Observation of a reversible isomorphous phase transition and an interplay of 'sigma-holes' and 'pi-holes' in Fmoc-Leu-psi[CH2-NCS]
Rumpa Pal; Govindappa Nagendra; M. Samarasimhareddy; Vommina V. Sureshbabu; Tayur N. Guru Row; Chem.Commun. 51 (2015) 933–; doi:10.1039/C4cc08751H

data_7116328
_publ_section_title
;
 Observation of a reversible isomorphous phase transition and an interplay
 of 'sigma-holes' and 'pi-holes' in Fmoc-Leu-psi[CH2-NCS]
;
_journal_name_full               Chem.Commun.
_journal_page_first              933
_journal_paper_doi               10.1039/C4cc08751H
_journal_volume                  51
_journal_year                    2015
_chemical_absolute_configuration unk
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C21 H22 N2 O2 S'
_chemical_formula_sum            'C21 H22 N2 O2 S'
_chemical_formula_weight         366.48
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2014-11-01 deposited with the CCDC.
2014-11-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.174(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   4.9807(2)
_cell_length_b                   15.9306(6)
_cell_length_c                   12.0456(5)
_cell_measurement_reflns_used    3702
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      2.6
_cell_volume                     943.54(7)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 18.4
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'four-circle diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            6646
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.24
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.189
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.981
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
Analytical numeric absorption correction using a multifaceted crystal
            model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.290
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             388
_exptl_crystal_size_max          0.257
_exptl_crystal_size_mid          0.239
_exptl_crystal_size_min          0.048
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H.D. (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.06(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         3702
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0537
_refine_ls_R_factor_gt           0.0444
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'W=1/[\S^2^(FO^2^)+(0.0315P)^2^] WHERE P=(FO^2^+2FC^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0812
_refine_ls_wR_factor_ref         0.0859
_reflns_number_gt                3223
_reflns_number_total             3702
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4cc08751h2.cif
_cod_data_source_block           shelx_1
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7116328