

Supporting information
![]() | Crystallographic Information File (CIF) https://doi.org/10.1107/S2056989016014304/wm5318sup1.cif |
![]() | Structure factor file (CIF format) https://doi.org/10.1107/S2056989016014304/wm5318Isup2.hkl |
![]() | Text file https://doi.org/10.1107/S2056989016014304/wm5318sup3.txt |
CCDC reference: 1503478
Key indicators
- Single-crystal neutron study
- T = 10 K
- Mean
(C-C) = 0.003 Å
- R factor = 0.089
- wR factor = 0.246
- Data-to-parameter ratio = 28.5
checkCIF/PLATON results
No syntax errors found
Alert level A TYPE031_ALERT_1_A _diffrn_radiation_wavelength is not of type numb.
Author Response: Data was collected with polychromatic neutrons wavelength is given as a range rather than a number. |
CELL004_ALERT_1_A _cell_measurement_theta_min is missing Minimum theta of reflections used to measure unit cell. The following tests will not be performed. CELLT_01
Author Response: Test not relevant for polychromatic radiation, see _exptl_special_details. |
CELL005_ALERT_1_A _cell_measurement_theta_max is missing Maximum theta of reflections used to measure unit cell. The following tests will not be performed. CELLT_01
Author Response: Test not relevant for polychromatic radiation, see _exptl_special_details. |
TYPE036_ALERT_1_A _exptl_absorpt_coefficient_mu is not of type numb.
Author Response: Data was collected with polychromatic neutrons and so the absorption, being wavelength dependent, is given as a an expression rather than a number. |
PLAT184_ALERT_1_A Missing _cell_measurement_theta_min value ...... Please Do !
Author Response: Test not relevant for polychromatic neutrons, see _exptl_special_details for further information. |
PLAT185_ALERT_1_A Missing _cell_measurement_theta_max value ...... Please Do !
Author Response: Test not relevant for polychromatic neutrons, see _exptl_special_details for further information. |
Alert level B DIFMN02_ALERT_2_B The minimum difference density is < -0.1*ZMAX*1.00 _refine_diff_density_min given = -3.470 Test value = -3.000
Author Response: Value is in Fermi per cubic angstrom; test not relevant for polychromatic neutrons. |
DIFMX01_ALERT_2_B The maximum difference density is > 0.1*ZMAX*1.00 _refine_diff_density_max given = 3.197 Test value = 3.000
Author Response: Value is in Fermi per cubic angstrom; test not relevant for polychromatic neutrons. |
Alert level C CELLK01_ALERT_1_C Check that the cell measurement temperature is in Kelvin. Value of measurement temperature given = 10.000
Author Response: The measurement was made at 10 Kelvin. |
DIFMN03_ALERT_1_C The minimum difference density is < -0.1*ZMAX*0.75 The relevant atom site should be identified.
Author Response: Value is in Fermi per cubic angstrom; test not relevant for polychromatic neutrons. |
DIFMX02_ALERT_1_C The maximum difference density is > 0.1*ZMAX*0.75 The relevant atom site should be identified.
Author Response: Value is in Fermi per cubic angstrom; test not relevant for polychromatic neutrons. |
PLAT480_ALERT_4_C Long H...A H-Bond Reported H2A .. O2 .. 2.68 Ang.
Author Response: This is expected for a weak C-H...O bond, as discussed in the main text. |
PLAT480_ALERT_4_C Long H...A H-Bond Reported H2A .. O5 .. 2.72 Ang.
Author Response: This is expected for a weak C-H...O bond, as discussed in the main text. |
PLAT918_ALERT_3_C Reflection(s) with I(obs) much Smaller I(calc) . 4 Check
Author Response: Examination of the SHELX .LST file reveals that F(obs)^2^ and F(calc)^2^ for these reflections, (3 5 1), (1 -2 -2), (2 0 6) and ( 0 2 3) differ by between 5 and 8 times the measurement ESD, which is within the limit of acceptability for SXD data. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H2B -0.66 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H2N -1.06 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H3N -0.49 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H9A -0.74 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H10B -0.54 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT977_ALERT_2_C Check the Negative Difference Density on H11B -0.90 eA-3
Author Response: Test not relevant for polychromatic neutrons. |
PLAT978_ALERT_2_C Number C-C Bonds with Positive Residual Density 0 Note
Author Response: Test not relevant for polychromatic neutrons. |
Alert level G ABSMU01_ALERT_1_G Calculation of _exptl_absorpt_correction_mu not performed for this radiation type. PLAT003_ALERT_2_G Number of Uiso or Uij Restrained non-H Atoms ... 2 Report
Author Response: Light restraint applied to Uij of the zinc atoms using the SHELX ISOR command as described in the main text. |
PLAT072_ALERT_2_G SHELXL First Parameter in WGHT Unusually Large 0.14 Report
Author Response: Test not relevant for polychromatic neutrons. |
PLAT083_ALERT_2_G SHELXL Second Parameter in WGHT Unusually Large 36.25 Why ?
Author Response: Test not relevant for polychromatic neutrons. |
PLAT164_ALERT_4_G Nr. of Refined C-H H-Atoms in Heavy-Atom Struct. 2 Note
Author Response: This is entirely appropriate for a single crystal neutron refinement. |
PLAT186_ALERT_4_G The CIF-Embedded .res File Contains ISOR Records 1 Report
Author Response: Light restraints applied to Uij of both zinc atoms using the SHELX ISOR command as described in the main text. |
PLAT794_ALERT_5_G Tentative Bond Valency for Zn2 (II) ..... 2.12 Note
Author Response: Noted. The Zn-O bond lengths in both coordination polyhedra are normal. |
PLAT860_ALERT_3_G Number of Least-Squares Restraints ............. 12 Note
Author Response: These correspond to the twelve lightly-restrained Uij of the zinc atoms. |
PLAT871_ALERT_4_G Laue technique Related ALERTS are Suppressed ... ! Info PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 17744 Note PLAT933_ALERT_2_G Number of OMIT records in Embedded RES ......... 11 Note
Author Response: Outlying reflections were omitted; these typically occur near the edges of detectors and are thus poorly measured/integrated. |
PLAT958_ALERT_1_G Calculated (ThMax) and Actual (FCF) Lmax Differ 7 Units PLAT961_ALERT_5_G Dataset Contains no Negative Intensities ....... Please Check
6 ALERT level A = Most likely a serious problem - resolve or explain 2 ALERT level B = A potentially serious problem, consider carefully 13 ALERT level C = Check. Ensure it is not caused by an omission or oversight 13 ALERT level G = General information/check it is not something unexpected 11 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 13 ALERT type 2 Indicator that the structure model may be wrong or deficient 2 ALERT type 3 Indicator that the structure quality may be low 6 ALERT type 4 Improvement, methodology, query or suggestion 2 ALERT type 5 Informative message, check
Data collection: SXD2001 (Gutmann, 2005); cell refinement: SXD2001 (Gutmann, 2005); data reduction: SXD2001 (Gutmann, 2005); program(s) used to solve structure: SHELXT2014 (Sheldrick, 2015a; Gruene et al., 2014); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015b; Gruene et al., 2014); molecular graphics: DIAMOND (Putz & Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
[Zn(H2O)6][Zn(C2H5NO2)2(H2O)4](SO4)2 | Z = 1 |
Mr = 653.20 | F(000) = 336 |
Triclinic, P1 | Dx = 2.086 Mg m−3 |
a = 5.9601 (15) Å | Neutron radiation, λ = 0.48-7.0 Å |
b = 6.7670 (17) Å | Cell parameters from 550 reflections |
c = 13.112 (4) Å | µ = 5.02 + 0.0182 * λ mm−1 |
α = 84.955 (18)° | T = 10 K |
β = 83.25 (2)° | Tabular, colourless |
γ = 83.042 (19)° | 4 × 2.5 × 1 mm |
V = 519.8 (2) Å3 |
SXD diffractometer | 8296 reflections with I > 2σ(I) |
Radiation source: ISIS neutron spallation source | Rint = 0.089 |
time–of–flight LAUE diffraction scans | θmax = 87.4°, θmin = 8.2° |
Absorption correction: numerical The linear absorption coefficient is wavelength dependent and is calculated as: µ = 5.0165 + 0.0182 * λ [cm-1] as determined by Gaussian integration in SXD2001 (Gutmann, 2005) | h = −15→15 |
k = −18→16 | |
8296 measured reflections | l = −28→29 |
8296 independent reflections |
Refinement on F2 | Hydrogen site location: difference Fourier map |
Least-squares matrix: full | All H-atom parameters refined |
R[F2 > 2σ(F2)] = 0.089 | w = 1/[σ2(Fo2) + (0.1376P)2 + 36.2519P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.246 | (Δ/σ)max < 0.001 |
S = 1.09 | Δρmax = 3.20 e Å−3 |
8296 reflections | Δρmin = −3.47 e Å−3 |
291 parameters | Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
12 restraints | Extinction coefficient: 0.0386 (18) |
Experimental. For peak integration a local UB matrix refined for each frame, using approximately 50 reflections from each of the 11 detectors. Hence _cell_measurement_reflns_used 550 For final cell dimensions a weighted average of all local cells was calculated Because of the nature of the experiment, it is not possible to give values of theta_min and theta_max for the cell determination. The same applies for the wavelength used for the experiment. The range of wavelengths used was 0.48–7.0 Angstroms, BUT the bulk of the diffraction information is obtained from wavelengths in the range 0.7–2.5 Angstroms. The data collection procedures on the SXD instrument used for the single-crystal neutron data collection are most recently summarized in the Appendix to the following paper Wilson, C.C. (1997). J. Mol. Struct. 405, 207–217 |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. The variable wavelength nature of the data collection procedure means that sensible values of _diffrn_reflns_theta_min & _diffrn_reflns_theta_max cannot be given instead the following limits are given _diffrn_reflns_sin(theta)/lambda_min 0.06 _diffrn_reflns_sin(theta)/lambda_max 1.38 _refine_diff_density_max/min is given in Fermi per angstrom cubed not electons per angstrom cubed. Another way to consider the _refine_diff_density_ is as a percentage of the scattering density of a given atom: _refine_diff_density_max = 5.7 % of hydrogen _refine_diff_density_min = -6.1 % of hydrogen 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 | ||
S1 | 0.0141 (6) | 0.9128 (6) | 0.1847 (4) | 0.0008 (6) | |
O1 | 0.1809 (4) | 1.0196 (3) | 0.1159 (2) | 0.0036 (4) | |
O2 | −0.0249 (4) | 0.7303 (3) | 0.1375 (2) | 0.0037 (4) | |
O3 | −0.2027 (4) | 1.0416 (3) | 0.2010 (2) | 0.0040 (4) | |
O4 | 0.1050 (4) | 0.8522 (4) | 0.2845 (2) | 0.0038 (3) | |
Zn1 | 0.5000 | 0.0000 | 0.5000 | 0.0017 (4) | |
O5 | 0.1954 (4) | 0.1618 (4) | 0.5392 (2) | 0.0049 (4) | |
H5A | 0.0913 (11) | 0.1389 (11) | 0.6009 (6) | 0.0198 (11) | |
H5B | 0.0998 (10) | 0.2109 (9) | 0.4826 (6) | 0.0170 (10) | |
O6 | 0.4360 (4) | 0.0464 (4) | 0.3456 (2) | 0.0043 (4) | |
H6A | 0.5654 (10) | 0.0305 (9) | 0.2922 (5) | 0.0162 (10) | |
H6B | 0.3082 (10) | −0.0116 (10) | 0.3229 (6) | 0.0179 (11) | |
O7 | 0.6512 (4) | 0.2793 (4) | 0.4768 (2) | 0.0037 (3) | |
O8 | 0.9812 (4) | 0.3195 (4) | 0.3809 (2) | 0.0060 (4) | |
N1 | 0.3991 (2) | 0.5025 (2) | 0.34432 (14) | 0.0044 (2) | |
H1N | 0.3634 (11) | 0.5559 (12) | 0.4165 (6) | 0.0218 (13) | |
H2N | 0.3159 (12) | 0.6073 (10) | 0.2963 (7) | 0.0212 (12) | |
H3N | 0.3294 (11) | 0.3719 (9) | 0.3435 (6) | 0.0199 (12) | |
C1 | 0.7711 (3) | 0.3465 (3) | 0.39746 (19) | 0.0029 (3) | |
C2 | 0.6484 (3) | 0.4781 (3) | 0.3163 (2) | 0.0041 (3) | |
H2A | 0.7111 (11) | 0.6233 (9) | 0.3086 (7) | 0.0220 (13) | |
H2B | 0.6871 (11) | 0.4134 (12) | 0.2420 (6) | 0.0222 (13) | |
Zn2 | 0.5000 | 0.5000 | 0.0000 | 0.0008 (3) | |
O9 | 0.2958 (4) | 0.3897 (3) | 0.1320 (2) | 0.0045 (4) | |
H9A | 0.2434 (11) | 0.2593 (8) | 0.1279 (6) | 0.0175 (11) | |
H9B | 0.1606 (10) | 0.4824 (9) | 0.1443 (6) | 0.0190 (11) | |
O10 | 0.7911 (4) | 0.3443 (4) | 0.0509 (2) | 0.0048 (4) | |
H10A | 0.7828 (12) | 0.2322 (9) | 0.1030 (6) | 0.0180 (10) | |
H10B | 0.8989 (11) | 0.2959 (10) | −0.0061 (6) | 0.0197 (11) | |
O11 | 0.5434 (4) | 0.7298 (4) | 0.0881 (2) | 0.0054 (4) | |
H11A | 0.6938 (9) | 0.7484 (9) | 0.1036 (6) | 0.0182 (11) | |
H11B | 0.4422 (10) | 0.8523 (8) | 0.0915 (7) | 0.0200 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0006 (10) | 0.0009 (11) | 0.0010 (18) | 0.0001 (8) | −0.0003 (9) | 0.0000 (11) |
O1 | 0.0027 (6) | 0.0037 (7) | 0.0038 (10) | −0.0006 (5) | 0.0016 (5) | 0.0001 (7) |
O2 | 0.0029 (6) | 0.0028 (6) | 0.0058 (11) | −0.0007 (5) | −0.0007 (6) | −0.0012 (7) |
O3 | 0.0017 (6) | 0.0040 (7) | 0.0053 (11) | 0.0018 (5) | 0.0010 (6) | 0.0000 (7) |
O4 | 0.0039 (6) | 0.0054 (7) | 0.0018 (10) | 0.0001 (5) | −0.0015 (6) | 0.0011 (7) |
Zn1 | 0.0015 (4) | 0.0017 (4) | 0.0017 (5) | −0.0001 (3) | −0.0001 (3) | 0.0000 (3) |
O5 | 0.0036 (7) | 0.0071 (8) | 0.0032 (11) | 0.0014 (5) | −0.0002 (6) | 0.0011 (7) |
H5A | 0.015 (2) | 0.028 (3) | 0.014 (3) | −0.0027 (18) | 0.0046 (18) | 0.002 (2) |
H5B | 0.015 (2) | 0.019 (2) | 0.016 (3) | 0.0017 (15) | −0.0065 (17) | 0.004 (2) |
O6 | 0.0041 (7) | 0.0064 (7) | 0.0021 (11) | −0.0005 (5) | −0.0004 (6) | 0.0002 (7) |
H6A | 0.0142 (18) | 0.021 (2) | 0.013 (3) | −0.0020 (15) | 0.0034 (16) | −0.005 (2) |
H6B | 0.017 (2) | 0.023 (2) | 0.017 (3) | −0.0076 (17) | −0.0052 (18) | −0.005 (2) |
O7 | 0.0042 (6) | 0.0041 (7) | 0.0026 (10) | −0.0011 (5) | −0.0004 (6) | 0.0014 (7) |
O8 | 0.0028 (7) | 0.0091 (9) | 0.0050 (12) | 0.0008 (5) | 0.0001 (6) | 0.0022 (8) |
N1 | 0.0030 (4) | 0.0057 (5) | 0.0041 (7) | 0.0012 (3) | −0.0013 (4) | 0.0004 (5) |
H1N | 0.017 (2) | 0.033 (3) | 0.015 (3) | 0.002 (2) | 0.0004 (19) | −0.009 (3) |
H2N | 0.019 (2) | 0.020 (2) | 0.025 (4) | 0.0015 (18) | −0.011 (2) | 0.006 (2) |
H3N | 0.018 (2) | 0.015 (2) | 0.027 (4) | −0.0066 (16) | −0.001 (2) | 0.001 (2) |
C1 | 0.0020 (5) | 0.0034 (6) | 0.0032 (9) | 0.0000 (4) | −0.0011 (5) | 0.0007 (6) |
C2 | 0.0042 (6) | 0.0047 (6) | 0.0030 (9) | −0.0002 (4) | −0.0004 (5) | 0.0017 (6) |
H2A | 0.020 (2) | 0.013 (2) | 0.033 (4) | −0.0078 (17) | −0.005 (2) | 0.007 (2) |
H2B | 0.018 (2) | 0.035 (3) | 0.013 (3) | 0.007 (2) | −0.0031 (19) | −0.006 (3) |
Zn2 | 0.0008 (4) | 0.0008 (4) | 0.0009 (5) | −0.0001 (3) | −0.0001 (3) | 0.0001 (3) |
O9 | 0.0045 (7) | 0.0035 (7) | 0.0050 (11) | −0.0005 (5) | 0.0005 (6) | 0.0004 (7) |
H9A | 0.021 (2) | 0.0115 (17) | 0.021 (3) | −0.0064 (15) | −0.001 (2) | −0.001 (2) |
H9B | 0.0135 (19) | 0.016 (2) | 0.024 (4) | 0.0064 (14) | 0.0009 (18) | −0.001 (2) |
O10 | 0.0039 (7) | 0.0047 (7) | 0.0050 (11) | 0.0019 (5) | −0.0012 (6) | 0.0010 (7) |
H10A | 0.024 (3) | 0.015 (2) | 0.013 (3) | 0.0011 (17) | 0.0002 (19) | 0.0054 (19) |
H10B | 0.020 (2) | 0.020 (2) | 0.016 (3) | 0.0065 (17) | 0.0040 (19) | −0.002 (2) |
O11 | 0.0033 (6) | 0.0048 (7) | 0.0086 (12) | 0.0002 (5) | −0.0015 (6) | −0.0033 (8) |
H11A | 0.0091 (16) | 0.022 (2) | 0.025 (3) | −0.0030 (15) | −0.0057 (17) | −0.004 (2) |
H11B | 0.017 (2) | 0.0118 (18) | 0.031 (4) | 0.0059 (14) | −0.003 (2) | −0.006 (2) |
S1—O3 | 1.473 (4) | N1—H1N | 1.033 (7) |
S1—O1 | 1.474 (5) | N1—C2 | 1.481 (2) |
S1—O4 | 1.480 (6) | C1—C2 | 1.523 (4) |
S1—O2 | 1.484 (4) | C2—H2A | 1.085 (6) |
Zn1—O5 | 2.039 (2) | C2—H2B | 1.091 (7) |
Zn1—O5i | 2.039 (2) | Zn2—O10 | 2.067 (3) |
Zn1—O6 | 2.093 (3) | Zn2—O10ii | 2.067 (3) |
Zn1—O6i | 2.094 (3) | Zn2—O11ii | 2.075 (2) |
Zn1—O7i | 2.173 (2) | Zn2—O11 | 2.075 (2) |
Zn1—O7 | 2.173 (2) | Zn2—O9 | 2.129 (3) |
O5—H5A | 0.973 (7) | Zn2—O9ii | 2.129 (3) |
O5—H5B | 0.997 (7) | O9—H9B | 0.966 (6) |
O6—H6A | 0.981 (6) | O9—H9A | 0.979 (5) |
O6—H6B | 0.985 (6) | O10—H10A | 0.977 (8) |
O7—C1 | 1.272 (4) | O10—H10B | 0.979 (6) |
O8—C1 | 1.240 (3) | O11—H11B | 0.966 (6) |
N1—H3N | 1.022 (6) | O11—H11A | 0.966 (6) |
N1—H2N | 1.027 (8) | ||
O3—S1—O1 | 110.2 (3) | O8—C1—O7 | 126.0 (3) |
O3—S1—O4 | 110.1 (3) | O8—C1—C2 | 116.2 (2) |
O1—S1—O4 | 109.5 (3) | O7—C1—C2 | 117.7 (2) |
O3—S1—O2 | 109.3 (3) | H2A—C2—H2B | 107.9 (7) |
O1—S1—O2 | 109.3 (3) | H2A—C2—N1 | 109.5 (4) |
O4—S1—O2 | 108.4 (3) | H2B—C2—N1 | 109.5 (4) |
O5—Zn1—O5i | 180.0 | H2A—C2—C1 | 108.5 (5) |
O5—Zn1—O6 | 88.59 (11) | H2B—C2—C1 | 109.7 (4) |
O5i—Zn1—O6 | 91.41 (11) | O10—Zn2—O10ii | 180.0 |
O5—Zn1—O6i | 91.41 (11) | O10—Zn2—O11ii | 91.57 (10) |
O5i—Zn1—O6i | 88.59 (11) | O10ii—Zn2—O11ii | 88.43 (10) |
O6—Zn1—O6i | 180.0 | O10—Zn2—O11 | 88.43 (10) |
O5—Zn1—O7i | 92.01 (9) | O10ii—Zn2—O11 | 91.57 (10) |
O5i—Zn1—O7i | 87.99 (9) | O11ii—Zn2—O11 | 180.0 |
O6—Zn1—O7i | 93.38 (10) | O10—Zn2—O9 | 91.52 (11) |
O6i—Zn1—O7i | 86.62 (10) | O10ii—Zn2—O9 | 88.48 (11) |
O5—Zn1—O7 | 87.99 (9) | O11ii—Zn2—O9 | 94.16 (10) |
O5i—Zn1—O7 | 92.01 (9) | O11—Zn2—O9 | 85.84 (10) |
O6—Zn1—O7 | 86.62 (10) | O10—Zn2—O9ii | 88.48 (11) |
O6i—Zn1—O7 | 93.38 (10) | O10ii—Zn2—O9ii | 91.52 (11) |
O7i—Zn1—O7 | 180.0 | O11ii—Zn2—O9ii | 85.84 (10) |
H5A—O5—H5B | 106.7 (6) | O11—Zn2—O9ii | 94.16 (10) |
H6A—O6—H6B | 108.1 (6) | O9—Zn2—O9ii | 180.00 (12) |
C1—O7—Zn1 | 128.26 (18) | H9B—O9—H9A | 106.2 (6) |
H3N—N1—H2N | 107.6 (6) | H10A—O10—H10B | 106.1 (6) |
H3N—N1—H1N | 109.8 (7) | H11B—O11—H11A | 111.4 (6) |
H2N—N1—H1N | 105.0 (6) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+1, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···O4iii | 0.973 (7) | 1.793 (7) | 2.755 (4) | 169.0 (7) |
O5—H5B···O8iv | 0.997 (7) | 1.656 (8) | 2.642 (4) | 168.9 (6) |
O6—H6A···O3v | 0.981 (6) | 1.722 (6) | 2.696 (3) | 170.8 (5) |
O6—H6B···O4vi | 0.985 (6) | 1.751 (5) | 2.729 (3) | 171.8 (7) |
O9—H9A···O1vi | 0.979 (5) | 1.732 (5) | 2.707 (3) | 173.8 (6) |
O9—H9B···O2 | 0.966 (6) | 1.895 (6) | 2.811 (3) | 157.2 (6) |
O10—H10A···O3v | 0.977 (8) | 1.740 (8) | 2.713 (4) | 173.0 (7) |
O10—H10B···O2ii | 0.979 (6) | 1.811 (7) | 2.745 (4) | 158.5 (7) |
O11—H11A···O2vii | 0.966 (6) | 1.772 (6) | 2.726 (3) | 168.6 (6) |
O11—H11B···O1 | 0.966 (6) | 1.824 (6) | 2.750 (3) | 159.5 (7) |
C2—H2A···O2vii | 1.085 (6) | 2.682 (9) | 3.351 (4) | 119.4 (6) |
C2—H2A···O5viii | 1.085 (6) | 2.716 (8) | 3.489 (3) | 127.9 (6) |
C2—H2B···O10 | 1.091 (7) | 2.579 (8) | 3.649 (4) | 166.7 (7) |
N1—H1N···O7viii | 1.033 (7) | 1.853 (7) | 2.848 (3) | 160.8 (7) |
N1—H2N···O4 | 1.027 (8) | 1.961 (7) | 2.877 (3) | 147.0 (7) |
N1—H3N···O6 | 1.022 (6) | 2.216 (7) | 3.066 (3) | 139.5 (5) |
Symmetry codes: (ii) −x+1, −y+1, −z; (iii) −x, −y+1, −z+1; (iv) x−1, y, z; (v) x+1, y−1, z; (vi) x, y−1, z; (vii) x+1, y, z; (viii) −x+1, −y+1, −z+1. |
The distortion index and quadratic elongation are dimensionless, whereas the bond-angle variance is in units of degrees squared. |
This work | Balamurugan et al. (2011) | Tepavitcharova et al. (2012) | Oguey et al. (2013c) | |
Single-crystal neutron | Single-crystal X-ray | Single-crystal X-ray | Single-crystal X-ray | |
T = 10 K | T = 293 K | T = 150 K | T = 153 K | |
S—O1* | 1.474 (5) | 1.472 (2) | 1.472 (1) | 1.473 (2) |
S—O2 | 1.484 (4) | 1.478 (2) | 1.482 (1) | 1.485 (2) |
S—O3* | 1.473 (4) | 1.472 (2) | 1.477 (1) | 1.481 (2) |
S—O4 | 1.480 (5) | 1.481 (2) | 1.484 (1) | 1.479 (2) |
Mean S—O | 1.478 | 1.476 | 1.479 | 1.479 |
SO4 volume | 1.656 | 1.649 | 1.659 | 1.661 |
Distortion index | 0.0028 | 0.0025 | 0.0027 | 0.0022 |
Quadratic elongation | 1.000 | 1.000 | 1.000 | 1.000 |
Bond-angle variance | 0.410 | 0.268 | 0.320 | 0.420 |
Zn1—O5 | 2.039 (2) | 2.024 (3) | 2.032 (1) | 2.035 (2) |
Zn1—O6 | 2.093 (2) | 2.101 (3) | 2.098 (1) | 2.098 (2) |
Zn1—O7† | 2.173 (2) | 2.181 (3) | 2.177 (1) | 2.176 (2) |
Mean Zn1—O | 2.102 | 2.102 | 2.102 | 2.103 |
ZnO6 volume | 12.338 | 12.339 | 12.339 | 12.336 |
Distortion index | 0.0227 | 0.0251 | 0.0238 | 0.0232 |
Quadratic elongation | 1.003 | 1.003 | 1.003 | 1.003 |
Bond-angle variance | 6.308 | 4.815 | 5.975 | 6.292 |
Zn2—O9 | 2.129 (3) | 2.141 (3) | 2.133 (1) | 2.135 (2) |
Zn2—O10 | 2.067 (3) | 2.071 (3) | 2.070 (1) | 2.072 (2) |
Zn2—O11 | 2.075 (2) | 2.063 (3) | 2.065 (2) | 2.065 (2) |
Mean Zn2—O | 2.090 | 2.092 | 2.089 | 2.091 |
ZnO6 volume | 12.127 | 12.176 | 12.123 | 12.145 |
Distortion index | 0.0124 | 0.0156 | 0.0139 | 0.0142 |
Quadratic elongation | 1.003 | 1.002 | 1.002 | 1.002 |
Bond-angle variance | 7.982 | 5.942 | 6.617 | 6.541 |
C1—O7 | 1.272 (4) | 1.272 (5) | 1.274 (2) | 1.278 (3) |
C1—O8 | 1.240 (3) | 1.228 (5) | 1.236 (2) | 1.234 (3) |
C1—C2 | 1.523 (4) | 1.516 (5) | 1.525 (3) | 1.522 (3) |
C2—N1 | 1.481 (2) | 1.478 (5) | 1.480 (2) | 1.480 (3) |
*Denotes sulfate oxygens accepting two hydrogen bonds instead of three. †Denotes carboxylate oxygen ligand instead of water oxygen. |
Element symbols indicate the cation in each compound. `X-ray' denotes single-crystal X-ray diffraction; `NPD' denotes a neutron powder diffraction experiment on a deuterated analogue carried out at 10 K; `neutron' indicates single-crystal neutron diffraction on a protonated analogue carried out at 10 K. Note that the atom symbols employed in our work are the same as those used by Elayaraja et al. (2007) and by Howard et al. (2016). Although other authors have used different atom labels – and indeed use them inconsistently in their own reports – we list equivalent contacts in this table. |
Mg, X-ray(a) | Mg, NPD(b) | Co, X-ray(c) | Mg, X-ray(c) | Zn, X-ray(c) | Zn, X-ray(d) | Zn, X-ray(e) | Zn, neutron(f) | |
N—H1N | 0.87 (4) | 1.008 (4) | 0.847 (1) | 0.849 (1) | 0.881 (2) | 0.85 (2) | 0.910 (2) | 1.033 (7) |
N—H2N | 0.87 (4) | 0.982 (4) | 0.907 (1) | 0.898 (1) | 0.904 (1) | 0.83 (3) | 0.911 (2) | 1.028 (8) |
N—H3N | 0.87 (5) | 0.991 (5) | 0.904 (1) | 0.902 (1) | 0.946 (1) | absent | 0.910 (2) | 1.022 (6) |
Average N—H | 0.87 | 0.995 | 0.877 | 0.874 | 0.892 | 0.84 | 0.911 | 1.030 |
C—H2A | 0.970 (4) | 1.077 (4) | 0.961 (1) | 0.960 (1) | 0.967 (2) | 0.970 (3) | 0.990 (2) | 1.085 (6) |
C—H2B | 0.970 (3) | 1.083 (4) | 0.901 (1) | 1.014 (1) | 1.050 (2) | 0.970 (3) | 0.990 (2) | 1.091 (7) |
Average C—H | 0.970 | 1.080 | 0.931 | 0.987 | 1.009 | 0.970 | 0.990 | 1.088 |
O5—H5A | 0.84 (3) | 0.975 (5) | 0.880 (1) | 0.789 (1) | 0.879 (2) | 0.85 (2) | 0.83 (3) | 0.973 (7) |
O5—H5B | 0.85 (3) | 0.946 (5) | 0.914 (1) | 0.930 (1) | 0.838 (1) | 0.85 (3) | 0.85 (3) | 0.997 (7) |
O6—H6A | 0.84 (2) | 0.987 (5) | 0.964 (1) | 0.875 (1) | 0.864 (1) | 0.83 (3) | 0.86 (3) | 0.981 (6) |
O6—H6B | 0.83 (3) | 0.988 (5) | 0.906 (1) | 0.897 (1) | 0.886 (1) | 0.84 (3) | 0.85 (2) | 0.985 (6) |
O9—H9A | 0.83 (2) | 0.977 (5) | 0.864 (1) | 0.871 (1) | 0.881 (2) | 0.87 (3) | 0.86 (2) | 0.979 (5) |
O9—H9b | 0.84 (2) | 0.984 (4) | 0.884 (1) | 0.901 (1) | 0.964 (1) | 0.87 (2) | 0.87 (3) | 0.966 (6) |
O10—H10A | 0.84 (4) | 0.954 (5) | 0.972 (1) | 0.911 (1) | 0.887 (1) | 0.82 (2) | 0.87 (2) | 0.977 (8) |
O10—H10B | 0.84 (3) | 0.972 (5) | 0.855 (1) | 0.821 (1) | 0.913 (1) | 0.84 (2) | 0.85 (2) | 0.978 (6) |
O11—H11A | 0.84 (3) | 1.002 (5) | 0.822 (1) | 0.884 (1) | 0.808 (1) | 0.83 (3) | 0.86 (2) | 0.966 (6) |
O11—H11B | 0.83 (3) | 0.965 (5) | 0.906 (1) | 0.859 (1) | 0.900 (1) | 0.84 (2) | 0.84 (2) | 0.966 (6) |
Average O—H | 0.84 | 0.975 | 0.897 | 0.874 | 0.882 | 0.85 | 0.85 | 0.977 |
(a) Elayaraja et al. (2007); (b) Howard et al. (2016); (c) Tepavitcharova et al. (2012); (d) Balamurugan et al. (2011); (e) Oguey et al. (2013c); (f) this work. |
Meaning of symbols: ν = stretch; δ = deformation; ρ = rock; ω = wag; Γ = twist; (A) = asymmetric; (S) = symmetric. |
α-Glycinea | Glyc·MgSO4·5H2Oa | Glyc·ZnSO4·5H2O | |
Vibrational mode | 180 s, 18 mW | 1400 s, 18 mW | 540 s, 18 mW |
δ M2+—O (?) | – | 208 | 203 |
– | 236 | 220 | |
δ CCN+ | 356 | 361 | 382 |
ρ COO- | |||
δ(S) SO42- | – | 453 | 451 |
ρ COO- | 497 | 522 | 527 |
ω COO- | 601 | 597 | 582 |
599 | |||
δ(A) SO42- | 623 | 626 | |
645 | 644 | ||
δ COO- | 696 | – | – |
unknown | – | 794 | – |
ν C—C+ | 893 | 890 | 890 |
ν C—N | 905 | 906 | |
ν C—O | |||
ρ CH2 | 922 | – | – |
ν(S) SO42- | – | 983.8 | 983.2 |
ν C—N | 1036 | 1020 | 1021 |
ν(A) SO42- | – | 1077 | 1078 |
1100 | 1101 | ||
ρ NH3+ | 1108 | 1139 | 1141 |
1140 | |||
ω CH2 | 1325 | 1305 | 1306 |
Γ CH2 | 1328 | 1327 | |
ν(S) COO- | 1410 | 1395 | 1391 |
δ(S) CH2 | 1441 | 1434 | 1433 |
1457 | |||
δ(A) NH3+ | 1502 | ||
δ(S) NH3+ | 1516 | 1488 | 1488 |
1569 | |||
ν C—C+ | 1634 | 1597 | 1590 |
ω CH2 | |||
ν(A) COO- | 1670 | 1631 | 1614 |
ν(S) CH2 | 2972 | 2997 | 2996 |
ν(A) CH2 | 3009 | 3038 | 3037 |
ν(S) NH3+ | 3143 | – | – |
ν(S) H2O | – | 3248 | 3204 |
3233 | |||
ν(A) H2O | – | 3384 | 3331 |
3405 |
aHoward et al. (2016). |