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In the title compound, [Ag(NH3)2]2[Pt(C2O4)2], the Ag atom is coordinated in an almost linear configuration by two N atoms from two ammine ligands. The Pt atom, located on an inversion centre, is tetra­coordinated by four O atoms from two oxalate ions. The silver cations and platinum-centred anions are each stacked separately in a columnar fashion along the a axis. In the crystal structure, the cations and anions are further linked together through N—H...O hydrogen bonds, forming a three-dimensional structure.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S160053680601470X/sa2001sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S160053680601470X/sa2001Isup2.hkl
Contains datablock I

CCDC reference: 608479

Key indicators

  • Single-crystal X-ray study
  • T = 120 K
  • Mean [sigma](C-C) = 0.008 Å
  • R factor = 0.024
  • wR factor = 0.062
  • Data-to-parameter ratio = 12.5

checkCIF/PLATON results

No syntax errors found



Alert level C PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ .... ? PLAT062_ALERT_4_C Rescale T(min) & T(max) by ..................... 0.74 PLAT369_ALERT_2_C Long C(sp2)-C(sp2) Bond C1 - C2_a ... 1.54 Ang.
Alert level G ABSTM02_ALERT_3_G When printed, the submitted absorption T values will be replaced by the scaled T values. Since the ratio of scaled T's is identical to the ratio of reported T values, the scaling does not imply a change to the absorption corrections used in the study. Ratio of Tmax expected/reported 0.740 Tmax scaled 0.250 Tmin scaled 0.061
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 3 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion

Computing details top

Data collection: SMART (Bruker, 1998); cell refinement: SMART; data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997a); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997a); molecular graphics: SHELXTL (Sheldrick, 1997b); software used to prepare material for publication: SHELXTL.

Bis[diamminesilver(I)] dioxalatoplatinate(II) top
Crystal data top
[Ag(NH3)2]2·[Pt(C2O4)2]F(000) = 600
Mr = 655.01Dx = 3.376 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 929 reflections
a = 3.5857 (11) Åθ = 2.2–19.9°
b = 9.014 (3) ŵ = 13.88 mm1
c = 19.936 (6) ÅT = 120 K
β = 90.284 (5)°Needle, yellow
V = 644.4 (4) Å30.36 × 0.12 × 0.10 mm
Z = 2
Data collection top
Bruker SMART CCD area-detector
diffractometer
1135 independent reflections
Radiation source: fine-focus sealed tube1082 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.050
φ and ω scansθmax = 25.0°, θmin = 2.0°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 44
Tmin = 0.082, Tmax = 0.338k = 1010
3232 measured reflectionsl = 2318
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.024H-atom parameters constrained
wR(F2) = 0.062 w = 1/[σ2(Fo2) + (0.0351P)2 + 1.6017P]
where P = (Fo2 + 2Fc2)/3
S = 1.09(Δ/σ)max = 0.001
1135 reflectionsΔρmax = 1.83 e Å3
91 parametersΔρmin = 1.02 e Å3
0 restraintsExtinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0040 (5)
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Ag0.83142 (12)0.76654 (5)0.83595 (2)0.02382 (18)
C10.0717 (15)0.2574 (6)0.4141 (3)0.0194 (12)
C20.1832 (14)0.6057 (6)0.6279 (3)0.0169 (11)
N10.6835 (13)0.8792 (5)0.7464 (2)0.0237 (10)
H1A0.52440.82190.72190.036*
H1B0.89240.89770.72210.036*
H1C0.57000.96650.75680.036*
N20.9357 (13)0.6307 (6)0.9208 (2)0.0283 (11)
H2A0.72470.62360.94580.042*
H2B1.12130.67150.94610.042*
H2C1.00590.53860.90700.042*
O10.0473 (11)0.2850 (4)0.4745 (2)0.0205 (8)
O20.0907 (11)0.1328 (4)0.38936 (19)0.0243 (9)
O30.1518 (12)0.4792 (4)0.5971 (2)0.0192 (9)
O40.2910 (11)0.6198 (4)0.68547 (18)0.0234 (9)
Pt0.00000.50000.50000.01440 (16)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Ag0.0280 (3)0.0201 (3)0.0233 (3)0.00046 (18)0.00222 (18)0.00245 (16)
C10.022 (3)0.016 (3)0.020 (3)0.001 (2)0.001 (2)0.002 (2)
C20.016 (2)0.016 (3)0.019 (3)0.001 (2)0.002 (2)0.002 (2)
N10.021 (2)0.030 (3)0.021 (2)0.001 (2)0.0002 (19)0.001 (2)
N20.022 (2)0.033 (3)0.029 (3)0.001 (2)0.003 (2)0.005 (2)
O10.030 (2)0.0125 (19)0.019 (2)0.0019 (16)0.0058 (15)0.0002 (15)
O20.035 (2)0.017 (2)0.021 (2)0.0025 (17)0.0017 (17)0.0022 (16)
O30.027 (2)0.0134 (19)0.017 (2)0.0015 (15)0.0009 (17)0.0027 (14)
O40.030 (2)0.021 (2)0.019 (2)0.0001 (17)0.0058 (16)0.0002 (15)
Pt0.0180 (2)0.0122 (2)0.0130 (2)0.00024 (9)0.00120 (12)0.00097 (9)
Geometric parameters (Å, º) top
Ag—N12.119 (5)N1—H1B0.9100
Ag—N22.121 (5)N1—H1C0.9100
C1—O21.228 (7)N2—H2A0.9100
C1—O11.300 (7)N2—H2B0.9100
C1—C2i1.543 (7)N2—H2C0.9100
C2—O41.215 (7)O1—Pt2.011 (4)
C2—O31.301 (7)O3—Pt2.017 (4)
C2—C1i1.543 (7)Pt—O1i2.011 (4)
N1—H1A0.9100Pt—O3i2.017 (4)
N1—Ag—N2172.5 (2)Ag—N2—H2B109.5
O2—C1—O1124.3 (5)H2A—N2—H2B109.5
O2—C1—C2i120.0 (5)Ag—N2—H2C109.5
O1—C1—C2i115.6 (4)H2A—N2—H2C109.5
O4—C2—O3124.4 (5)H2B—N2—H2C109.5
O4—C2—C1i120.6 (5)C1—O1—Pt113.0 (3)
O3—C2—C1i115.0 (5)C2—O3—Pt113.2 (3)
Ag—N1—H1A109.5O1—Pt—O1i180.0
Ag—N1—H1B109.5O1—Pt—O397.47 (15)
H1A—N1—H1B109.5O1i—Pt—O382.53 (15)
Ag—N1—H1C109.5O1—Pt—O3i82.53 (15)
H1A—N1—H1C109.5O1i—Pt—O3i97.47 (15)
H1B—N1—H1C109.5O3—Pt—O3i180.0
Ag—N2—H2A109.5
O2—C1—O1—Pt175.4 (5)C1—O1—Pt—O3173.3 (4)
C2i—C1—O1—Pt6.2 (6)C1—O1—Pt—O3i6.7 (4)
O4—C2—O3—Pt175.8 (4)C2—O3—Pt—O1174.1 (4)
C1i—C2—O3—Pt4.2 (6)C2—O3—Pt—O1i5.9 (4)
Symmetry code: (i) x, y+1, z+1.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H2C···O2ii0.912.152.988 (7)153
N2—H2B···O1iii0.912.223.112 (6)165
N2—H2A···O1iv0.912.373.053 (7)132
N1—H1C···O4iv0.912.223.077 (6)157
N1—H1B···O2v0.912.353.084 (6)137
N1—H1A···O40.912.132.985 (6)156
Symmetry codes: (ii) x+3/2, y+1/2, z+1/2; (iii) x+3/2, y+1/2, z+3/2; (iv) x+1/2, y+1/2, z+3/2; (v) x+1, y+1, z+1.
 

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