metal-organic compounds
catena-Poly[silver(I)-bis[μ-4-methyl-1H-1,2,4-triazole-3(4H)-thione-κ2S:S]-silver(I)-di-μ-thiocyanato-κ2S:N;κ2N:S]
aDepartment of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
*Correspondence e-mail: saowanit.sa@psu.ac.th
In the title one-dimensional coordination polymer, [Ag2(NCS)2(C3H5N3S)2]n, the AgI atom adopts a distorted tetrahedral AgNS3 geometry. Adjacent AgI atoms in the [001] chain are alternately linked by pairs of bridging 4-methyl-1H-1,2,4-triazole-3(4H)-thione (Hmptrz) ligands (via their S atoms) and double thiocyanate bridges linking through both S and N atoms (μ-1,3-SCN). An intrachain N—H⋯N hydrogen bond occurs between the NH group of the triazole ring and the N atom of the thiocyanate bridging ligand. A (101) sheet structure arises from interchain S⋯N short contacts [3.239 (3) Å] involving the thiocyanate S atom and the triazole-ring N atom and possible very weak π–π stacking [centroid–centroid separation = 4.0762 (18) Å] between the triazole rings.
Related literature
For examples of complexes with multifunctional ligand donors, see: Zhang et al.(2009); Wang et al. (2011). For background to complexes containing derivatives of the 1,2,4-triazole ligand, see: Zhang et al. (1999); Jiang et al. (2011). For the thiocyanate bridging ligand, end-to-end mode, see: Vicente et al. (1997); Chen et al. (1999); Diaz et al. (1999); Goher et al. (2000); Song et al. (2000); Cai et al. (2007); Saithong et al. (2007).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2003); cell SAINT (Bruker, 2003); 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: SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S160053681300946X/hb7066sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681300946X/hb7066Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S160053681300946X/hb7066Isup3.mol
Supporting information file. DOI: https://doi.org/10.1107/S160053681300946X/hb7066Isup4.mol
A mixture of AgNO3 (0.15 g, 0.88 mmol), KSCN (0.09 g, 0.87 mmol) in EtOH 30 ml was heated and stirred to 75 °C for 1 h. After that, the Hmptrz ligand (0.1 g, 0.087 mmol was added to the mixture and further continuous stirring for 12 h. The colorless crystals of the complex were obtained after the colorless filtrate was kept to stand at room temperature for a day. The complex melts at 130–132°C.
All carbon H-atom of the triazole ring and the methyl group were placed in calculated positions (C-sp2—H = 0.93 and C-sp3= 0.96 Å) and were included in the
in the riding-model approximation, with Uiso(H) = 1.2Ueq(C) and Uiso(H) = 1.5Ueq(C), respectively. The H atom of triazole ring N atom is located in a difference map and restrained, N—H = 0.86 Å with Uiso(H) = 1.2Ueq(N).One of the active areas of meterial research is the coordination compounds of the metal ions with the multifunctional ligands leading to the structural diversities and properties (Zhang et al., 2009; Wang et al., 2011). For this work, we report the mixed ligands Ag(I) complex containg multidonor atoms, 4-methyl-1,2,4-triazole-3-thiol (Hmptrz) and thiocyanate ligands. The Hmptrz is one of 1,2,4-triazole derivative ligands - based heterocyclic thioamide containing thiol group which has three potential donor atoms. Both Hmptrz and thiocyanate group are amphidentate ligands, which can bind to the metal center with either the N or S atom or both of them (Zhang et al., 1999; Jiang et al., 2011).
The title complex exhibits a one-dimensional chain polymeric structure and the
consists of one Ag(I) atom, one Hmptrz molecule and one SCN- anion. The chemical structure of this complex is shown in Scheme I and the is depicted in Figure 1.The Ag atom features a distorted tetrahedral environment with the range of angles from 101.00 (2) to 124.52 (3)o. Each Ag is bonded by two µ2-S-bridging atoms of two Hmptrz molecules with the distances of 2.5554 (8) and 2.6688 (8) Å. The other two coordination sites are occupied by S and N atoms from the different µ2-1,3-SCN bridges coordinated as a pair alternating bidentate end to end fashion similar to those complexes of the same thiocyanate bridges (Chen et al., 1999; Diaz et al., 1999; Goher et al., 2000; Song et al., 2000; Cai et al., 2007; Saithong et al. 2007). The Cu—Sthiocyanato and Cu—Nthiocyanato bond distances are 2.4987 (8) and 2.2354 (4) Å, respectively. The SCN bond angle is almost perfectly linear [178.6 (3)°] as compare with the same µ2-1,3-SCN configuration mode of those complexes (Vicente et al.,1997; Song et al., 2000). The S2—C4 and C4—N4 distances [1.646 (3) and 1.150 (4) Å] refer to thiocyanate resonance form which indicate to a π-delocalized system along the metal-thiocyanate chain (Zhang et al., 1999).
An infintite one-dimensional structure of this complex is based on [Ag(µ2-Hmptrz)(µ2-1,3-SCN)] double-bridges, in which both Hmptrz and SCN- ligands adopt the µ2-end-on and µ2-end-to-end bridging mode, respectively. As illustated in Figure 2, the Hmptrz and thiocyanato ligands interconnect the Ag(I) ions into an infinite chain generated by the unit c translation runing parallel to c axis, which consist of four-membered ring [—Ag—S—Ag—S—] and eight-membered ring [—Ag—S═C═N—Ag—S═C═N—]. In addition, The Ag···Ag separation with the distances of 3.3241 (5) Å in the four-membered ring is slighty shorter than the sum of the van der Waals radii of Ag atoms (3.44 Å), which indicates that there is the Ag···Ag interaction.
The weak intra-molecular hydrogen bonding interaction [N1—H1···N4i, (i) = -x + 1, -y, -z + 1] is found between N(1) of triazole ring and N(4) of thiocyanate bridging ligand at 2.954 (4) Å. The inter-short contact at 3.239 (3) Å arises from S2 donor of triazole ring with N2 acceptor from the thiocyanate bridge of the neighbouring adjacent chain which is smaller than the sum of S and N van der Waals radii (1.80 + 1.55 Å). In addition, the π···π stacking between the triazole rings of the neighbouring chain is observed with the centroid-centriod distance of 4.0762 (18) Å. Both of these interactions generate the supramolecular layer interactions related by ac-plane. A view of intra-molecular hydrogen bonding is depected in Figure 3 and The layered network interactions in crystal packing are shown in Figure 4.
For examples of complexes with multifunctional ligand donors, see: Zhang et al.(2009); Wang et al. (2011). For background to complexes containing derivatives of the 1,2,4-triazole ligand, see: Zhang et al. (1999); Jiang et al. (2011). For the thiocyanate bridging ligand, end-to-end mode, see: Vicente et al. (1997); Chen et al. (1999); Diaz et al. (1999); Goher et al. (2000); Song et al. (2000); Cai et al. (2007); Saithong et al. (2007).
Data collection: SMART (Bruker, 2003); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); 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: SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009) and publCIF (Westrip, 2010).[Ag2(NCS)2(C3H5N3S)2] | Z = 1 |
Mr = 562.22 | F(000) = 272 |
Triclinic, P1 | Dx = 2.209 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.4842 (6) Å | Cell parameters from 3160 reflections |
b = 7.5420 (6) Å | θ = 2.5–28.1° |
c = 8.4262 (7) Å | µ = 2.82 mm−1 |
α = 79.985 (2)° | T = 293 K |
β = 84.329 (2)° | Block, colourless |
γ = 64.508 (1)° | 0.31 × 0.12 × 0.05 mm |
V = 422.62 (6) Å3 |
Bruker APEX CCD diffractometer | 2083 independent reflections |
Radiation source: fine-focus sealed tube | 1904 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
Frames, each covering 0.3 ° in ω scans | θmax = 28.3°, θmin = 2.5° |
Absorption correction: multi-scan (SADABS; Bruker, 2003) | h = −9→9 |
Tmin = 0.682, Tmax = 0.879 | k = −10→10 |
5887 measured reflections | l = −11→11 |
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)] = 0.029 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.070 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0262P)2 + 0.3652P] where P = (Fo2 + 2Fc2)/3 |
2083 reflections | (Δ/σ)max < 0.001 |
104 parameters | Δρmax = 0.79 e Å−3 |
1 restraint | Δρmin = −0.63 e Å−3 |
[Ag2(NCS)2(C3H5N3S)2] | γ = 64.508 (1)° |
Mr = 562.22 | V = 422.62 (6) Å3 |
Triclinic, P1 | Z = 1 |
a = 7.4842 (6) Å | Mo Kα radiation |
b = 7.5420 (6) Å | µ = 2.82 mm−1 |
c = 8.4262 (7) Å | T = 293 K |
α = 79.985 (2)° | 0.31 × 0.12 × 0.05 mm |
β = 84.329 (2)° |
Bruker APEX CCD diffractometer | 2083 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2003) | 1904 reflections with I > 2σ(I) |
Tmin = 0.682, Tmax = 0.879 | Rint = 0.026 |
5887 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 1 restraint |
wR(F2) = 0.070 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.79 e Å−3 |
2083 reflections | Δρmin = −0.63 e Å−3 |
104 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 | ||
Ag1 | 0.43439 (4) | 0.06942 (4) | 0.18148 (3) | 0.06373 (11) | |
S1 | 0.45768 (10) | 0.28186 (11) | −0.08435 (10) | 0.04902 (17) | |
N1 | 0.8089 (4) | 0.2218 (4) | 0.0367 (3) | 0.0471 (5) | |
H1 | 0.784 (5) | 0.168 (5) | 0.130 (3) | 0.057* | |
N2 | 0.9737 (4) | 0.2569 (4) | −0.0040 (3) | 0.0580 (7) | |
N3 | 0.7724 (3) | 0.3598 (3) | −0.2066 (3) | 0.0443 (5) | |
C1 | 0.6839 (4) | 0.2840 (4) | −0.0829 (3) | 0.0399 (5) | |
C2 | 0.9452 (4) | 0.3410 (5) | −0.1505 (4) | 0.0548 (7) | |
H2 | 1.0329 | 0.3844 | −0.2120 | 0.066* | |
C3 | 0.6939 (6) | 0.4444 (6) | −0.3672 (4) | 0.0614 (8) | |
H3A | 0.6677 | 0.3493 | −0.4116 | 0.092* | |
H3B | 0.7889 | 0.4779 | −0.4352 | 0.092* | |
H3C | 0.5733 | 0.5619 | −0.3608 | 0.092* | |
S2 | 0.13129 (11) | 0.14847 (14) | 0.36025 (10) | 0.0576 (2) | |
C4 | 0.2341 (4) | 0.0469 (5) | 0.5367 (4) | 0.0479 (6) | |
N4 | 0.3024 (4) | −0.0245 (5) | 0.6610 (3) | 0.0661 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ag1 | 0.06481 (18) | 0.0881 (2) | 0.05807 (16) | −0.04888 (16) | 0.01183 (12) | −0.02344 (13) |
S1 | 0.0410 (4) | 0.0516 (4) | 0.0602 (4) | −0.0237 (3) | −0.0010 (3) | −0.0116 (3) |
N1 | 0.0437 (12) | 0.0499 (13) | 0.0494 (13) | −0.0240 (11) | −0.0036 (10) | 0.0014 (10) |
N2 | 0.0431 (13) | 0.0646 (16) | 0.0680 (17) | −0.0281 (12) | −0.0086 (12) | 0.0049 (13) |
N3 | 0.0451 (12) | 0.0457 (12) | 0.0454 (12) | −0.0225 (10) | 0.0004 (9) | −0.0069 (10) |
C1 | 0.0400 (13) | 0.0357 (12) | 0.0466 (13) | −0.0172 (10) | 0.0015 (10) | −0.0107 (10) |
C2 | 0.0427 (15) | 0.0599 (18) | 0.0645 (19) | −0.0275 (14) | −0.0007 (13) | −0.0007 (15) |
C3 | 0.073 (2) | 0.072 (2) | 0.0447 (15) | −0.0374 (18) | −0.0050 (15) | −0.0028 (14) |
S2 | 0.0427 (4) | 0.0772 (5) | 0.0541 (4) | −0.0308 (4) | −0.0013 (3) | 0.0023 (4) |
C4 | 0.0431 (14) | 0.0621 (17) | 0.0496 (15) | −0.0326 (13) | 0.0082 (12) | −0.0135 (13) |
N4 | 0.0619 (17) | 0.100 (2) | 0.0501 (15) | −0.0486 (17) | −0.0010 (13) | −0.0081 (15) |
Ag1—N4i | 2.354 (3) | N3—C1 | 1.354 (3) |
Ag1—S2 | 2.4987 (8) | N3—C2 | 1.363 (4) |
Ag1—S1 | 2.5554 (8) | N3—C3 | 1.455 (4) |
Ag1—S1ii | 2.6688 (8) | C2—H2 | 0.9300 |
Ag1—Ag1ii | 3.3241 (5) | C3—H3A | 0.9600 |
S1—C1 | 1.701 (3) | C3—H3B | 0.9600 |
S1—Ag1ii | 2.6688 (8) | C3—H3C | 0.9600 |
N1—C1 | 1.325 (3) | S2—C4 | 1.646 (3) |
N1—N2 | 1.369 (3) | C4—N4 | 1.150 (4) |
N1—H1 | 0.860 (18) | N4—Ag1i | 2.354 (3) |
N2—C2 | 1.278 (4) | ||
N4i—Ag1—S2 | 107.73 (7) | C1—N3—C3 | 125.5 (2) |
N4i—Ag1—S1 | 106.91 (7) | C2—N3—C3 | 127.7 (3) |
S2—Ag1—S1 | 124.52 (3) | N1—C1—N3 | 104.4 (2) |
N4i—Ag1—S1ii | 104.55 (9) | N1—C1—S1 | 129.2 (2) |
S2—Ag1—S1ii | 110.41 (3) | N3—C1—S1 | 126.3 (2) |
S1—Ag1—S1ii | 101.00 (2) | N2—C2—N3 | 112.6 (3) |
N4i—Ag1—Ag1ii | 115.17 (8) | N2—C2—H2 | 123.7 |
S2—Ag1—Ag1ii | 135.70 (2) | N3—C2—H2 | 123.7 |
S1—Ag1—Ag1ii | 52.010 (19) | N3—C3—H3A | 109.5 |
S1ii—Ag1—Ag1ii | 48.991 (18) | N3—C3—H3B | 109.5 |
C1—S1—Ag1 | 104.45 (10) | H3A—C3—H3B | 109.5 |
C1—S1—Ag1ii | 99.55 (9) | N3—C3—H3C | 109.5 |
Ag1—S1—Ag1ii | 79.00 (2) | H3A—C3—H3C | 109.5 |
C1—N1—N2 | 113.0 (2) | H3B—C3—H3C | 109.5 |
C1—N1—H1 | 122 (2) | C4—S2—Ag1 | 100.04 (10) |
N2—N1—H1 | 125 (2) | N4—C4—S2 | 178.6 (3) |
C2—N2—N1 | 103.3 (2) | C4—N4—Ag1i | 142.0 (2) |
C1—N3—C2 | 106.7 (2) | ||
N4i—Ag1—S1—C1 | 11.91 (13) | C3—N3—C1—S1 | −3.5 (4) |
S2—Ag1—S1—C1 | 138.45 (9) | Ag1—S1—C1—N1 | −10.7 (3) |
S1ii—Ag1—S1—C1 | −97.15 (9) | Ag1ii—S1—C1—N1 | −91.7 (3) |
Ag1ii—Ag1—S1—C1 | −97.15 (9) | Ag1—S1—C1—N3 | 172.3 (2) |
N4i—Ag1—S1—Ag1ii | 109.06 (9) | Ag1ii—S1—C1—N3 | 91.3 (2) |
S2—Ag1—S1—Ag1ii | −124.40 (3) | N1—N2—C2—N3 | −0.6 (4) |
S1ii—Ag1—S1—Ag1ii | 0.0 | C1—N3—C2—N2 | 1.2 (4) |
C1—N1—N2—C2 | −0.2 (4) | C3—N3—C2—N2 | −178.9 (3) |
N2—N1—C1—N3 | 0.9 (3) | N4i—Ag1—S2—C4 | −24.14 (14) |
N2—N1—C1—S1 | −176.7 (2) | S1—Ag1—S2—C4 | −150.33 (11) |
C2—N3—C1—N1 | −1.2 (3) | S1ii—Ag1—S2—C4 | 89.46 (11) |
C3—N3—C1—N1 | 178.9 (3) | Ag1ii—Ag1—S2—C4 | 141.07 (11) |
C2—N3—C1—S1 | 176.4 (2) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+1, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N4i | 0.86 (2) | 2.10 (2) | 2.954 (4) | 171 (3) |
Symmetry code: (i) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Ag2(NCS)2(C3H5N3S)2] |
Mr | 562.22 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.4842 (6), 7.5420 (6), 8.4262 (7) |
α, β, γ (°) | 79.985 (2), 84.329 (2), 64.508 (1) |
V (Å3) | 422.62 (6) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 2.82 |
Crystal size (mm) | 0.31 × 0.12 × 0.05 |
Data collection | |
Diffractometer | Bruker APEX CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2003) |
Tmin, Tmax | 0.682, 0.879 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5887, 2083, 1904 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.070, 1.05 |
No. of reflections | 2083 |
No. of parameters | 104 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.79, −0.63 |
Computer programs: SMART (Bruker, 2003), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), Mercury (Macrae et al., 2008), SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Ag1—N4i | 2.354 (3) | Ag1—S1 | 2.5554 (8) |
Ag1—S2 | 2.4987 (8) | Ag1—S1ii | 2.6688 (8) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+1, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N4i | 0.860 (18) | 2.101 (19) | 2.954 (4) | 171 (3) |
Symmetry code: (i) −x+1, −y, −z+1. |
Acknowledgements
Financial support from the Center of Excellent for Innovation in Chemistry (PERCH-CIC), Office of the Higher Education Commission, Ministry of Education, and Graduate School, Prince of Songkla University, are gratefully acknowledge.
References
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One of the active areas of meterial research is the coordination compounds of the metal ions with the multifunctional ligands leading to the structural diversities and properties (Zhang et al., 2009; Wang et al., 2011). For this work, we report the mixed ligands Ag(I) complex containg multidonor atoms, 4-methyl-1,2,4-triazole-3-thiol (Hmptrz) and thiocyanate ligands. The Hmptrz is one of 1,2,4-triazole derivative ligands - based heterocyclic thioamide containing thiol group which has three potential donor atoms. Both Hmptrz and thiocyanate group are amphidentate ligands, which can bind to the metal center with either the N or S atom or both of them (Zhang et al., 1999; Jiang et al., 2011).
The title complex exhibits a one-dimensional chain polymeric structure and the asymmetric unit consists of one Ag(I) atom, one Hmptrz molecule and one SCN- anion. The chemical structure of this complex is shown in Scheme I and the crystal structure is depicted in Figure 1.
The Ag atom features a distorted tetrahedral environment with the range of angles from 101.00 (2) to 124.52 (3)o. Each Ag is bonded by two µ2-S-bridging atoms of two Hmptrz molecules with the distances of 2.5554 (8) and 2.6688 (8) Å. The other two coordination sites are occupied by S and N atoms from the different µ2-1,3-SCN bridges coordinated as a pair alternating bidentate end to end fashion similar to those complexes of the same thiocyanate bridges (Chen et al., 1999; Diaz et al., 1999; Goher et al., 2000; Song et al., 2000; Cai et al., 2007; Saithong et al. 2007). The Cu—Sthiocyanato and Cu—Nthiocyanato bond distances are 2.4987 (8) and 2.2354 (4) Å, respectively. The SCN bond angle is almost perfectly linear [178.6 (3)°] as compare with the same µ2-1,3-SCN configuration mode of those complexes (Vicente et al.,1997; Song et al., 2000). The S2—C4 and C4—N4 distances [1.646 (3) and 1.150 (4) Å] refer to thiocyanate resonance form which indicate to a π-delocalized system along the metal-thiocyanate chain (Zhang et al., 1999).
An infintite one-dimensional structure of this complex is based on [Ag(µ2-Hmptrz)(µ2-1,3-SCN)] double-bridges, in which both Hmptrz and SCN- ligands adopt the µ2-end-on and µ2-end-to-end bridging mode, respectively. As illustated in Figure 2, the Hmptrz and thiocyanato ligands interconnect the Ag(I) ions into an infinite chain generated by the unit c translation runing parallel to c axis, which consist of four-membered ring [—Ag—S—Ag—S—] and eight-membered ring [—Ag—S═C═N—Ag—S═C═N—]. In addition, The Ag···Ag separation with the distances of 3.3241 (5) Å in the four-membered ring is slighty shorter than the sum of the van der Waals radii of Ag atoms (3.44 Å), which indicates that there is the Ag···Ag interaction.
The weak intra-molecular hydrogen bonding interaction [N1—H1···N4i, (i) = -x + 1, -y, -z + 1] is found between N(1) of triazole ring and N(4) of thiocyanate bridging ligand at 2.954 (4) Å. The inter-short contact at 3.239 (3) Å arises from S2 donor of triazole ring with N2 acceptor from the thiocyanate bridge of the neighbouring adjacent chain which is smaller than the sum of S and N van der Waals radii (1.80 + 1.55 Å). In addition, the π···π stacking between the triazole rings of the neighbouring chain is observed with the centroid-centriod distance of 4.0762 (18) Å. Both of these interactions generate the supramolecular layer interactions related by ac-plane. A view of intra-molecular hydrogen bonding is depected in Figure 3 and The layered network interactions in crystal packing are shown in Figure 4.