The crystal structure of yeatmanite
نویسنده
چکیده
The crystal structure of yeatmanite [MnsSb2]VI[Zn6Mn4(Si,.8Fe~:2)]IV028; PI, a = 5.443(3), b = 11.683(5), c = 9.134(4)A, 0< = 92.06(4), (3 = 101.19(4), 'Y = 76.34(4t, Z = I] from Franklin, New Jersey, has been refined to an R = 0.100 using 1881 reflections. The structure scheme proposed by Moore et al. [(1976); Neues Jahrb. Abh., 127, 47-61] was proved to be correct. The octahedral sheet consisting of 5Mn and 2Sb is sandwiched by the upper and the lower tetrahedral sheets consisting of Zn,Mn2Si2, respectively. Along the a-axis, there are two rows of Si tetrahedra, one of which is surrounded by 4Zn04 and 2Mn04, and the other by 3Zn04 and 3Mn04. A small portion of the latter is replaced by trivalent iron. The mean distances of M-O are as follows: Sb VI_O 2.q~ Mn(1)VI_O 2.24, Mn(2)VI_0 2.19, Mn(3)VI-0 2.22, Mn(4)VI-0 2.12, Mn(5) -0 2.08, Zn(l)IV -0 2.03. Zn(2)IV -0 1.95, Zn(3)IV-0 1.99, Si(1)IV -01.64 and Si(2)IV -0 1.66A. .
منابع مشابه
X-Ray Crystal Structure of [N, N'-bis(4-Methoxysalicylidene) -2, 3-Dimethylaminopropane] Copper(II) Ethanol Solvate
The crystal structure of the title Schiff base complex is obtained by single-crystal X-ray diffraction data.The solid state structure determination reveals that the coordination geometry around the copper(II) center istetrahedrally distorted square-planar. The crystal packing shows one dimensional infinite chains which arisesfrom the intermolecular interaction and stabilize the crystal packing.
متن کاملRedetermination of Crystal Structure of N,N'-bis (2-Hydroxybenzylidene)-2,2-Dimethyl-1,3-Propanediamine
The structure of N,N'-bis(2-hydroxybenzylidene)-2,2-dimethyl-1,3-propanediamine, C19H22N2O2, has been studied at low temperature (120K) by means of single-crystal X-ray diffraction. Solving the structure shows an orthorhombic unit cell, with P212121 space group, Z = 4, a = 6.1046 (4) Å, b = 15.8349 (11)</e...
متن کاملSYNTHESIS AND CRYSTAL STRUCTURE OF [Pph ] [WS (CUNCS) ] A. Taeb A. Beheshti and N.K. Javadi SYNTHESIS AND CRYSTAL STRUCTURE OF [Pph ] [WS (CUNCS) ]
The crystals of [WS (CuNCS) ] anion have been isolated from CH ,CI solution and examined by X-ray structural analysis as well as by IR spectroscopy. The unit cell is monoclinic with a= 14.3796(13), b= 18.039(1 I), c= 22.5956(23)& P= 96.053(8)', space group P2,/n (14), Z= 4. The crystal structure was refined by the least-squares calculations to a final R-value of 0.0398(Rw= 0.0443) for 2777 u...
متن کاملSYNTHESIS AND CRYSTAL STRUCTURE OF [PPh ] [WOS (CUNCS) ]
The reaction of [PPhJ, NOS,] with CuCl and KSCN (1 :3:3) in acetone produces the yell-ow crystals of [PPh,], [WOS,(CuNCS),]. The crystals are triclinic, space group P1(2), z=2, a=12.4823(7), b=12.9224(7), c=18.6395(10)?, ?=83.907(5), ?= 73.152(4), Y= 65.194(4)'. The crystal structure was determined by single crystal Xray diffraction methods (Mo-K ?) and refined by least-squares calculations ...
متن کاملPREPARATION AND CRYSTAL STRUCTURE OF CaCl .[OC(NH ) ]
Calcium dichloride tetra urea was prepared by the reaction of calcium chloride with urea in aqueous solution. The crystals are monoclinic, a= 7.633, b= 12.45 1, c= 8.118 ?,? = 113.17, Z = 4, space group P 2,/a. The crystal structure was determined by single crystal X-ray methods and refined to R= 0.041. The calcium atoms are coordinated to four oxygen atoms of urea and to two chloride ions....
متن کامل