2-{3-Cyano-5,5-dimethyl-4-[4-(pyrrolidin-1-yl)buta-1,3-dienyl]-2,5-dihydrofuran-2-ylidene}malononitrile dichloromethane solvate
Gainsford, Graeme J.; Bhuiyan, M. Delower H.; Kay, Andrew J.; Robinson, Ward T.; Acta Crystallographica Section E 64 (2008) o1715–; doi:10.1107/S1600536808024719

data_2219384
_publ_section_title
;2-{3-Cyano-5,5-dimethyl-4-[4-(pyrrolidin-1-yl)buta-1,3-dienyl]-2,5-dihydrofuran-2-ylidene}malononitrile
 dichloromethane solvate
;
_journal_coeditor_code           LH2664
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1715
_journal_paper_doi               10.1107/S1600536808024719
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C18 H18 N4 O, C H2 Cl2'
_chemical_formula_moiety         'C18 H18 N4 O, C H2 Cl2'
_chemical_formula_sum            'C19 H20 Cl2 N4 O'
_chemical_formula_weight         391.29
_chemical_name_systematic
;
2-{3-Cyano-5,5-dimethyl-4-[4-(pyrrolidin-1-yl)buta-1,3-dienyl]-2,5-
dihydrofuran-2-ylidene}malononitrile dichloromethane solvate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 93.482(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8755(8)
_cell_length_b                   16.8913(17)
_cell_length_c                   16.6677(18)
_cell_measurement_reflns_used    5595
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      29.22
_cell_measurement_theta_min      2.41
_cell_volume                     1932.1(4)
_computing_cell_refinement       'SAINT (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction
;
RLATT (Bruker, 2004), SAINT (Bruker, 2005) and SADABS
(Sheldrick, 2003)
;
_computing_molecular_graphics
;
ORTEP-3 (Farrugia, 1997) and PLATON (Spek, 2003)
;
_computing_publication_material
;
SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2003)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.832
_diffrn_measured_fraction_theta_max 0.832
_diffrn_measurement_device_type
;
Bruker--Nonius APEXII CCD area-detector
;
_diffrn_measurement_method       '\f and \w'
_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  0.0994
_diffrn_reflns_av_sigmaI/netI    0.0845
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4280
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.00
_diffrn_reflns_theta_min         2.70
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.352
_exptl_absorpt_correction_T_max  0.955
_exptl_absorpt_correction_T_min  0.570
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Blessing, 1995)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.13
_refine_diff_density_max         1.357
_refine_diff_density_min         -0.474
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         4280
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.1505
_refine_ls_R_factor_gt           0.0954
_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^)+(0.1824P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2263
_refine_ls_wR_factor_ref         0.2698
_reflns_number_gt                2517
_reflns_number_total             4280
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh2664.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2219384
_cod_database_fobs_code          2219384