Solid-state UV-MALDI mass spectrometric quantitation of fluroxypyr and triclopyr in soil
Ivanova, B.; Spiteller, M.; Environmental Geochemistry and Health  (2015) –; doi:10.1007/s10653-014-9673-9

data_1518473
_publ_section_title
;
 Solid-state UV-MALDI mass spectrometric quantitation of
 fluroxypyr and triclopyr in soil
;
_journal_name_full               'Environmental Geochemistry and Health'
_journal_paper_doi               10.1007/s10653-014-9673-9
_journal_year                    2015
_chemical_formula_moiety         '2(C6 H12 N2), 2(C4 H O4), C8 H O8'
_chemical_formula_sum            'C28 H27 N4 O16'
_chemical_formula_weight         675.54
_chemical_name_common
'2-pyrrolidin-1-yl-ethyl ammonium bis(hydrogensquarate)'
_chemical_name_systematic        ?
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.608(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.650(2)
_cell_length_b                   7.5376(10)
_cell_length_c                   22.793(3)
_cell_measurement_temperature    198(2)
_cell_volume                     3031.2(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker GIS'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker APEX2'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      198(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART X2S'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  'doubly curved silicon crystal'
_diffrn_radiation_source         'micro-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0221
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            13153
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         2.88
_exptl_absorpt_coefficient_mu    0.124
_exptl_absorpt_correction_T_max  0.9877
_exptl_absorpt_correction_T_min  0.9613
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.480
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1404
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.447
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.452
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         2665
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.452
_refine_ls_R_factor_all          0.0852
_refine_ls_R_factor_gt           0.0709
_refine_ls_shift/su_max          0.019
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1363P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2301
_refine_ls_wR_factor_ref         0.2439
_reflns_number_gt                2148
_reflns_number_total             2677
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            Struct-128-2.txt
_cod_data_source_block           bi128
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 2827 2014-09-09 07:05:25Z andrius 
;
_cod_original_cell_volume        3031.1(7)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1518473