A highly selective ratiometric chemosensor for Ni2+in a quinoxaline matrix
Goswami, Shyamaprosad; Chakraborty, Shampa; Adak, Monoj Kumar; Halder, Sandipan; Quah, Ching Kheng; Fun, Hoong-Kun; Pakhira, Bholanath; Sarkar, Sabyasachi; New J. Chem. 38 (2014) 6230–; doi:10.1039/C4NJ01498G

data_7054472
_publ_section_title
;
 A highly selective ratiometric chemosensor for Ni2+in a quinoxaline
 matrix
;
_journal_issue                   12
_journal_name_full               'New J. Chem.'
_journal_page_first              6230
_journal_paper_doi               10.1039/C4NJ01498G
_journal_volume                  38
_journal_year                    2014
_chemical_formula_moiety         'C9 H8 N4'
_chemical_formula_sum            'C9 H8 N4'
_chemical_formula_weight         172.19
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 103.900(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.3136(13)
_cell_length_b                   4.5404(8)
_cell_length_c                   12.823(2)
_cell_measurement_reflns_used    1890
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.35
_cell_measurement_theta_min      2.87
_cell_volume                     413.34(12)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PLATON (Spek, 2009)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Bruker SMART APEX II DUO CCD area-detector diffractometer 
;
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0397
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6873
_diffrn_reflns_theta_full        27.60
_diffrn_reflns_theta_max         27.60
_diffrn_reflns_theta_min         1.64
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9955
_exptl_absorpt_correction_T_min  0.9370
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2009)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             180
_exptl_crystal_size_max          0.729
_exptl_crystal_size_mid          0.102
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     126
_refine_ls_number_reflns         1072
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0374
_refine_ls_R_factor_gt           0.0331
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0422P)^2^+0.0603P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0826
_refine_ls_wR_factor_ref         0.0849
_reflns_number_gt                978
_reflns_number_total             1072
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c4nj01498g2.cif
_cod_data_source_block           mo_fs264_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 2827 2014-09-09 07:05:25Z andrius 

 Adding full bibliography for 7054472.cif.
;
_cod_original_cell_volume        413.35(13)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7054472