metal-organic compounds
Poly[tris(μ-4,4′-bipyridine-κ2N:N′)bis(dimethyl sulfoxide-κO)tetrakis(thiocyanato-κN)dicobalt(II)]
aMaterials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand, bDepartment of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin 32000, Thailand, and cDepartment of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
*Correspondence e-mail: sujittra@kku.ac.th
The 2(NCS)4(C10H8N2)3(C2H6OS)2]n, consists of one CoII atom, two thiocyanate anions, one dimethyl sulfoxide molecule and one and a half 4,4′-bipyridine molecules. The half-molecule is completed by inversion symmetry. The CoII atom is coordinated in a distorted octahedral geometry by two N atoms from two thiocyanate anions, one O atom from dimethyl sulfoxide as a terminal ligand and three N atoms from three 4,4′-bipyridine molecules as bridging ligands linking the cations, with a Co⋯Co separation of 11.5964 (5) Å. This generates a two-dimensional structure parallel to (-103). A C—H⋯S hydrogen bond links the layers into a three-dimensional supramolecular framework. The layers are stacked in an ABC fashion preventing the occurrence of interlayer void space and hence leading to the absence of lattice solvent and/or organic guest molecules in the structure.
of the title compound, [CoCCDC reference: 1007744
Related literature
For related coordination polymers with ligands such as pyrazine, pyrimidine, 4,4′-bipyridine and SCN−, see: Wriedt & Näther (2009, 2010); Wriedt et al. (2009); Yao & Wang (2009).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
CCDC reference: 1007744
https://doi.org/10.1107/S1600536814013555/is5365sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536814013555/is5365Isup2.hkl
Compound I was synthesized by direct method in a molar ratio of 1:3:1 of Co(NO3)2·6H2O, 4,4'-bpy and KSCN, respectively. To prepare the reaction mixture, Co(NO3)2·6H2O (0.5 mmol, 0.15 g) and KSCN (0.5 mmol, 0.05 g) were dissolved in water (10 mL). Then 10 ml of ethanoic solution of 4,4'-bpy (1.5 mmol, 0.23 g) was added. The mixture was stirred, then 10 mL of DMSO and 0.5 mL of 6 M HNO3 was slowly added to assist dissolution.The mixture was then heated at 60 °C for 15 mins. It was set at room temperature for a slow evaporation. After 15 days, pink crystals were obtained.
C-bound H atoms were positioned geometrically, with C—H = 0.93 (aromatic) or 0.96 Å (methyl), and included as riding atoms, with Uiso(H) = 1.5Ueq (C) for methyl groups and 1.2Ueq(C) otherwise.
Metal organic frameworks can be prepared in variety methods and there are many effects influencing their structures. The solvent used in preparing is one of the most important effects on the structures. The influence of the solvent on the structure has been widely studied, for example in the study of iron(II) thiocyanato coordination polymers based on 4,4'-bipyridine using methanol as a solvent (Wriedt & Näther, 2010). This finding suggested that if more solvent and higher concentration of N-donor ligand were applied the structure is likely to involve with solvent coordination and the different metal to organic ligand ratio. The solvent has the influence on both metal to organic ligand ratio and the arrangement of the organic linker leading to the variation of the dimension and topology of the network (Yao & Wang, 2009). In addition, the type of N-donor organic linkers also affect the structure (Wriedt & Näther, 2009; Wriedt et al., 2009).
Of interest to us was this effect. A new structure with the different metal to N-donor organic ligand ratio might also be possible by alteration of the solvent, type of N-donor organic ligand, and the metal to N-donor ligand ratio in the preparation. In this contribution, we present synthesis and structural characterization of a two-dimensional framework of poly[µ-tris(4,4'-bipyridine)di(dimethyl sulfoxide)tetrathiocyanato-N-dicobalt(II)] (I)
The 103). The metal atoms in one layer sit above or below the rectangular spaces. As a result, the terminal SCN- and DMSO ligands arrange approximately perpendicular to the layer plane and fill up the spaces between adjacent layers. This arrangement of the layers is in the ABC fashion preventing the occurrence of the interlayer spaces along the crystallographic c axis and hence leading to the absence of lattice solvent and/or organic guest molecules in the interlayer spaces (Fig. 3). In addition, the extended structure of I has been illustrated (Fig. 4). The hydrogen bonds between H1 and S1 link the layers with the distance of 2.82 Å (Table 2). As a result, these layers are assembled into a three-dimensional supramolecular framework.
of the title compound consists of one CoII centre, two SCN- anions, one and a half 4,4'-bpy molecules and one DMSO molecule (Fig. 1). The CoII is surrounded by two N atoms from terminal SCN- groups, one O atom from DMSO and three N atoms from three 4,4'-bpy (Table 1). The 4,4'-bpy acts as a bridge linking metal centres and generates a two-dimensional structure with rectangular spaces (11.60 x 23.25 Å) within layer (Fig. 2). Due to the arrangement of the linker and metal to N-donor organic ligand ratio of 1:1.5, the space within the layer is twice as compared to the related two-dimensional compound {[Fe(4,4'-bpy)2(SCN)2](MeOH)2}n (Wriedt & Näther, 2010). The layers are stacked in an ABC fashion (Fig. 3). The plane parallel to the layer is (For related coordination polymers with ligands such as pyrazine, pyrimidine, 4,4'-bipyridine and SCN-, see: Wriedt & Näther (2009, 2010); Wriedt et al. (2009); Yao & Wang (2009).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).[Co2(NCS)4(C10H8N2)3(C2H6OS)2] | Z = 2 |
Mr = 974.98 | F(000) = 1000 |
Monoclinic, P21/n | Dx = 1.514 Mg m−3 |
Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
a = 11.0772 (3) Å | µ = 1.12 mm−1 |
b = 16.9999 (2) Å | T = 273 K |
c = 11.6843 (3) Å | Block, pink |
β = 103.628 (1)° | 0.40 × 0.16 × 0.10 mm |
V = 2138.34 (8) Å3 |
Bruker SMART APEX CCD diffractometer | 5584 independent reflections |
Radiation source: fine-focus sealed tube | 3936 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
phi and ω scans | θmax = 29.8°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −14→14 |
Tmin = 0.591, Tmax = 0.894 | k = −16→22 |
14262 measured reflections | l = −12→15 |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.109 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0522P)2 + 1.1491P] where P = (Fo2 + 2Fc2)/3 |
5584 reflections | (Δ/σ)max < 0.001 |
264 parameters | Δρmax = 1.02 e Å−3 |
0 restraints | Δρmin = −0.58 e Å−3 |
[Co2(NCS)4(C10H8N2)3(C2H6OS)2] | V = 2138.34 (8) Å3 |
Mr = 974.98 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.0772 (3) Å | µ = 1.12 mm−1 |
b = 16.9999 (2) Å | T = 273 K |
c = 11.6843 (3) Å | 0.40 × 0.16 × 0.10 mm |
β = 103.628 (1)° |
Bruker SMART APEX CCD diffractometer | 5584 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 3936 reflections with I > 2σ(I) |
Tmin = 0.591, Tmax = 0.894 | Rint = 0.032 |
14262 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.109 | H-atom parameters constrained |
S = 1.01 | Δρmax = 1.02 e Å−3 |
5584 reflections | Δρmin = −0.58 e Å−3 |
264 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 | ||
Co1 | 0.61610 (3) | 0.238576 (18) | 0.34507 (3) | 0.02619 (10) | |
S3 | 0.74846 (7) | 0.21001 (5) | 0.14197 (7) | 0.04276 (18) | |
S2 | 0.57089 (8) | 0.31500 (5) | 0.72918 (8) | 0.0535 (2) | |
S1 | 0.93773 (9) | 0.42788 (7) | 0.32672 (16) | 0.1102 (6) | |
N3 | 0.47394 (17) | 0.14430 (11) | 0.30393 (18) | 0.0268 (4) | |
N2 | 0.47009 (19) | 0.33263 (12) | 0.30583 (19) | 0.0309 (5) | |
N1 | 0.76429 (18) | 0.14581 (12) | 0.39797 (18) | 0.0303 (4) | |
O1 | 0.62030 (17) | 0.22923 (12) | 0.16482 (17) | 0.0396 (4) | |
N7 | 0.6038 (2) | 0.25004 (14) | 0.5192 (2) | 0.0394 (5) | |
C15 | 0.4133 (2) | 0.12562 (14) | 0.1932 (2) | 0.0297 (5) | |
H15 | 0.4315 | 0.1541 | 0.1314 | 0.036* | |
N6 | 0.7569 (2) | 0.32360 (14) | 0.3613 (2) | 0.0435 (6) | |
C8 | 0.2944 (2) | 0.45622 (14) | 0.2665 (2) | 0.0299 (5) | |
C3 | 0.9512 (2) | 0.03082 (14) | 0.4782 (2) | 0.0279 (5) | |
C16 | 0.5904 (2) | 0.27781 (15) | 0.6063 (2) | 0.0324 (6) | |
C5 | 0.8725 (2) | 0.16319 (15) | 0.4734 (2) | 0.0366 (6) | |
H5 | 0.8856 | 0.2149 | 0.4992 | 0.044* | |
C9 | 0.2624 (2) | 0.38055 (16) | 0.2287 (3) | 0.0404 (7) | |
H9 | 0.1813 | 0.3692 | 0.1888 | 0.048* | |
C2 | 0.8399 (2) | 0.01292 (15) | 0.3977 (3) | 0.0398 (7) | |
H2 | 0.8257 | −0.0379 | 0.3681 | 0.048* | |
C11 | 0.4472 (2) | 0.10091 (15) | 0.3912 (2) | 0.0321 (5) | |
H11 | 0.4874 | 0.1128 | 0.4685 | 0.039* | |
C10 | 0.3514 (2) | 0.32131 (15) | 0.2502 (3) | 0.0395 (6) | |
H10 | 0.3268 | 0.2708 | 0.2242 | 0.047* | |
C4 | 0.9657 (2) | 0.10903 (15) | 0.5153 (2) | 0.0376 (6) | |
H4 | 1.0382 | 0.1248 | 0.5682 | 0.045* | |
C1 | 0.7503 (2) | 0.07089 (15) | 0.3616 (3) | 0.0373 (6) | |
H1 | 0.6765 | 0.0568 | 0.3092 | 0.045* | |
C6 | 0.5003 (3) | 0.40610 (16) | 0.3448 (3) | 0.0447 (7) | |
H6 | 0.5817 | 0.4157 | 0.3855 | 0.054* | |
C17 | 0.8323 (3) | 0.36663 (17) | 0.3468 (3) | 0.0437 (7) | |
C14 | 0.3251 (2) | 0.06625 (15) | 0.1664 (2) | 0.0319 (5) | |
H14 | 0.2842 | 0.0567 | 0.0886 | 0.038* | |
C7 | 0.4169 (3) | 0.46839 (16) | 0.3280 (3) | 0.0469 (8) | |
H7 | 0.4427 | 0.5180 | 0.3576 | 0.056* | |
C19 | 0.7763 (4) | 0.2828 (3) | 0.0436 (4) | 0.0746 (12) | |
H19A | 0.7051 | 0.2873 | −0.0214 | 0.112* | |
H19B | 0.8476 | 0.2684 | 0.0148 | 0.112* | |
H19C | 0.7914 | 0.3324 | 0.0838 | 0.112* | |
C18 | 0.7228 (5) | 0.1284 (3) | 0.0458 (5) | 0.0992 (17) | |
H18A | 0.6943 | 0.0846 | 0.0842 | 0.149* | |
H18B | 0.7989 | 0.1146 | 0.0250 | 0.149* | |
H18C | 0.6611 | 0.1416 | −0.0241 | 0.149* | |
C12 | 0.3626 (2) | 0.03931 (15) | 0.3716 (2) | 0.0344 (6) | |
H12 | 0.3487 | 0.0102 | 0.4347 | 0.041* | |
C13 | 0.2983 (2) | 0.02117 (14) | 0.2567 (2) | 0.0298 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co1 | 0.02248 (16) | 0.02112 (16) | 0.03429 (18) | 0.00099 (12) | 0.00529 (12) | 0.00138 (13) |
S3 | 0.0366 (4) | 0.0522 (4) | 0.0425 (4) | 0.0033 (3) | 0.0155 (3) | 0.0038 (3) |
S2 | 0.0528 (5) | 0.0601 (5) | 0.0505 (5) | −0.0048 (4) | 0.0179 (4) | −0.0164 (4) |
S1 | 0.0445 (5) | 0.0713 (7) | 0.1993 (16) | −0.0200 (5) | −0.0023 (7) | 0.0688 (9) |
N3 | 0.0229 (9) | 0.0205 (10) | 0.0362 (11) | 0.0000 (7) | 0.0053 (8) | 0.0014 (8) |
N2 | 0.0276 (10) | 0.0266 (11) | 0.0374 (12) | 0.0033 (8) | 0.0055 (9) | −0.0002 (9) |
N1 | 0.0289 (10) | 0.0263 (10) | 0.0344 (11) | 0.0059 (8) | 0.0049 (8) | 0.0017 (9) |
O1 | 0.0297 (9) | 0.0504 (12) | 0.0399 (10) | −0.0013 (8) | 0.0105 (8) | 0.0048 (9) |
N7 | 0.0391 (12) | 0.0393 (13) | 0.0380 (12) | 0.0040 (10) | 0.0054 (10) | 0.0015 (10) |
C15 | 0.0293 (12) | 0.0246 (12) | 0.0353 (13) | −0.0024 (9) | 0.0075 (10) | 0.0040 (10) |
N6 | 0.0340 (12) | 0.0319 (12) | 0.0631 (16) | −0.0024 (10) | 0.0083 (11) | −0.0004 (11) |
C8 | 0.0277 (12) | 0.0257 (12) | 0.0364 (13) | 0.0050 (9) | 0.0079 (10) | 0.0004 (10) |
C3 | 0.0249 (11) | 0.0260 (12) | 0.0325 (12) | 0.0051 (9) | 0.0061 (9) | 0.0009 (10) |
C16 | 0.0292 (12) | 0.0264 (13) | 0.0394 (14) | −0.0001 (9) | 0.0035 (10) | 0.0015 (10) |
C5 | 0.0342 (13) | 0.0252 (12) | 0.0450 (15) | 0.0050 (10) | −0.0017 (11) | −0.0053 (11) |
C9 | 0.0274 (13) | 0.0291 (13) | 0.0589 (18) | 0.0036 (10) | −0.0012 (12) | −0.0063 (12) |
C2 | 0.0325 (13) | 0.0233 (12) | 0.0560 (17) | 0.0040 (10) | −0.0048 (12) | −0.0074 (12) |
C11 | 0.0326 (13) | 0.0286 (13) | 0.0339 (13) | −0.0028 (10) | 0.0053 (10) | 0.0004 (10) |
C10 | 0.0334 (13) | 0.0227 (12) | 0.0579 (18) | 0.0029 (10) | 0.0018 (12) | −0.0071 (12) |
C4 | 0.0316 (13) | 0.0296 (14) | 0.0452 (15) | 0.0038 (10) | −0.0037 (11) | −0.0054 (11) |
C1 | 0.0263 (12) | 0.0303 (13) | 0.0491 (16) | 0.0044 (10) | −0.0032 (11) | −0.0042 (12) |
C6 | 0.0273 (13) | 0.0306 (14) | 0.069 (2) | 0.0041 (10) | −0.0027 (13) | −0.0075 (13) |
C17 | 0.0301 (13) | 0.0312 (14) | 0.0650 (19) | 0.0001 (11) | 0.0015 (13) | 0.0108 (13) |
C14 | 0.0309 (12) | 0.0299 (13) | 0.0326 (13) | −0.0054 (10) | 0.0029 (10) | 0.0001 (10) |
C7 | 0.0348 (14) | 0.0253 (13) | 0.073 (2) | 0.0028 (11) | −0.0029 (14) | −0.0119 (13) |
C19 | 0.063 (2) | 0.088 (3) | 0.086 (3) | 0.014 (2) | 0.044 (2) | 0.039 (2) |
C18 | 0.111 (4) | 0.095 (4) | 0.109 (4) | −0.019 (3) | 0.059 (3) | −0.054 (3) |
C12 | 0.0374 (14) | 0.0312 (13) | 0.0352 (14) | −0.0073 (11) | 0.0097 (11) | 0.0056 (11) |
C13 | 0.0259 (12) | 0.0223 (12) | 0.0411 (14) | −0.0025 (9) | 0.0076 (10) | 0.0002 (10) |
Co1—N7 | 2.080 (2) | C3—C3ii | 1.506 (4) |
Co1—N6 | 2.102 (2) | C5—C4 | 1.384 (3) |
Co1—O1 | 2.1234 (19) | C5—H5 | 0.9300 |
Co1—N3 | 2.2187 (19) | C9—C10 | 1.390 (4) |
Co1—N2 | 2.244 (2) | C9—H9 | 0.9300 |
Co1—N1 | 2.2551 (19) | C2—C1 | 1.392 (3) |
S3—O1 | 1.5401 (19) | C2—H2 | 0.9300 |
S3—C19 | 1.765 (4) | C11—C12 | 1.388 (3) |
S3—C18 | 1.766 (4) | C11—H11 | 0.9300 |
S2—C16 | 1.629 (3) | C10—H10 | 0.9300 |
S1—C17 | 1.623 (3) | C4—H4 | 0.9300 |
N3—C11 | 1.347 (3) | C1—H1 | 0.9300 |
N3—C15 | 1.348 (3) | C6—C7 | 1.388 (4) |
N2—C10 | 1.336 (3) | C6—H6 | 0.9300 |
N2—C6 | 1.344 (3) | C14—C13 | 1.391 (4) |
N1—C1 | 1.340 (3) | C14—H14 | 0.9300 |
N1—C5 | 1.343 (3) | C7—H7 | 0.9300 |
N7—C16 | 1.163 (4) | C19—H19A | 0.9600 |
C15—C14 | 1.388 (3) | C19—H19B | 0.9600 |
C15—H15 | 0.9300 | C19—H19C | 0.9600 |
N6—C17 | 1.152 (4) | C18—H18A | 0.9600 |
C8—C9 | 1.379 (4) | C18—H18B | 0.9600 |
C8—C7 | 1.393 (4) | C18—H18C | 0.9600 |
C8—C13i | 1.489 (3) | C12—C13 | 1.398 (4) |
C3—C4 | 1.396 (3) | C12—H12 | 0.9300 |
C3—C2 | 1.396 (3) | C13—C8iii | 1.489 (3) |
N7—Co1—N6 | 93.76 (10) | C10—C9—H9 | 120.0 |
N7—Co1—O1 | 177.34 (8) | C1—C2—C3 | 120.2 (2) |
N6—Co1—O1 | 87.22 (9) | C1—C2—H2 | 119.9 |
N7—Co1—N3 | 94.19 (9) | C3—C2—H2 | 119.9 |
N6—Co1—N3 | 171.85 (9) | N3—C11—C12 | 123.3 (2) |
O1—Co1—N3 | 84.91 (7) | N3—C11—H11 | 118.4 |
N7—Co1—N2 | 85.58 (8) | C12—C11—H11 | 118.4 |
N6—Co1—N2 | 90.69 (8) | N2—C10—C9 | 123.9 (2) |
O1—Co1—N2 | 91.94 (8) | N2—C10—H10 | 118.0 |
N3—Co1—N2 | 91.71 (7) | C9—C10—H10 | 118.0 |
N7—Co1—N1 | 90.49 (8) | C5—C4—C3 | 120.1 (2) |
N6—Co1—N1 | 88.83 (8) | C5—C4—H4 | 119.9 |
O1—Co1—N1 | 92.00 (8) | C3—C4—H4 | 119.9 |
N3—Co1—N1 | 89.30 (7) | N1—C1—C2 | 123.8 (2) |
N2—Co1—N1 | 176.00 (8) | N1—C1—H1 | 118.1 |
O1—S3—C19 | 105.89 (15) | C2—C1—H1 | 118.1 |
O1—S3—C18 | 105.07 (18) | N2—C6—C7 | 123.8 (2) |
C19—S3—C18 | 99.4 (3) | N2—C6—H6 | 118.1 |
C11—N3—C15 | 116.7 (2) | C7—C6—H6 | 118.1 |
C11—N3—Co1 | 120.20 (16) | N6—C17—S1 | 179.5 (3) |
C15—N3—Co1 | 123.09 (16) | C15—C14—C13 | 119.6 (2) |
C10—N2—C6 | 115.9 (2) | C15—C14—H14 | 120.2 |
C10—N2—Co1 | 125.18 (17) | C13—C14—H14 | 120.2 |
C6—N2—Co1 | 118.89 (17) | C6—C7—C8 | 119.6 (2) |
C1—N1—C5 | 115.8 (2) | C6—C7—H7 | 120.2 |
C1—N1—Co1 | 123.75 (16) | C8—C7—H7 | 120.2 |
C5—N1—Co1 | 120.37 (16) | S3—C19—H19A | 109.5 |
S3—O1—Co1 | 115.11 (11) | S3—C19—H19B | 109.5 |
C16—N7—Co1 | 161.0 (2) | H19A—C19—H19B | 109.5 |
N3—C15—C14 | 123.6 (2) | S3—C19—H19C | 109.5 |
N3—C15—H15 | 118.2 | H19A—C19—H19C | 109.5 |
C14—C15—H15 | 118.2 | H19B—C19—H19C | 109.5 |
C17—N6—Co1 | 166.3 (3) | S3—C18—H18A | 109.5 |
C9—C8—C7 | 116.7 (2) | S3—C18—H18B | 109.5 |
C9—C8—C13i | 121.3 (2) | H18A—C18—H18B | 109.5 |
C7—C8—C13i | 122.0 (2) | S3—C18—H18C | 109.5 |
C4—C3—C2 | 115.8 (2) | H18A—C18—H18C | 109.5 |
C4—C3—C3ii | 122.5 (3) | H18B—C18—H18C | 109.5 |
C2—C3—C3ii | 121.7 (3) | C11—C12—C13 | 119.8 (2) |
N7—C16—S2 | 178.9 (3) | C11—C12—H12 | 120.1 |
N1—C5—C4 | 124.2 (2) | C13—C12—H12 | 120.1 |
N1—C5—H5 | 117.9 | C14—C13—C12 | 117.1 (2) |
C4—C5—H5 | 117.9 | C14—C13—C8iii | 122.2 (2) |
C8—C9—C10 | 120.0 (2) | C12—C13—C8iii | 120.8 (2) |
C8—C9—H9 | 120.0 | ||
N7—Co1—N3—C11 | −21.36 (19) | N3—Co1—N7—C16 | −124.4 (7) |
N6—Co1—N3—C11 | 145.8 (5) | N2—Co1—N7—C16 | −33.0 (7) |
O1—Co1—N3—C11 | 161.15 (19) | N1—Co1—N7—C16 | 146.2 (7) |
N2—Co1—N3—C11 | −107.05 (18) | C11—N3—C15—C14 | 1.3 (4) |
N1—Co1—N3—C11 | 69.08 (18) | Co1—N3—C15—C14 | 179.32 (19) |
N7—Co1—N3—C15 | 160.68 (19) | N7—Co1—N6—C17 | 180.0 (10) |
N6—Co1—N3—C15 | −32.1 (7) | O1—Co1—N6—C17 | −2.5 (10) |
O1—Co1—N3—C15 | −16.81 (19) | N3—Co1—N6—C17 | 12.8 (14) |
N2—Co1—N3—C15 | 74.99 (19) | N2—Co1—N6—C17 | −94.4 (10) |
N1—Co1—N3—C15 | −108.88 (19) | N1—Co1—N6—C17 | 89.5 (10) |
N7—Co1—N2—C10 | −107.9 (2) | C1—N1—C5—C4 | −1.1 (4) |
N6—Co1—N2—C10 | 158.4 (2) | Co1—N1—C5—C4 | 176.5 (2) |
O1—Co1—N2—C10 | 71.1 (2) | C7—C8—C9—C10 | −1.5 (4) |
N3—Co1—N2—C10 | −13.8 (2) | C13i—C8—C9—C10 | 179.1 (3) |
N1—Co1—N2—C10 | −118.5 (11) | C4—C3—C2—C1 | −1.7 (4) |
N7—Co1—N2—C6 | 69.0 (2) | C3ii—C3—C2—C1 | 178.4 (3) |
N6—Co1—N2—C6 | −24.8 (2) | C15—N3—C11—C12 | 0.4 (4) |
O1—Co1—N2—C6 | −112.0 (2) | Co1—N3—C11—C12 | −177.7 (2) |
N3—Co1—N2—C6 | 163.0 (2) | C6—N2—C10—C9 | 2.0 (4) |
N1—Co1—N2—C6 | 58.4 (12) | Co1—N2—C10—C9 | 178.9 (2) |
N7—Co1—N1—C1 | 116.1 (2) | C8—C9—C10—N2 | −0.6 (5) |
N6—Co1—N1—C1 | −150.2 (2) | N1—C5—C4—C3 | 0.7 (5) |
O1—Co1—N1—C1 | −63.0 (2) | C2—C3—C4—C5 | 0.7 (4) |
N3—Co1—N1—C1 | 21.9 (2) | C3ii—C3—C4—C5 | −179.4 (3) |
N2—Co1—N1—C1 | 126.6 (11) | C5—N1—C1—C2 | 0.1 (4) |
N7—Co1—N1—C5 | −61.4 (2) | Co1—N1—C1—C2 | −177.5 (2) |
N6—Co1—N1—C5 | 32.4 (2) | C3—C2—C1—N1 | 1.4 (5) |
O1—Co1—N1—C5 | 119.5 (2) | C10—N2—C6—C7 | −1.4 (5) |
N3—Co1—N1—C5 | −155.6 (2) | Co1—N2—C6—C7 | −178.5 (3) |
N2—Co1—N1—C5 | −50.8 (12) | N3—C15—C14—C13 | −1.8 (4) |
C19—S3—O1—Co1 | −127.1 (2) | N2—C6—C7—C8 | −0.6 (5) |
C18—S3—O1—Co1 | 128.3 (2) | C9—C8—C7—C6 | 2.0 (5) |
N7—Co1—O1—S3 | 167.2 (18) | C13i—C8—C7—C6 | −178.6 (3) |
N6—Co1—O1—S3 | 55.48 (13) | N3—C11—C12—C13 | −1.6 (4) |
N3—Co1—O1—S3 | −122.38 (13) | C15—C14—C13—C12 | 0.5 (4) |
N2—Co1—O1—S3 | 146.08 (13) | C15—C14—C13—C8iii | −179.4 (2) |
N1—Co1—O1—S3 | −33.25 (13) | C11—C12—C13—C14 | 1.1 (4) |
N6—Co1—N7—C16 | 57.4 (7) | C11—C12—C13—C8iii | −179.0 (2) |
O1—Co1—N7—C16 | −54 (2) |
Symmetry codes: (i) −x+1/2, y+1/2, −z+1/2; (ii) −x+2, −y, −z+1; (iii) −x+1/2, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···S1iv | 0.93 | 2.82 | 3.596 (3) | 141 |
Symmetry code: (iv) −x+3/2, y−1/2, −z+1/2. |
Acknowledgements
The authors gratefully acknowledge The Thailand Research Fund (BRG5680009), the Higher Education Research Promotion and National Research University Project of Thailand, through the Advanced Functional Materials Cluster of Khon Kaen University, and the Center of Excellence for Innovation in Chemistry (PERCH–CIC), Office of the Higher Education Commission, Ministry of Education, Thailand, for financial support.
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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.
Metal organic frameworks can be prepared in variety methods and there are many effects influencing their structures. The solvent used in preparing is one of the most important effects on the structures. The influence of the solvent on the structure has been widely studied, for example in the study of iron(II) thiocyanato coordination polymers based on 4,4'-bipyridine using methanol as a solvent (Wriedt & Näther, 2010). This finding suggested that if more solvent and higher concentration of N-donor ligand were applied the structure is likely to involve with solvent coordination and the different metal to organic ligand ratio. The solvent has the influence on both metal to organic ligand ratio and the arrangement of the organic linker leading to the variation of the dimension and topology of the network (Yao & Wang, 2009). In addition, the type of N-donor organic linkers also affect the structure (Wriedt & Näther, 2009; Wriedt et al., 2009).
Of interest to us was this effect. A new structure with the different metal to N-donor organic ligand ratio might also be possible by alteration of the solvent, type of N-donor organic ligand, and the metal to N-donor ligand ratio in the preparation. In this contribution, we present synthesis and structural characterization of a two-dimensional framework of poly[µ-tris(4,4'-bipyridine)di(dimethyl sulfoxide)tetrathiocyanato-N-dicobalt(II)] (I)
The asymmetric unit of the title compound consists of one CoII centre, two SCN- anions, one and a half 4,4'-bpy molecules and one DMSO molecule (Fig. 1). The CoII is surrounded by two N atoms from terminal SCN- groups, one O atom from DMSO and three N atoms from three 4,4'-bpy (Table 1). The 4,4'-bpy acts as a bridge linking metal centres and generates a two-dimensional structure with rectangular spaces (11.60 x 23.25 Å) within layer (Fig. 2). Due to the arrangement of the linker and metal to N-donor organic ligand ratio of 1:1.5, the space within the layer is twice as compared to the related two-dimensional compound {[Fe(4,4'-bpy)2(SCN)2](MeOH)2}n (Wriedt & Näther, 2010). The layers are stacked in an ABC fashion (Fig. 3). The plane parallel to the layer is (103). The metal atoms in one layer sit above or below the rectangular spaces. As a result, the terminal SCN- and DMSO ligands arrange approximately perpendicular to the layer plane and fill up the spaces between adjacent layers. This arrangement of the layers is in the ABC fashion preventing the occurrence of the interlayer spaces along the crystallographic c axis and hence leading to the absence of lattice solvent and/or organic guest molecules in the interlayer spaces (Fig. 3). In addition, the extended structure of I has been illustrated (Fig. 4). The hydrogen bonds between H1 and S1 link the layers with the distance of 2.82 Å (Table 2). As a result, these layers are assembled into a three-dimensional supramolecular framework.