Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807034897/hk2295sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807034897/hk2295Isup2.hkl |
CCDC reference: 657629
Key indicators
- Single-crystal X-ray study
- T = 298 K
- Mean (C-C) = 0.004 Å
- R factor = 0.026
- wR factor = 0.066
- Data-to-parameter ratio = 20.2
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT241_ALERT_2_C Check High Ueq as Compared to Neighbors for C14 PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for N4 PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C12 PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor .... 2.04
Alert level G PLAT794_ALERT_5_G Check Predicted Bond Valency for Mn1 (2) 2.03
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 4 ALERT type 2 Indicator that the structure model may be wrong or deficient 0 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check
MnCl2.4H2O (0.5 mmol) and edp (0.5 mmol) were dissolved in water (15 ml), then obtained red precipitation were filtered off. The filtrate and 15 ml aqueous solution containing K[Ag(CN)2] (1.0 mmol) were slowly mixed in a H-shaped tube. A few day later, colorless crystals of {Mn(edp)2[Ag(CN)2]2} were obtained. Elemental analysis calculated for C28H24Ag2MnN8: C 45.24%, H 3.25%, N 15.08%; found, C 45.10%, H 3.43%, N 14.85%. IR spectrum data (nujol technique): νCN 2142 cm-1.
H atoms were positioned geometrically, with C—H = 0.93 and 0.97 Å for aromatic and methylene H atoms, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C).
Many of the bimetallic doubly interpenetrated three-dimensional coordination polymers of formula {M(L)2[Ag(CN)2]2} [M = Cd; L = 4,4'-bpy (Soma et al., 1994), M = Cd; L = dppn (Soma & Iwamoto, 1997), M = Fe; L = 4,4'-bpy, M = Fe; L = bpe (Niel et al., 2002), M = Mn; L = 4,4'-bpy (Dong et al., 2003), M = Cu; L = 4,4'-bpy (Maher & Sykora, 2007)] [4,4'-bpy = 4,4'-bipyridyl, dppn = 1,3-bis(4-pyridyl)-propane, bpe = trans-1,2-bis(4-pyridyl)-ethylene] were reported. In 2002, the spin-crossover behavior was reported in {Fe(4,4'-bpy)2[Ag(CN)2]2} at high pressure, and the spin-crossover phenomena with a large hysteresis loop at about 95 K was discovered in {Fe(bpe)2[Ag(CN)2]2} (Niel et al., 2002). We report herein the synthesis and crystal structure of a new bimetallic double interpenetrated three-dimensional coordination polymer of formula {Mn(edp)2[Ag(CN)2]2} (I) [edp = 1,2-bis(4-pyridyl)-ethane].
In the title compound, (I), Mn1 is located on an inversion center and each MnII is linked by four µ-[Ag(CN)2]-. Each [Ag(CN)2]- unit connects two manganese atoms defining the edges of a large {Mn4[Ag(CN)2]4} mesh. The Mn···Mn distance through the Mn—NC—Ag—CN—Mn edge is 9.958 Å, whereas the Mn···Mn separations through the diagonals of the mesh are 13.245 and 14.873 Å. The puckered meshwork structure extends across [1 0 - 1] plane of the cell to form a 2-D layer of molecular brick wall composed of MnII and [Ag(CN)2]- in a 1:2 ratio. A similar sheet structure was found for [Mn(SCN)2(C2H5OH)2] (McElearney et al., 1979; Defotis et al., 1990) and [Mn(dca)2(C2H5OH)2](CH3)2CO (Batten et al., 1999).
The MnII atom in the network coordinates to two edp lignads in a trans arrangement to attain the inversion center of a MnN6 octahedral coordination. The dihedral angle between the pyridine rings of the edp ligand is 82.4 (1)°. Different Mn—Ag meshworks are connected through the edp ligands to form the three-dimensional structure. AgI atom is three-coordinate, with two carbon atoms from CN- and one nitrogen atom from edp ligand, consequently, the C1—Ag1—C2 moiety is bent [C1—Ag1—C2 = 156.57 (9)°]. The crystal structure of (I) is the 3-D interpenetrating double framework formed from two three-dimensional molecules interpenetrating each other, similar to that of {M(4,4'-bpy)2[Ag(CN)2]2} [M = Cd (Soma et al., 1994), M = Fe (Niel et al., 2002), M = Mn (Dong et al., 2003), M = Cu (Maher & Sykora, 2007)] and {Fe(bpe)2[Ag(CN)2]2} (Niel et al., 2002).
For related structures, see: Soma et al. (1994); Soma & Iwamoto (1997); Niel et al. (2002); Dong et al. (2003); Maher & Sykora (2007); McElearney et al. (1979); Defotis et al. (1990); Batten et al. (1999).
Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 2000); software used to prepare material for publication: SHELXTL.
[Ag2Mn(CN)4(C12H12N2)2] | F(000) = 734 |
Mr = 743.23 | Dx = 1.699 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4339 reflections |
a = 9.1784 (11) Å | θ = 2.3–28.2° |
b = 13.2446 (16) Å | µ = 1.80 mm−1 |
c = 11.9536 (14) Å | T = 298 K |
β = 91.550 (2)° | Block, colorless |
V = 1452.6 (3) Å3 | 0.25 × 0.11 × 0.11 mm |
Z = 2 |
Bruker SMART CCD area-detector diffractometer | 3598 independent reflections |
Radiation source: fine-focus sealed tube | 2884 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
Detector resolution: 8.366 pixels mm-1 | θmax = 28.3°, θmin = 2.3° |
φ and ω scans | h = −11→12 |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | k = −17→17 |
Tmin = 0.663, Tmax = 0.827 | l = −15→7 |
10581 measured reflections |
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)] = 0.026 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.066 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0319P)2 + 0.3909P] where P = (Fo2 + 2Fc2)/3 |
3598 reflections | (Δ/σ)max = 0.003 |
178 parameters | Δρmax = 0.58 e Å−3 |
0 restraints | Δρmin = −0.46 e Å−3 |
[Ag2Mn(CN)4(C12H12N2)2] | V = 1452.6 (3) Å3 |
Mr = 743.23 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.1784 (11) Å | µ = 1.80 mm−1 |
b = 13.2446 (16) Å | T = 298 K |
c = 11.9536 (14) Å | 0.25 × 0.11 × 0.11 mm |
β = 91.550 (2)° |
Bruker SMART CCD area-detector diffractometer | 3598 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2884 reflections with I > 2σ(I) |
Tmin = 0.663, Tmax = 0.827 | Rint = 0.022 |
10581 measured reflections |
R[F2 > 2σ(F2)] = 0.026 | 0 restraints |
wR(F2) = 0.066 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.58 e Å−3 |
3598 reflections | Δρmin = −0.46 e Å−3 |
178 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 | ||
Mn1 | 0.5000 | 1.0000 | 0.0000 | 0.03002 (11) | |
Ag1 | 0.241172 (19) | 1.336662 (14) | −0.134524 (15) | 0.04139 (7) | |
N1 | 0.1379 (2) | 1.46406 (16) | −0.35068 (17) | 0.0432 (5) | |
N2 | 0.4096 (2) | 1.15716 (14) | −0.00741 (19) | 0.0436 (5) | |
N3 | 0.3127 (2) | 0.95122 (16) | 0.11267 (16) | 0.0408 (4) | |
N4 | −0.4954 (2) | 0.84446 (18) | 0.5562 (2) | 0.0578 (6) | |
C1 | 0.1871 (2) | 1.42740 (18) | −0.2729 (2) | 0.0392 (5) | |
C2 | 0.3545 (2) | 1.22646 (18) | −0.0448 (2) | 0.0393 (5) | |
C3 | 0.3207 (3) | 0.8754 (2) | 0.1835 (3) | 0.0573 (7) | |
H3 | 0.4106 | 0.8441 | 0.1948 | 0.069* | |
C4 | 0.2044 (3) | 0.8393 (2) | 0.2424 (3) | 0.0614 (8) | |
H4 | 0.2169 | 0.7844 | 0.2902 | 0.074* | |
C5 | 0.0705 (3) | 0.8843 (2) | 0.2303 (2) | 0.0455 (6) | |
C6 | 0.0629 (3) | 0.9656 (2) | 0.1596 (3) | 0.0628 (8) | |
H6 | −0.0246 | 1.0003 | 0.1497 | 0.075* | |
C7 | 0.1837 (3) | 0.9963 (2) | 0.1029 (3) | 0.0598 (8) | |
H7 | 0.1745 | 1.0516 | 0.0553 | 0.072* | |
C8 | −0.0620 (3) | 0.8473 (2) | 0.2895 (2) | 0.0510 (7) | |
H8A | −0.0505 | 0.7760 | 0.3059 | 0.061* | |
H8B | −0.1469 | 0.8550 | 0.2401 | 0.061* | |
C9 | −0.0876 (2) | 0.90353 (18) | 0.3971 (2) | 0.0415 (5) | |
H9A | −0.0852 | 0.9754 | 0.3817 | 0.050* | |
H9B | −0.0078 | 0.8887 | 0.4494 | 0.050* | |
C10 | −0.4551 (3) | 0.7921 (3) | 0.4693 (3) | 0.0711 (10) | |
H10 | −0.5174 | 0.7420 | 0.4420 | 0.085* | |
C11 | −0.3253 (3) | 0.8073 (3) | 0.4160 (3) | 0.0696 (10) | |
H11 | −0.3032 | 0.7680 | 0.3543 | 0.084* | |
C12 | −0.2292 (2) | 0.87926 (19) | 0.4528 (2) | 0.0414 (5) | |
C13 | −0.2709 (3) | 0.9332 (3) | 0.5439 (3) | 0.0755 (11) | |
H13 | −0.2104 | 0.9837 | 0.5730 | 0.091* | |
C14 | −0.4017 (4) | 0.9134 (3) | 0.5928 (3) | 0.0834 (12) | |
H14 | −0.4257 | 0.9508 | 0.6556 | 0.100* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.0278 (2) | 0.0349 (2) | 0.0275 (2) | 0.00197 (17) | 0.00304 (17) | 0.00079 (18) |
Ag1 | 0.04233 (11) | 0.04225 (11) | 0.03938 (11) | 0.00550 (7) | −0.00247 (7) | 0.00415 (8) |
N1 | 0.0406 (10) | 0.0512 (12) | 0.0375 (11) | 0.0005 (9) | −0.0021 (9) | 0.0046 (9) |
N2 | 0.0429 (11) | 0.0405 (11) | 0.0475 (12) | 0.0059 (9) | 0.0028 (9) | 0.0021 (9) |
N3 | 0.0334 (10) | 0.0516 (12) | 0.0380 (11) | −0.0005 (8) | 0.0091 (8) | 0.0052 (9) |
N4 | 0.0445 (12) | 0.0736 (16) | 0.0563 (14) | −0.0162 (11) | 0.0199 (11) | −0.0152 (12) |
C1 | 0.0339 (11) | 0.0454 (13) | 0.0383 (13) | −0.0020 (9) | 0.0035 (9) | 0.0014 (10) |
C2 | 0.0373 (12) | 0.0409 (13) | 0.0399 (13) | 0.0033 (10) | 0.0033 (9) | −0.0004 (10) |
C3 | 0.0382 (13) | 0.0735 (18) | 0.0610 (18) | 0.0115 (13) | 0.0173 (12) | 0.0196 (15) |
C4 | 0.0537 (16) | 0.0674 (19) | 0.0641 (19) | 0.0053 (13) | 0.0227 (14) | 0.0251 (15) |
C5 | 0.0399 (13) | 0.0551 (15) | 0.0421 (14) | −0.0094 (11) | 0.0136 (10) | −0.0062 (12) |
C6 | 0.0351 (13) | 0.077 (2) | 0.077 (2) | 0.0072 (13) | 0.0167 (13) | 0.0183 (17) |
C7 | 0.0413 (14) | 0.0680 (18) | 0.071 (2) | 0.0084 (12) | 0.0161 (13) | 0.0277 (16) |
C8 | 0.0436 (14) | 0.0595 (16) | 0.0506 (15) | −0.0147 (11) | 0.0152 (12) | −0.0066 (12) |
C9 | 0.0343 (12) | 0.0445 (13) | 0.0461 (14) | −0.0037 (9) | 0.0069 (10) | 0.0000 (11) |
C10 | 0.0570 (17) | 0.077 (2) | 0.080 (2) | −0.0310 (16) | 0.0327 (16) | −0.0325 (18) |
C11 | 0.0609 (18) | 0.075 (2) | 0.075 (2) | −0.0235 (15) | 0.0359 (16) | −0.0332 (17) |
C12 | 0.0339 (11) | 0.0459 (13) | 0.0447 (14) | −0.0035 (10) | 0.0080 (10) | 0.0000 (11) |
C13 | 0.0533 (17) | 0.102 (3) | 0.073 (2) | −0.0369 (17) | 0.0248 (15) | −0.0392 (19) |
C14 | 0.0620 (19) | 0.114 (3) | 0.076 (2) | −0.0366 (19) | 0.0344 (17) | −0.049 (2) |
Ag1—C1 | 2.093 (2) | C9—H9A | 0.9700 |
Ag1—C2 | 2.074 (2) | C9—H9B | 0.9700 |
Ag1—N4i | 2.468 (2) | C10—N4 | 1.310 (4) |
C1—N1 | 1.132 (3) | C10—C11 | 1.380 (4) |
C2—N2 | 1.134 (3) | C10—H10 | 0.9300 |
C3—N3 | 1.314 (3) | C11—C12 | 1.364 (4) |
C3—C4 | 1.380 (4) | C11—H11 | 0.9300 |
C3—H3 | 0.9300 | C12—C13 | 1.366 (4) |
C4—C5 | 1.370 (4) | C13—C14 | 1.375 (4) |
C4—H4 | 0.9300 | C13—H13 | 0.9300 |
C5—C6 | 1.370 (4) | C14—N4 | 1.321 (4) |
C5—C8 | 1.505 (3) | C14—H14 | 0.9300 |
C6—C7 | 1.376 (4) | Mn1—N1ii | 2.212 (2) |
C6—H6 | 0.9300 | Mn1—N1iii | 2.212 (2) |
C7—N3 | 1.329 (3) | Mn1—N2iv | 2.2417 (19) |
C7—H7 | 0.9300 | Mn1—N2 | 2.2418 (19) |
C8—C9 | 1.510 (3) | Mn1—N3 | 2.3049 (18) |
C8—H8A | 0.9700 | Mn1—N3iv | 2.3049 (18) |
C8—H8B | 0.9700 | N1—Mn1v | 2.212 (2) |
C9—C12 | 1.511 (3) | N4—Ag1vi | 2.468 (2) |
C1—Ag1—C2 | 156.57 (9) | C12—C11—C10 | 120.7 (3) |
C2—Ag1—N4i | 106.49 (8) | C12—C11—H11 | 119.6 |
C1—Ag1—N4i | 94.36 (8) | C10—C11—H11 | 119.6 |
N1—C1—Ag1 | 167.4 (2) | C11—C12—C13 | 115.5 (2) |
N2—C2—Ag1 | 170.2 (2) | C11—C12—C9 | 124.3 (2) |
N3—C3—C4 | 124.3 (3) | C13—C12—C9 | 120.2 (2) |
N3—C3—H3 | 117.9 | C12—C13—C14 | 120.4 (3) |
C4—C3—H3 | 117.9 | C12—C13—H13 | 119.8 |
C5—C4—C3 | 120.0 (3) | C14—C13—H13 | 119.8 |
C5—C4—H4 | 120.0 | N4—C14—C13 | 124.0 (3) |
C3—C4—H4 | 120.0 | N4—C14—H14 | 118.0 |
C4—C5—C6 | 116.0 (2) | C13—C14—H14 | 118.0 |
C4—C5—C8 | 122.9 (3) | N1ii—Mn1—N1iii | 180.0 |
C6—C5—C8 | 121.1 (2) | N1ii—Mn1—N2iv | 87.98 (8) |
C5—C6—C7 | 120.5 (3) | N1iii—Mn1—N2iv | 92.02 (8) |
C5—C6—H6 | 119.8 | N1ii—Mn1—N2 | 92.02 (8) |
C7—C6—H6 | 119.8 | N1iii—Mn1—N2 | 87.98 (8) |
N3—C7—C6 | 123.5 (3) | N2iv—Mn1—N2 | 180.0 |
N3—C7—H7 | 118.3 | N1ii—Mn1—N3 | 90.47 (7) |
C6—C7—H7 | 118.3 | N1iii—Mn1—N3 | 89.53 (7) |
C5—C8—C9 | 112.8 (2) | N2iv—Mn1—N3 | 89.88 (8) |
C5—C8—H8A | 109.0 | N2—Mn1—N3 | 90.12 (8) |
C9—C8—H8A | 109.0 | N1ii—Mn1—N3iv | 89.53 (7) |
C5—C8—H8B | 109.0 | N1iii—Mn1—N3iv | 90.47 (7) |
C9—C8—H8B | 109.0 | N2iv—Mn1—N3iv | 90.12 (8) |
H8A—C8—H8B | 107.8 | N2—Mn1—N3iv | 89.88 (8) |
C8—C9—C12 | 115.2 (2) | N3—Mn1—N3iv | 180.00 (10) |
C8—C9—H9A | 108.5 | C1—N1—Mn1v | 164.15 (19) |
C12—C9—H9A | 108.5 | C2—N2—Mn1 | 158.1 (2) |
C8—C9—H9B | 108.5 | C3—N3—C7 | 115.7 (2) |
C12—C9—H9B | 108.5 | C3—N3—Mn1 | 124.14 (16) |
H9A—C9—H9B | 107.5 | C7—N3—Mn1 | 119.99 (17) |
N4—C10—C11 | 123.7 (3) | C10—N4—C14 | 115.7 (2) |
N4—C10—H10 | 118.2 | C10—N4—Ag1vi | 124.01 (19) |
C11—C10—H10 | 118.2 | C14—N4—Ag1vi | 119.78 (19) |
Symmetry codes: (i) −x−1/2, y+1/2, −z+1/2; (ii) x+1/2, −y+5/2, z+1/2; (iii) −x+1/2, y−1/2, −z−1/2; (iv) −x+1, −y+2, −z; (v) −x+1/2, y+1/2, −z−1/2; (vi) −x−1/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Ag2Mn(CN)4(C12H12N2)2] |
Mr | 743.23 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 298 |
a, b, c (Å) | 9.1784 (11), 13.2446 (16), 11.9536 (14) |
β (°) | 91.550 (2) |
V (Å3) | 1452.6 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.80 |
Crystal size (mm) | 0.25 × 0.11 × 0.11 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.663, 0.827 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10581, 3598, 2884 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.026, 0.066, 1.04 |
No. of reflections | 3598 |
No. of parameters | 178 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.58, −0.46 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 2000), SHELXTL.
Ag1—C1 | 2.093 (2) | Mn1—N1ii | 2.212 (2) |
Ag1—C2 | 2.074 (2) | Mn1—N2 | 2.2418 (19) |
Ag1—N4i | 2.468 (2) | Mn1—N3 | 2.3049 (18) |
C1—Ag1—C2 | 156.57 (9) | N1iii—Mn1—N2 | 92.02 (8) |
C2—Ag1—N4i | 106.49 (8) | N1iii—Mn1—N3 | 90.47 (7) |
C1—Ag1—N4i | 94.36 (8) | N2—Mn1—N3 | 90.12 (8) |
N1—C1—Ag1 | 167.4 (2) | C1—N1—Mn1iv | 164.15 (19) |
N2—C2—Ag1 | 170.2 (2) | C2—N2—Mn1 | 158.1 (2) |
Symmetry codes: (i) −x−1/2, y+1/2, −z+1/2; (ii) −x+1/2, y−1/2, −z−1/2; (iii) x+1/2, −y+5/2, z+1/2; (iv) −x+1/2, y+1/2, −z−1/2. |
Many of the bimetallic doubly interpenetrated three-dimensional coordination polymers of formula {M(L)2[Ag(CN)2]2} [M = Cd; L = 4,4'-bpy (Soma et al., 1994), M = Cd; L = dppn (Soma & Iwamoto, 1997), M = Fe; L = 4,4'-bpy, M = Fe; L = bpe (Niel et al., 2002), M = Mn; L = 4,4'-bpy (Dong et al., 2003), M = Cu; L = 4,4'-bpy (Maher & Sykora, 2007)] [4,4'-bpy = 4,4'-bipyridyl, dppn = 1,3-bis(4-pyridyl)-propane, bpe = trans-1,2-bis(4-pyridyl)-ethylene] were reported. In 2002, the spin-crossover behavior was reported in {Fe(4,4'-bpy)2[Ag(CN)2]2} at high pressure, and the spin-crossover phenomena with a large hysteresis loop at about 95 K was discovered in {Fe(bpe)2[Ag(CN)2]2} (Niel et al., 2002). We report herein the synthesis and crystal structure of a new bimetallic double interpenetrated three-dimensional coordination polymer of formula {Mn(edp)2[Ag(CN)2]2} (I) [edp = 1,2-bis(4-pyridyl)-ethane].
In the title compound, (I), Mn1 is located on an inversion center and each MnII is linked by four µ-[Ag(CN)2]-. Each [Ag(CN)2]- unit connects two manganese atoms defining the edges of a large {Mn4[Ag(CN)2]4} mesh. The Mn···Mn distance through the Mn—NC—Ag—CN—Mn edge is 9.958 Å, whereas the Mn···Mn separations through the diagonals of the mesh are 13.245 and 14.873 Å. The puckered meshwork structure extends across [1 0 - 1] plane of the cell to form a 2-D layer of molecular brick wall composed of MnII and [Ag(CN)2]- in a 1:2 ratio. A similar sheet structure was found for [Mn(SCN)2(C2H5OH)2] (McElearney et al., 1979; Defotis et al., 1990) and [Mn(dca)2(C2H5OH)2](CH3)2CO (Batten et al., 1999).
The MnII atom in the network coordinates to two edp lignads in a trans arrangement to attain the inversion center of a MnN6 octahedral coordination. The dihedral angle between the pyridine rings of the edp ligand is 82.4 (1)°. Different Mn—Ag meshworks are connected through the edp ligands to form the three-dimensional structure. AgI atom is three-coordinate, with two carbon atoms from CN- and one nitrogen atom from edp ligand, consequently, the C1—Ag1—C2 moiety is bent [C1—Ag1—C2 = 156.57 (9)°]. The crystal structure of (I) is the 3-D interpenetrating double framework formed from two three-dimensional molecules interpenetrating each other, similar to that of {M(4,4'-bpy)2[Ag(CN)2]2} [M = Cd (Soma et al., 1994), M = Fe (Niel et al., 2002), M = Mn (Dong et al., 2003), M = Cu (Maher & Sykora, 2007)] and {Fe(bpe)2[Ag(CN)2]2} (Niel et al., 2002).