metal-organic compounds
Bis(ethanol-κO)bis(pyridine-3-carbaldehyde-κN thiosemicarbazone)bis(thiocyanato-κN)iron(II)–pyridine-3-carbaldehyde thiosemicarbazone (1/2)
aCollege of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000, People's Republic of China
*Correspondence e-mail: wang_shaomei@yahoo.cn
The II complex, [Fe(NCS)2(C7H8N4S)2(CH3CH2OH)2]·2C7H8N4S, based on the Schiff base ligand pyridine-3-carbaldehyde thiosemicarbazone (pct), results from the cocrystallization of an FeII coordination compound together with two of the pct ligands. The complex unit is mononuclear, with the central FeII ion located on a crystallographic centre of inversion and coordinated by four N atoms from two pct ligands and two thiocyanate anions. The slightly distorted octahedral coordination is completed by two O atoms from ethanol molecules. The crystal packing is accomplished intermolecular N—H⋯S hydrogen bonds.
of the title FeRelated literature
For the structures of metal complexes of Schiff base ligands synthesized by condensation of pyridine-3-carbaldehyde and amino compounds, see: Brook et al. (2000); Deng et al. (2007); Garbelini et al. (2008); Kowol et al. (2007); Zhong et al. (2007). For the corresponding Mn(II) complex of pyridine-3-carbaldehyde thiosemicarbazone, see: Li et al. (2006).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809024076/im2122sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809024076/im2122Isup2.hkl
A mixture of 0.5 mmol FeCl2 × 6 H2O, 1.0 mmol of (NH4)SCN and 10 ml water-ethanol (1:2 v/v) was stirred for ca. 2 hrs at 343 K. Then 1.0 mmol pct in 10 ml water-ethanol mixture (1:2 v/v) was added. The mixture was further stirred for another 2 h, then filtered. The resultant filtrate was left to stand for slow evaporation at room temperature. Dark green single crystals of (I) suitable for X-ray structure analysis were obtained after a period of one week (yield 63%).
Hydrogen atoms attached to carbon atoms and nitrogen atoms were positioned geometrically and treated as riding, with C—H = 0.93 Å, N—H = 0.86 Å, and Uiso(H) = 1.2Ueq(C or N). The H atom attached to the hydroxy group of the ethanol ligand was located from difference density maps and was refined with distance restraints of O–H = 0.82 (1) Å.
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The structure of (I) × pct, symmetry code: (i) -x + 2, -y, -z + 1. | |
Fig. 2. Three-dimensional supramolecular network constructed by hydrogen bonding interactions (dashed lines). |
[Fe(NCS)2(C7H8N4S)2(C2H6O)2]·2C7H8N4S | Z = 1 |
Mr = 985.08 | F(000) = 512 |
Triclinic, P1 | Dx = 1.411 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.916 (4) Å | Cell parameters from 3773 reflections |
b = 9.556 (5) Å | θ = 2.3–26.9° |
c = 14.538 (7) Å | µ = 0.65 mm−1 |
α = 87.341 (8)° | T = 173 K |
β = 88.191 (8)° | Block, dark green |
γ = 69.604 (8)° | 0.32 × 0.26 × 0.22 mm |
V = 1160 (1) Å3 |
Bruker SMART CCD area-detector diffractometer | 4037 independent reflections |
Radiation source: fine-focus sealed tube | 2953 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
ϕ and ω scans | θmax = 25.0°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→10 |
Tmin = 0.819, Tmax = 0.871 | k = −11→11 |
8300 measured reflections | l = −17→17 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.134 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.082P)2 + 0.3403P] where P = (Fo2 + 2Fc2)/3 |
4037 reflections | (Δ/σ)max = 0.001 |
282 parameters | Δρmax = 0.43 e Å−3 |
1 restraint | Δρmin = −0.24 e Å−3 |
[Fe(NCS)2(C7H8N4S)2(C2H6O)2]·2C7H8N4S | γ = 69.604 (8)° |
Mr = 985.08 | V = 1160 (1) Å3 |
Triclinic, P1 | Z = 1 |
a = 8.916 (4) Å | Mo Kα radiation |
b = 9.556 (5) Å | µ = 0.65 mm−1 |
c = 14.538 (7) Å | T = 173 K |
α = 87.341 (8)° | 0.32 × 0.26 × 0.22 mm |
β = 88.191 (8)° |
Bruker SMART CCD area-detector diffractometer | 4037 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2953 reflections with I > 2σ(I) |
Tmin = 0.819, Tmax = 0.871 | Rint = 0.022 |
8300 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 1 restraint |
wR(F2) = 0.134 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.43 e Å−3 |
4037 reflections | Δρmin = −0.24 e Å−3 |
282 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 | ||
Fe1 | 0.5000 | 0.0000 | 0.0000 | 0.0416 (2) | |
N1 | 0.2848 (3) | 0.1196 (3) | 0.09806 (16) | 0.0410 (6) | |
N2 | 0.1975 (3) | −0.0995 (3) | 0.33648 (15) | 0.0389 (6) | |
N3 | 0.1640 (3) | −0.1698 (3) | 0.41443 (16) | 0.0413 (6) | |
H3 | 0.0676 | −0.1382 | 0.4397 | 0.050* | |
N4 | 0.4186 (3) | −0.3344 (3) | 0.40767 (19) | 0.0659 (9) | |
H4A | 0.4316 | −0.2885 | 0.3557 | 0.079* | |
H4B | 0.4981 | −0.4112 | 0.4298 | 0.079* | |
N5 | 0.5606 (3) | −0.2022 (3) | 0.08302 (19) | 0.0536 (7) | |
C12 | 0.7900 (4) | 0.3134 (4) | 0.8792 (2) | 0.0604 (9) | |
H12 | 0.6944 | 0.3331 | 0.9150 | 0.072* | |
N7 | 0.8316 (3) | 0.5754 (3) | 0.64455 (16) | 0.0424 (6) | |
N8 | 0.8582 (3) | 0.6617 (3) | 0.57213 (17) | 0.0453 (6) | |
H8 | 0.9546 | 0.6403 | 0.5474 | 0.054* | |
N9 | 0.5924 (3) | 0.7961 (3) | 0.5738 (2) | 0.0652 (8) | |
H9A | 0.5814 | 0.7316 | 0.6163 | 0.078* | |
H9B | 0.5080 | 0.8711 | 0.5547 | 0.078* | |
O1 | 0.6741 (3) | 0.0634 (3) | 0.07601 (15) | 0.0541 (6) | |
S1 | 0.24701 (9) | −0.36692 (9) | 0.55347 (5) | 0.0500 (2) | |
S2 | 0.64184 (10) | −0.43494 (10) | 0.21504 (7) | 0.0632 (3) | |
S3 | 0.76674 (9) | 0.89666 (9) | 0.45668 (6) | 0.0525 (3) | |
C1 | 0.1770 (4) | 0.2554 (3) | 0.0754 (2) | 0.0457 (7) | |
H1 | 0.1962 | 0.3076 | 0.0218 | 0.055* | |
C2 | 0.0403 (4) | 0.3210 (3) | 0.1271 (2) | 0.0471 (7) | |
H2 | −0.0332 | 0.4165 | 0.1092 | 0.057* | |
C3 | 0.0117 (3) | 0.2462 (3) | 0.20499 (19) | 0.0416 (7) | |
H3A | −0.0815 | 0.2902 | 0.2418 | 0.050* | |
C4 | 0.1196 (3) | 0.1064 (3) | 0.22943 (18) | 0.0354 (6) | |
C5 | 0.2540 (3) | 0.0486 (3) | 0.17329 (19) | 0.0405 (7) | |
H5 | 0.3286 | −0.0473 | 0.1895 | 0.049* | |
C6 | 0.0921 (3) | 0.0255 (3) | 0.3116 (2) | 0.0409 (7) | |
H6 | −0.0039 | 0.0653 | 0.3468 | 0.049* | |
C7 | 0.2808 (3) | −0.2882 (3) | 0.4521 (2) | 0.0424 (7) | |
C8 | 0.5957 (3) | −0.2995 (3) | 0.1376 (2) | 0.0409 (7) | |
C9 | 0.6438 (4) | 0.1960 (4) | 0.1234 (2) | 0.0602 (9) | |
H9C | 0.5507 | 0.2751 | 0.0956 | 0.072* | |
H9D | 0.7375 | 0.2286 | 0.1155 | 0.072* | |
C10 | 0.6107 (5) | 0.1792 (5) | 0.2242 (3) | 0.0809 (13) | |
H10A | 0.5138 | 0.1535 | 0.2327 | 0.121* | |
H10B | 0.5952 | 0.2735 | 0.2538 | 0.121* | |
H10C | 0.7015 | 0.0997 | 0.2521 | 0.121* | |
C11 | 0.9244 (4) | 0.1953 (4) | 0.9025 (2) | 0.0577 (9) | |
H11 | 0.9201 | 0.1350 | 0.9557 | 0.069* | |
N6 | 1.0609 (3) | 0.1611 (3) | 0.85410 (18) | 0.0512 (7) | |
C13 | 1.0645 (4) | 0.2479 (3) | 0.7803 (2) | 0.0457 (7) | |
H13 | 1.1613 | 0.2244 | 0.7453 | 0.055* | |
C14 | 0.9344 (3) | 0.3714 (3) | 0.7514 (2) | 0.0404 (7) | |
C15 | 0.7945 (4) | 0.4035 (4) | 0.8032 (2) | 0.0533 (8) | |
H15 | 0.7026 | 0.4867 | 0.7865 | 0.064* | |
C16 | 0.9506 (3) | 0.4637 (3) | 0.6721 (2) | 0.0419 (7) | |
H16 | 1.0508 | 0.4406 | 0.6406 | 0.050* | |
C17 | 0.7345 (3) | 0.7807 (3) | 0.53873 (19) | 0.0417 (7) | |
H17 | 0.747 (3) | −0.006 (3) | 0.099 (2) | 0.067 (12)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Fe1 | 0.0384 (3) | 0.0424 (4) | 0.0381 (4) | −0.0086 (3) | 0.0034 (2) | 0.0106 (3) |
N1 | 0.0387 (13) | 0.0410 (14) | 0.0383 (13) | −0.0092 (11) | 0.0062 (10) | 0.0063 (11) |
N2 | 0.0372 (13) | 0.0431 (14) | 0.0345 (13) | −0.0130 (11) | 0.0060 (10) | 0.0047 (11) |
N3 | 0.0344 (13) | 0.0445 (14) | 0.0391 (13) | −0.0085 (11) | 0.0080 (10) | 0.0102 (11) |
N4 | 0.0418 (15) | 0.073 (2) | 0.0584 (18) | 0.0057 (14) | 0.0150 (13) | 0.0275 (15) |
N5 | 0.0464 (16) | 0.0499 (16) | 0.0545 (16) | −0.0076 (12) | 0.0044 (12) | 0.0220 (14) |
C12 | 0.0473 (19) | 0.075 (2) | 0.058 (2) | −0.0233 (18) | 0.0052 (16) | 0.0173 (18) |
N7 | 0.0404 (14) | 0.0469 (15) | 0.0407 (14) | −0.0173 (12) | −0.0005 (11) | 0.0076 (11) |
N8 | 0.0379 (13) | 0.0464 (15) | 0.0485 (15) | −0.0129 (11) | 0.0044 (11) | 0.0104 (12) |
N9 | 0.0362 (15) | 0.071 (2) | 0.0734 (19) | −0.0046 (13) | 0.0092 (13) | 0.0306 (16) |
O1 | 0.0492 (14) | 0.0503 (14) | 0.0551 (14) | −0.0065 (11) | −0.0113 (11) | −0.0028 (11) |
S1 | 0.0399 (4) | 0.0577 (5) | 0.0429 (5) | −0.0078 (4) | 0.0058 (3) | 0.0164 (4) |
S2 | 0.0511 (5) | 0.0507 (5) | 0.0736 (6) | −0.0045 (4) | 0.0042 (4) | 0.0327 (4) |
S3 | 0.0410 (4) | 0.0548 (5) | 0.0520 (5) | −0.0077 (4) | 0.0059 (4) | 0.0184 (4) |
C1 | 0.0456 (17) | 0.0447 (17) | 0.0418 (17) | −0.0112 (14) | 0.0055 (13) | 0.0094 (14) |
C2 | 0.0442 (17) | 0.0364 (16) | 0.0482 (18) | 0.0007 (13) | 0.0010 (14) | 0.0061 (14) |
C3 | 0.0349 (15) | 0.0430 (17) | 0.0404 (16) | −0.0061 (13) | 0.0061 (12) | −0.0018 (13) |
C4 | 0.0319 (14) | 0.0388 (15) | 0.0347 (15) | −0.0115 (12) | 0.0024 (11) | −0.0008 (12) |
C5 | 0.0370 (15) | 0.0333 (15) | 0.0431 (16) | −0.0036 (12) | 0.0037 (12) | 0.0090 (13) |
C6 | 0.0350 (15) | 0.0429 (17) | 0.0403 (16) | −0.0090 (13) | 0.0086 (12) | 0.0013 (13) |
C7 | 0.0378 (16) | 0.0458 (17) | 0.0401 (16) | −0.0114 (13) | 0.0033 (13) | 0.0044 (13) |
C8 | 0.0312 (14) | 0.0402 (17) | 0.0454 (17) | −0.0063 (12) | 0.0083 (12) | 0.0018 (14) |
C9 | 0.066 (2) | 0.062 (2) | 0.059 (2) | −0.0292 (19) | −0.0024 (17) | −0.0029 (18) |
C10 | 0.103 (3) | 0.092 (3) | 0.063 (3) | −0.054 (3) | 0.015 (2) | −0.007 (2) |
C11 | 0.060 (2) | 0.064 (2) | 0.053 (2) | −0.0279 (18) | −0.0082 (17) | 0.0184 (17) |
N6 | 0.0501 (16) | 0.0493 (16) | 0.0521 (16) | −0.0155 (13) | −0.0111 (13) | 0.0132 (13) |
C13 | 0.0415 (17) | 0.0480 (18) | 0.0475 (18) | −0.0159 (14) | −0.0004 (13) | 0.0023 (14) |
C14 | 0.0389 (16) | 0.0409 (17) | 0.0428 (16) | −0.0161 (13) | −0.0033 (13) | 0.0042 (13) |
C15 | 0.0388 (17) | 0.056 (2) | 0.060 (2) | −0.0117 (15) | −0.0008 (15) | 0.0154 (16) |
C16 | 0.0389 (16) | 0.0433 (17) | 0.0438 (17) | −0.0157 (14) | 0.0018 (13) | 0.0029 (13) |
C17 | 0.0406 (16) | 0.0466 (17) | 0.0365 (16) | −0.0139 (13) | 0.0010 (13) | 0.0025 (13) |
Fe1—N5i | 2.140 (3) | S1—C7 | 1.690 (3) |
Fe1—N5 | 2.140 (3) | S2—C8 | 1.623 (3) |
Fe1—O1i | 2.196 (2) | S3—C17 | 1.677 (3) |
Fe1—O1 | 2.196 (2) | C1—C2 | 1.377 (4) |
Fe1—N1 | 2.339 (2) | C1—H1 | 0.9500 |
Fe1—N1i | 2.339 (2) | C2—C3 | 1.375 (4) |
N1—C5 | 1.332 (3) | C2—H2 | 0.9500 |
N1—C1 | 1.352 (4) | C3—C4 | 1.385 (4) |
N2—C6 | 1.280 (4) | C3—H3A | 0.9500 |
N2—N3 | 1.368 (3) | C4—C5 | 1.388 (4) |
N3—C7 | 1.350 (4) | C4—C6 | 1.453 (4) |
N3—H3 | 0.8800 | C5—H5 | 0.9500 |
N4—C7 | 1.312 (4) | C6—H6 | 0.9500 |
N4—H4A | 0.8800 | C9—C10 | 1.498 (5) |
N4—H4B | 0.8800 | C9—H9C | 0.9900 |
N5—C8 | 1.156 (4) | C9—H9D | 0.9900 |
C12—C11 | 1.368 (5) | C10—H10A | 0.9800 |
C12—C15 | 1.377 (4) | C10—H10B | 0.9800 |
C12—H12 | 0.9500 | C10—H10C | 0.9800 |
N7—C16 | 1.274 (4) | C11—N6 | 1.332 (4) |
N7—N8 | 1.373 (3) | C11—H11 | 0.9500 |
N8—C17 | 1.361 (4) | N6—C13 | 1.332 (4) |
N8—H8 | 0.8800 | C13—C14 | 1.395 (4) |
N9—C17 | 1.312 (4) | C13—H13 | 0.9500 |
N9—H9A | 0.8800 | C14—C15 | 1.383 (4) |
N9—H9B | 0.8800 | C14—C16 | 1.453 (4) |
O1—C9 | 1.408 (4) | C15—H15 | 0.9500 |
O1—H17 | 0.816 (10) | C16—H16 | 0.9500 |
N5i—Fe1—N5 | 180.00 (14) | C2—C3—H3A | 120.2 |
N5i—Fe1—O1i | 88.99 (10) | C4—C3—H3A | 120.2 |
N5—Fe1—O1i | 91.01 (10) | C3—C4—C5 | 117.5 (2) |
N5i—Fe1—O1 | 91.01 (10) | C3—C4—C6 | 120.6 (2) |
N5—Fe1—O1 | 88.99 (10) | C5—C4—C6 | 121.9 (3) |
O1i—Fe1—O1 | 180.00 (14) | N1—C5—C4 | 123.9 (3) |
N5i—Fe1—N1 | 88.53 (9) | N1—C5—H5 | 118.0 |
N5—Fe1—N1 | 91.47 (9) | C4—C5—H5 | 118.0 |
O1i—Fe1—N1 | 85.58 (9) | N2—C6—C4 | 119.9 (2) |
O1—Fe1—N1 | 94.42 (9) | N2—C6—H6 | 120.0 |
N5i—Fe1—N1i | 91.47 (9) | C4—C6—H6 | 120.0 |
N5—Fe1—N1i | 88.53 (9) | N4—C7—N3 | 116.9 (3) |
O1i—Fe1—N1i | 94.42 (9) | N4—C7—S1 | 123.1 (2) |
O1—Fe1—N1i | 85.58 (9) | N3—C7—S1 | 119.9 (2) |
N1—Fe1—N1i | 180.00 (12) | N5—C8—S2 | 179.0 (3) |
C5—N1—C1 | 117.4 (2) | O1—C9—C10 | 113.3 (3) |
C5—N1—Fe1 | 120.69 (18) | O1—C9—H9C | 108.9 |
C1—N1—Fe1 | 121.52 (18) | C10—C9—H9C | 108.9 |
C6—N2—N3 | 116.9 (2) | O1—C9—H9D | 108.9 |
C7—N3—N2 | 119.2 (2) | C10—C9—H9D | 108.9 |
C7—N3—H3 | 120.4 | H9C—C9—H9D | 107.7 |
N2—N3—H3 | 120.4 | C9—C10—H10A | 109.5 |
C7—N4—H4A | 120.0 | C9—C10—H10B | 109.5 |
C7—N4—H4B | 120.0 | H10A—C10—H10B | 109.5 |
H4A—N4—H4B | 120.0 | C9—C10—H10C | 109.5 |
C8—N5—Fe1 | 170.5 (3) | H10A—C10—H10C | 109.5 |
C11—C12—C15 | 119.4 (3) | H10B—C10—H10C | 109.5 |
C11—C12—H12 | 120.3 | N6—C11—C12 | 122.9 (3) |
C15—C12—H12 | 120.3 | N6—C11—H11 | 118.5 |
C16—N7—N8 | 117.2 (2) | C12—C11—H11 | 118.5 |
C17—N8—N7 | 119.6 (2) | C11—N6—C13 | 117.4 (3) |
C17—N8—H8 | 120.2 | N6—C13—C14 | 123.9 (3) |
N7—N8—H8 | 120.2 | N6—C13—H13 | 118.1 |
C17—N9—H9A | 120.0 | C14—C13—H13 | 118.1 |
C17—N9—H9B | 120.0 | C15—C14—C13 | 117.1 (3) |
H9A—N9—H9B | 120.0 | C15—C14—C16 | 122.6 (3) |
C9—O1—Fe1 | 126.7 (2) | C13—C14—C16 | 120.3 (3) |
C9—O1—H17 | 112 (3) | C12—C15—C14 | 119.2 (3) |
Fe1—O1—H17 | 115 (3) | C12—C15—H15 | 120.4 |
N1—C1—C2 | 122.6 (3) | C14—C15—H15 | 120.4 |
N1—C1—H1 | 118.7 | N7—C16—C14 | 120.5 (3) |
C2—C1—H1 | 118.7 | N7—C16—H16 | 119.7 |
C3—C2—C1 | 119.1 (3) | C14—C16—H16 | 119.7 |
C3—C2—H2 | 120.5 | N9—C17—N8 | 116.1 (3) |
C1—C2—H2 | 120.5 | N9—C17—S3 | 123.4 (2) |
C2—C3—C4 | 119.6 (3) | N8—C17—S3 | 120.5 (2) |
Symmetry code: (i) −x+1, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N9—H9B···S3ii | 0.88 | 2.67 | 3.533 (3) | 165 |
N4—H4B···S1iii | 0.88 | 2.52 | 3.373 (3) | 164 |
N4—H4A···S2 | 0.88 | 2.80 | 3.360 (3) | 123 |
N3—H3···S3iv | 0.88 | 2.59 | 3.414 (3) | 156 |
Symmetry codes: (ii) −x+1, −y+2, −z+1; (iii) −x+1, −y−1, −z+1; (iv) x−1, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | [Fe(NCS)2(C7H8N4S)2(C2H6O)2]·2C7H8N4S |
Mr | 985.08 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 8.916 (4), 9.556 (5), 14.538 (7) |
α, β, γ (°) | 87.341 (8), 88.191 (8), 69.604 (8) |
V (Å3) | 1160 (1) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.65 |
Crystal size (mm) | 0.32 × 0.26 × 0.22 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.819, 0.871 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8300, 4037, 2953 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.134, 1.01 |
No. of reflections | 4037 |
No. of parameters | 282 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.43, −0.24 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N9—H9B···S3i | 0.88 | 2.67 | 3.533 (3) | 165.2 |
N4—H4B···S1ii | 0.88 | 2.52 | 3.373 (3) | 163.8 |
N4—H4A···S2 | 0.88 | 2.80 | 3.360 (3) | 122.7 |
N3—H3···S3iii | 0.88 | 2.59 | 3.414 (3) | 156.3 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y−1, −z+1; (iii) x−1, y−1, z. |
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.
Several crystal structures of metal complexes based on Schiff base ligands being synthesized by condensation of pyridine-3-carbaldehyde and amino compounds have been previously reported (Brook et al., 2000; Deng et al., 2007; Garbelini et al., 2008; Kowol et al., 2007; Zhong et al., 2007). However, with regard to pyridine-3-carbaldehyde thiosemicarbazone (pct), only the corresponding Mn(II) complex has been documented (Li et al., 2006). Herein, we report the synthesis and crystal crystal structure of its FeII complex.
The structure of the title compound, (I), consists of discrete [Fe(C7H8N4S)2(SCN)2(C2H5OH)2] neutral units and uncoordinated pct molecules. The two semicarbazone ligands are planar, and each binds to FeII via the pyridine N atom. Therefore, pct acts as a monodentate ligand with the sulphur and nitrogen atoms of the semicarbazone subunit remaining uncoordinated. In addition to pct, the central FeII is coordinated by two SCN- anions and two C2H5OH molecules via the N and O atoms, respectively. (Fig. 1)
The molecules are held together by intermolecular hydrogen bonding interactions. The imino nitrogen N3 acts as a hydrogen donor site towards S3 of the uncoordinated pct molecule forming intermolecular N3—H3···S3 hydrogen bonds. S3 also accepts a hydrogen bond from N9 of a neighboring uncoordinated pct to form N9—H9B···S3 hydrogen bonds. In addition, the SCN- also is involved in the construction of the hydrogen bond network by establishing an interaction between the terminal S atoms accept and the hydrogen atom at N4 to form N4—H4A···S2 and N4—H4B···S1 hydrogen bonds (Table 1, Fig. 2).