合成テンゲル石の結晶構造の精密化 宮脇,律郎 松原,聰 国立科学博物館 0385244X 30 0 1 4 2004-12-22 2004-12-22 A Refinement of the Crystal Structure of Synthetic Tengerite-(Y) Miyawaki,Ritsuro Matsubara,Satoshi National Science Museum Bulletin of the National Science Museum. Series C, Geology & paleontology The crystal structure of synthetic equivalent of tengerite-(Y) has been refined in the anisotropic mode to R1=0.0253 for 469 independent reflections [I>2σ(I)] in an XRD data set for a single crystal of Y_2(CO_3)_3・2H_2O measured with CuKα radiation. The refined parameters for orthorhombic lattice with space group of Bb2_1m are a=6.0815(5), b=9.1596(9), c=15.0956(10)Å, V=840.89(12)Å^3, Z=4. The refinement confirms the previous analysis of crystal structure. The anisotropic displacement features of all non-hydrogen atoms have been clarified, and probable positions of hydrogen atoms of water molecule have been proposed. 宮脇,律郎 Miyawaki,Ritsuro Department of Geology and Paleontology, National Science Museum 松原,聰 Matsubara,Satoshi Department of Geology and Paleontology, National Science Museum