Dear Nrutya Gopy, If you search the Crystallography Open Database (COD) at http://www.crystallography.net you will be able to find the two different crystalline forms of SnO plus ~80000 more cif files, all for free with a convenient search engine.
Just this time the two cifs follow. Best regards, Leo ------------------------------------------------------------ #------------------------------------------------------------------------------ #$Date$ #$Revision$ #$URL$ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided the American Mineralogist Crystal Structure Database, # http://rruff.geo.arizona.edu/AMS/amcsd.php # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_9012140 loop_ _publ_author_name 'Izumi, F.' _publ_section_title ; Pattern-fitting structure refinement of tin(II) oxide Locality: synthetic ; _journal_name_full 'Journal of Solid State Chemistry' _journal_page_first 381 _journal_page_last 385 _journal_volume 38 _journal_year 1981 _chemical_formula_sum 'O Sn' _chemical_name_mineral Romarchite _space_group_IT_number 129 _symmetry_space_group_name_Hall 'P 4ab 2ab -1ab' _symmetry_space_group_name_H-M 'P 4/n m m :1' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_length_a 3.7986 _cell_length_b 3.7986 _cell_length_c 4.8408 _cell_volume 69.850 _[local]_cod_data_source_file 11984.cif _[local]_cod_data_source_block global _[local]_cod_cif_authors_sg_H-M 'P 4/n m m' _[local]_cod_chemical_formula_sum_orig 'Sn O' loop_ _symmetry_equiv_pos_as_xyz x,y,z 1/2-y,1/2-x,z y,x,-z y,-x,-z 1/2-y,1/2+x,z x,-y,z 1/2-x,1/2+y,-z 1/2+x,1/2+y,-z -x,-y,z 1/2+y,1/2+x,z -y,-x,-z -y,x,-z 1/2+y,1/2-x,z -x,y,z 1/2+x,1/2-y,-z 1/2-x,1/2-y,-z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Sn 0.50000 0.00000 0.23690 0.00836 O 0.00000 0.00000 0.00000 0.03293 ------------------------------------------------------------- #------------------------------------------------------------------------------ #$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $ #$Revision: 19 $ #$URL: svn://cod.ibt.lt/cod/cif/1/1100020.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1100020 _chemical_name_systematic 'Tin (II) oxide - red modification' _chemical_formula_structural 'Sn O' _chemical_formula_sum 'O Sn' _publ_section_title ; The structure of the red modification of tin(II)oxide ; loop_ _publ_author_name 'Donaldson, J D' 'Moser, W' 'Simpson, W B' _journal_name_full 'Acta Crystallographica (1,1948-23,1967)' _journal_volume 16 _journal_year 1963 _journal_page_first A22 _journal_page_last A22 _cell_length_a 5. _cell_length_b 5.72 _cell_length_c 11.12 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 318.0 _cell_formula_units_Z 8 _symmetry_space_group_name_H-M 'C m c 21' _symmetry_Int_Tables_number 36 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,y,z' '-x,-y,1/2+z' 'x,-y,1/2+z' '1/2+x,1/2+y,z' '1/2-x,1/2+y,z' '1/2-x,1/2-y,1/2+z' '1/2+x,1/2-y,1/2+z' loop_ _atom_type_symbol _atom_type_oxidation_number Sn2+ 2.000 O2- -2.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Sn1 Sn2+ 4 a 0. 0. 0. 1. 0 d Sn2 Sn2+ 4 a 0. 0.441 0.254 1. 0 d O1 O2- 8 b 0.18 0.25 0.38 1. 0 d
