Mn1 | 0.5000 | 0.5000 | 1.0000 | 0.01767 (8) | |
N1 | 0.58831 (10) | 0.48802 (18) | 1.12286 (6) | 0.0197 (2) | |
S1 | 0.61548 (3) | 0.86094 (5) | 0.978244 (17) | 0.01905 (8) | |
S2 | 0.71689 (3) | 0.41428 (5) | 0.953823 (19) | 0.02316 (9) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0267 (6) | 0.0216 (6) | 0.0180 (6) | −0.0082 (5) | 0.0053 (5) | −0.0013 (5) |
C2 | 0.0331 (7) | 0.0287 (7) | 0.0171 (6) | −0.0124 (6) | 0.0062 (5) | −0.0053 (5) |
C3 | 0.0327 (7) | 0.0350 (7) | 0.0159 (6) | −0.0152 (6) | −0.0006 (5) | 0.0009 (5) |
C4 | 0.0289 (7) | 0.0272 (7) | 0.0236 (6) | −0.0073 (6) | −0.0031 (5) | 0.0034 (5) |
C5 | 0.0248 (6) | 0.0224 (6) | 0.0200 (6) | −0.0068 (5) | 0.0025 (5) | −0.0012 (5) |
C6 | 0.0209 (6) | 0.0196 (6) | 0.0137 (5) | −0.0060 (5) | −0.0001 (4) | 0.0020 (4) |
O1 | 0.0140 (14) | 0.005 (3) | 0.0317 (5) | 0.0019 (17) | 0.0048 (12) | 0.006 (2) |
C7 | 0.0200 (14) | 0.0205 (13) | 0.0304 (7) | −0.0033 (11) | 0.0055 (8) | 0.0032 (8) |
C8 | 0.0172 (8) | 0.0231 (8) | 0.0237 (8) | −0.0035 (7) | 0.0040 (7) | 0.0021 (8) |
C9 | 0.0226 (9) | 0.0233 (8) | 0.0232 (9) | −0.0059 (7) | 0.0008 (6) | 0.0035 (7) |
C10 | 0.0269 (13) | 0.022 (3) | 0.031 (3) | −0.007 (2) | 0.0053 (16) | 0.003 (2) |
O1B | 0.0140 (14) | 0.005 (3) | 0.0317 (5) | 0.0019 (17) | 0.0048 (12) | 0.006 (2) |
C7B | 0.0200 (14) | 0.0205 (13) | 0.0304 (7) | −0.0033 (11) | 0.0055 (8) | 0.0032 (8) |
C8B | 0.0172 (8) | 0.0231 (8) | 0.0237 (8) | −0.0035 (7) | 0.0040 (7) | 0.0021 (8) |
C9B | 0.0226 (9) | 0.0233 (8) | 0.0232 (9) | −0.0059 (7) | 0.0008 (6) | 0.0035 (7) |
C10B | 0.0269 (13) | 0.022 (3) | 0.031 (3) | −0.007 (2) | 0.0053 (16) | 0.003 (2) |
Mn1 | 0.02238 (14) | 0.01829 (14) | 0.01273 (12) | −0.00792 (10) | 0.00374 (9) | −0.00022 (9) |
N1 | 0.0229 (5) | 0.0207 (5) | 0.0157 (5) | −0.0079 (4) | 0.0037 (4) | −0.0008 (4) |
S1 | 0.02207 (16) | 0.01559 (14) | 0.01983 (15) | −0.00504 (11) | 0.00407 (11) | 0.00058 (11) |
S2 | 0.02738 (17) | 0.01555 (15) | 0.02887 (17) | −0.00708 (12) | 0.01235 (13) | −0.00299 (12) |
C1—N1 | 1.3447 (17) | C9—H9B | 0.9900 |
C1—C2 | 1.3937 (17) | C10—H10A | 0.9800 |
C1—H1A | 0.9500 | C10—H10B | 0.9800 |
C2—C3 | 1.384 (2) | C10—H10C | 0.9800 |
C2—H2A | 0.9500 | O1B—C7B | 1.52 (3) |
C3—C4 | 1.387 (2) | C7B—C8B | 1.52 (2) |
C3—H3A | 0.9500 | C7B—H7BA | 0.9900 |
C4—C5 | 1.3906 (18) | C7B—H7BB | 0.9900 |
C4—H4A | 0.9500 | C8B—C9B | 1.523 (5) |
C5—N1 | 1.3454 (18) | C8B—H8BA | 0.9900 |
C5—H5A | 0.9500 | C8B—H8BB | 0.9900 |
C6—O1 | 1.332 (8) | C9B—C10B | 1.55 (2) |
C6—O1B | 1.349 (11) | C9B—H9BA | 0.9900 |
C6—S2 | 1.6925 (13) | C9B—H9BB | 0.9900 |
C6—S1 | 1.7014 (13) | C10B—H10D | 0.9800 |
O1—C7 | 1.41 (2) | C10B—H10E | 0.9800 |
C7—C8 | 1.524 (16) | C10B—H10F | 0.9800 |
C7—H7A | 0.9900 | Mn1—N1i | 2.2558 (11) |
C7—H7B | 0.9900 | Mn1—N1 | 2.2558 (11) |
C8—C9 | 1.523 (3) | Mn1—S1 | 2.5863 (4) |
C8—H8A | 0.9900 | Mn1—S1i | 2.5863 (4) |
C8—H8B | 0.9900 | Mn1—S2 | 2.6554 (5) |
C9—C10 | 1.513 (16) | Mn1—S2i | 2.6554 (5) |
C9—H9A | 0.9900 | ||
N1—C1—C2 | 122.57 (13) | O1B—C7B—H7BA | 111.1 |
N1—C1—H1A | 118.7 | C8B—C7B—H7BB | 111.1 |
C2—C1—H1A | 118.7 | O1B—C7B—H7BB | 111.1 |
C3—C2—C1 | 118.86 (13) | H7BA—C7B—H7BB | 109.1 |
C3—C2—H2A | 120.6 | C7B—C8B—C9B | 114.6 (9) |
C1—C2—H2A | 120.6 | C7B—C8B—H8BA | 108.6 |
C2—C3—C4 | 118.85 (12) | C9B—C8B—H8BA | 108.6 |
C2—C3—H3A | 120.6 | C7B—C8B—H8BB | 108.6 |
C4—C3—H3A | 120.6 | C9B—C8B—H8BB | 108.6 |
C3—C4—C5 | 119.09 (14) | H8BA—C8B—H8BB | 107.6 |
C3—C4—H4A | 120.5 | C8B—C9B—C10B | 113.5 (9) |
C5—C4—H4A | 120.5 | C8B—C9B—H9BA | 108.9 |
N1—C5—C4 | 122.39 (13) | C10B—C9B—H9BA | 108.9 |
N1—C5—H5A | 118.8 | C8B—C9B—H9BB | 108.9 |
C4—C5—H5A | 118.8 | C10B—C9B—H9BB | 108.9 |
O1—C6—S2 | 118.6 (4) | H9BA—C9B—H9BB | 107.7 |
O1B—C6—S2 | 128.8 (6) | C9B—C10B—H10D | 109.5 |
O1—C6—S1 | 118.1 (4) | C9B—C10B—H10E | 109.5 |
O1B—C6—S1 | 107.9 (6) | H10D—C10B—H10E | 109.5 |
S2—C6—S1 | 123.34 (7) | C9B—C10B—H10F | 109.5 |
C6—O1—C7 | 127.1 (9) | H10D—C10B—H10F | 109.5 |
O1—C7—C8 | 110.3 (11) | H10E—C10B—H10F | 109.5 |
O1—C7—H7A | 109.6 | N1i—Mn1—N1 | 180.0 |
C8—C7—H7A | 109.6 | N1i—Mn1—S1 | 89.15 (3) |
O1—C7—H7B | 109.6 | N1—Mn1—S1 | 90.85 (3) |
C8—C7—H7B | 109.6 | N1i—Mn1—S1i | 90.86 (3) |
H7A—C7—H7B | 108.1 | N1—Mn1—S1i | 89.15 (3) |
C9—C8—C7 | 112.9 (7) | S1—Mn1—S1i | 180.0 |
C9—C8—H8A | 109.0 | N1i—Mn1—S2 | 89.85 (3) |
C7—C8—H8A | 109.0 | N1—Mn1—S2 | 90.15 (3) |
C9—C8—H8B | 109.0 | S1—Mn1—S2 | 69.478 (12) |
C7—C8—H8B | 109.0 | S1i—Mn1—S2 | 110.523 (12) |
H8A—C8—H8B | 107.8 | N1i—Mn1—S2i | 90.16 (3) |
C10—C9—C8 | 111.8 (5) | N1—Mn1—S2i | 89.84 (3) |
C10—C9—H9A | 109.3 | S1—Mn1—S2i | 110.521 (12) |
C8—C9—H9A | 109.3 | S1i—Mn1—S2i | 69.477 (12) |
C10—C9—H9B | 109.3 | S2—Mn1—S2i | 180.0 |
C8—C9—H9B | 109.3 | C1—N1—C5 | 118.23 (11) |
H9A—C9—H9B | 107.9 | C1—N1—Mn1 | 120.78 (9) |
C6—O1B—C7B | 112.4 (12) | C5—N1—Mn1 | 120.81 (8) |
C8B—C7B—O1B | 103.3 (16) | C6—S1—Mn1 | 84.58 (4) |
C8B—C7B—H7BA | 111.1 | C6—S2—Mn1 | 82.56 (4) |
N1—C1—C2—C3 | 0.2 (2) | S1i—Mn1—N1—C1 | −121.11 (9) |
C1—C2—C3—C4 | 0.7 (2) | S2—Mn1—N1—C1 | 128.36 (9) |
C2—C3—C4—C5 | −0.8 (2) | S2i—Mn1—N1—C1 | −51.64 (9) |
C3—C4—C5—N1 | 0.0 (2) | S1—Mn1—N1—C5 | −126.13 (9) |
O1B—C6—O1—C7 | −171 (12) | S1i—Mn1—N1—C5 | 53.87 (9) |
S2—C6—O1—C7 | 3 (2) | S2—Mn1—N1—C5 | −56.65 (9) |
S1—C6—O1—C7 | −177.8 (13) | S2i—Mn1—N1—C5 | 123.35 (9) |
C6—O1—C7—C8 | 159.6 (13) | O1—C6—S1—Mn1 | 178.4 (9) |
O1—C7—C8—C9 | 59.6 (13) | O1B—C6—S1—Mn1 | 177.2 (12) |
C7—C8—C9—C10 | −175.5 (10) | S2—C6—S1—Mn1 | −1.95 (7) |
O1—C6—O1B—C7B | 7 (9) | N1i—Mn1—S1—C6 | −89.05 (5) |
S2—C6—O1B—C7B | 0 (3) | N1—Mn1—S1—C6 | 90.95 (5) |
S1—C6—O1B—C7B | −178.7 (15) | S2—Mn1—S1—C6 | 1.11 (4) |
C6—O1B—C7B—C8B | −163.2 (16) | S2i—Mn1—S1—C6 | −178.89 (4) |
O1B—C7B—C8B—C9B | −54.0 (18) | O1—C6—S2—Mn1 | −178.5 (9) |
C7B—C8B—C9B—C10B | −178.7 (15) | O1B—C6—S2—Mn1 | −177.1 (14) |
C2—C1—N1—C5 | −0.99 (19) | S1—C6—S2—Mn1 | 1.91 (7) |
C2—C1—N1—Mn1 | 174.12 (10) | N1i—Mn1—S2—C6 | 88.03 (5) |
C4—C5—N1—C1 | 0.90 (19) | N1—Mn1—S2—C6 | −91.97 (5) |
C4—C5—N1—Mn1 | −174.21 (10) | S1—Mn1—S2—C6 | −1.12 (4) |
S1—Mn1—N1—C1 | 58.88 (9) | S1i—Mn1—S2—C6 | 178.88 (4) |
Symmetry code: (i) −x+1, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [Mn(C5H9OS2)2(C5H5N)2] |
Mr | 511.66 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 10.9189 (17), 6.0853 (9), 17.650 (3) |
β (°) | 97.536 (3) |
V (Å3) | 1162.6 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.95 |
Crystal size (mm) | 0.50 × 0.37 × 0.26 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2003) |
Tmin, Tmax | 0.630, 0.782 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11354, 2871, 2797 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.666 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.025, 0.064, 1.12 |
No. of reflections | 2871 |
No. of parameters | 151 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.50 |
Computer programs: SMART (Bruker, 2002), SAINT-Plus (Bruker, 2002), SHELXTL (Sheldrick, 2008), publCIF (Westrip, 2010).
Acknowledgements
We are thankful to HIR project No. UM·C/625/1/HIR/035 and UMRG project No. RG097-10AET for funding. The X-ray diffractometer was funded by NSF grant 0087210, Ohio Board of Regents grant CAP-491 and Youngstown State University.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
As a part of our ongoing studies on the development of single source precursors for the fabrication of pure manganese sulfide thin films through aerosol-assisted chemical vapour deposition (AACVD) (Alam et al., 2008; Tahir et al., 2010) the monomeric title complex [Mn(S2CO-n-Bu)2.(C5H5N)2] was synthesized and its crystal structure, one of just four manganese dithiocarbonates (Klevtsova & Glinskaya, 1997; Câmpian et al., 2010; Kirichenko et al., 1994), is reported here.
The structure of the manganese compound consists of centrosymmetric monomeric entities. Fig. 1 shows a perspective view of the monomeric unit with the atomic numbering scheme. The Mn(II) atom is in a distorted octahedral environment surrounded by two chelating xanthate ligands and two pyridines ligands. All managanese dithiocarbonato compounds structurally described so far are also octahedral complexes with an N2S4 donor set (Klevtsova & Glinskaya, 1997; Câmpian et al., 2010; Kirichenko et al., 1994), but the other four such compounds are all bipyridine derivative complexes and the title compound is the only one in which the two none-sulfur donor atoms occupy the apical sites. The four sulfur atoms and the manganese atom are almost coplanar. The bond angles around the manganese atom are in the range of 69.48 (1)° to 180°. The Mn—S bond lengths involving the xanthate ligands range are 2.5862 (4) and 2.6556 (5)Å and are in good agreement with those reported for other analogous Mn-dithiocarbonato complexes. The variation of the Mn—S bond distances in the complex of ca 0.07Å is not very pronounced and the bidentate κ2-S2CO-n-Bu ligands may thus be considered to be chelating in a symmetric (isobidentate) mode. The resulting N2S4 donor set defines an approximately octahedral geometry with distortions arising from the steric constraints imposed by the restricted bite distances of the chelating xanthate ligands. The two S atoms forming the longer Mn—S bonds are approximately trans to each other. The short value of 1.333 (8)Å for the C6—O1 bond lengths is consistent with a significant contribution of the resonance form of the xanthate anion that features a formal C═O bond and negative charges on each of the S atoms. The two pyridine rings are coplanar and almost perfectly perpendicular to the O1/S1/S2/O1i/S1i/S2i plane. Symmetry code: (i) -x+1, -y+1, -z+2.
Packing of the title compound is facilitated mostly by shape recognition through van der Waals forces. A small number of C—H···O interactions (originating from the alkyl and aromatic C—H groups) can be observed (Fig. 2), and close contacts are present between sulfur atoms of neighboring complexes. These close contacts weakly connect the MnS4 units of the complexes along the direction of the b-axis to form infinite (MnS4)n chains as shown in Fig. 2.