A Cu(ii) complex of an imidazolium-based ionic liquid: synthesis, X-ray structure and application in the selective electrochemical sensing of guanine.
Singh, Amanpreet; Singh, Ajnesh; Singh, Narinder; Dalton transactions (Cambridge, England : 2003) 43 (2014) 16283–16288; doi:10.1039/c4dt01759e

data_7031914
_publ_section_title
;
 A Cu(ii) complex of an imidazolium-based ionic liquid: synthesis, X-ray
 structure and application in the selective electrochemical sensing of
 guanine.
;
_journal_issue                   43
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              16283
_journal_page_last               16288
_journal_paper_doi               10.1039/c4dt01759e
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C24 H36 Cu2 N8 O10, 4(Cl O4), 4(H2O)'
_chemical_formula_sum            'C24 H40 Cl4 Cu2 N8 O30'
_chemical_formula_weight         1185.47
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           58
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2 2n'
_symmetry_space_group_name_H-M   'P n n m'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.9191(5)
_cell_length_b                   14.6740(6)
_cell_length_c                   11.9279(4)
_cell_measurement_reflns_used    4213
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      2.71
_cell_volume                     2261.23(15)
_computing_cell_refinement       'APEX2 (Bruker, 2010); SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2010)'
_computing_data_reduction        'SAINT (Bruker, 2009);XPREP(Sheldrick,2008)'
_computing_molecular_graphics    'XP (Siemens)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008), OLEX2 (2009)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON 100 CMOS'
_diffrn_measurement_method       'phi scan'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_source         'INCOATEC Imus micro-focus source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_sigmaI/netI    0.0102
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            37305
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.71
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.283
_exptl_absorpt_correction_T_max  0.87
_exptl_absorpt_correction_T_min  0.85
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; (sheldrick, 2003)'
_exptl_crystal_colour            blue-green
_exptl_crystal_density_diffrn    1.738
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needles
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.986
_refine_diff_density_min         -0.976
_refine_diff_density_rms         0.117
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     207
_refine_ls_number_reflns         2327
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0644
_refine_ls_R_factor_gt           0.0584
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1152P)^2^+5.8064P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1747
_refine_ls_wR_factor_ref         0.1814
_reflns_number_gt                2042
_reflns_number_total             2327
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt01759e2.cif
_cod_data_source_block           ns16
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 7031914.cif.

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      Pnnm
_cod_database_code               7031914