| 1 | Author
| D. Frerichs, Hk Müller-Buschbaum | Requires cookie* | | Title
| Vier verschiedene Koordinationspolyeder um Cu2+ im Oxid-Arsenat-Phosphat Cu0  | | | Abstract
| (Cu,M g)3(As1_xPJt:0 4)2 (x = 0,3) Four Different Coordination Polyhedra Around Copper in the Oxide-Arsenate-Phosphate C u0(C u,M g)3(A s,_xP,.04)2 (x = 0.3) Single crystals of CuO(Cu,Mg)3[(As0.7P0.3)O4]2 have been prepared by crystallization from melts. The compound crystallizes with triclinic symmetry, space group C '-P l, a = 6.372(4), b = 7.643(7), c = 8.175(5) A, a = 98.59(6), ß = 112.26(3), 7 = 99.03(3)°, Z = 2. CuO(Cu,Mg)3[(Aso)7Po 3)0 4]2 is isotypic to Cu4(P 0 4)20 . X-ray investigations show square planar C u 04 polygons, twisted tetragonal C u 0 5 pyramids, C u 05 bipyramids and elongated (Cu,M g)06 octahedra. | | |
Reference
| (Z. Naturforsch. 51b, 25—28 [1996]; eingegangen am 27. Juli 1995) | | |
Published
| 1996 | | |
Keywords
| Copper, Magnesium, Arsenate, Phosphate, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0025.pdf | | | Identifier
| ZNB-1996-51b-0025 | | | Volume
| 51 | |
2 | Author
| St Gallinat, Hk Müller-Buschbaum | Requires cookie* | | Title
| Two Examples of Partial and Total Defects in the B a«Ln2Mo4O i6-Type: BaCu0 41 ■o,59Pr2Mo4 0 16 and BaBYb2Mo4Ojg  | | | Abstract
| Single crystals of (I) BaCu0.4iPr2M o4O 16 and (II) BaYb2M o40 16 have been prepared by flux technique. Both compounds crystallize with m onoclinic symmetry, space group C2h-C 2 /c with (I): a = 5.352(11), b = 12.888(2), c = 19.399(4) A; ß = 90.89(3)°; (II): a = 5.181(7), b = 12.467(3), c -19.350(3) Ä , ß -91.93(2)°, Z = 4. The crystal structure is characterized by i [ B a M 0 12]-chains along [010]. In the first case the M positions are occupied by copper by about 41%, in the second case these positions remain com pletely unoccupied. With respect to the crystal chemistry of the reference compound Ba(Cu0.22Mg() 78)Nd2Mo4O 16 all substan ces of the composition BaLn2M o40 16 should be written as Ba»Ln2Mo40 16 indicating the holes in th e^ B a M O i^ -c h a in s by ■. | | |
Reference
| (Z. Naturforsch. 51b, 85—8 [1996]; eingegangen am 7. Juni 1995) | | |
Published
| 1996 | | |
Keywords
| Barium, Copper, Rare Earth, Molybdenum Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0085.pdf | | | Identifier
| ZNB-1996-51b-0085 | | | Volume
| 51 | |
3 | Author
| O. Sedello, Hk Müller-Buschbaum | Requires cookie* | | Title
| Ein Oxometallat mit eindimensional flächenverknüpften Oktaederketten Synthesis and Crystal Structure of (C u,Fe)363M o3O i2. An Oxom etallate Showing One-Dimensional Chains of Face Sharing Octahedra  | | | Abstract
| Single crystals of (C u ,F e)3-63M o30 12 have been prepared by crystallisation from melts. X-ray investigations lead to orthorhombic symmetry, space group D : 2-P 2 12121, a = 5.0952(8), b = 10.637(2), c = 17.881(3) A , Z = 4. (C u ,F e)363M o3O i2 is isotypic to Cu385M o30 12 or (C u,Z n)3 75M o30 12. M olybdenum shows tetrahedral coordination by oxygen. Cu+ and Fe2+ are probably distributed statistically over four different point positions. Interesting features of the crystal structure are one-dim ensional chains of face shared (C u ,F e)0 6 octahedra. S y n t h e s e u n d K r i s t a l l s t r u k t u r v o n (C u , F e) 3 ,63 M o 3 0 12. | | |
Reference
| (Z. Naturforsch. 51b, 90—9 [1996]; eingegangen am 20. Juni 1995) | | |
Published
| 1996 | | |
Keywords
| Copper, Iron, M olybdenum, Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0090.pdf | | | Identifier
| ZNB-1996-51b-0090 | | | Volume
| 51 | |
4 | Author
| Hk Müller-Buschbaum, St Gallinat | Requires cookie* | | Title
| Zur Kristallchemie von CuDyMo20 8 und CuYbMo20 8 On the Crystal Chemistry o f C uD yM o20 8 and CuYbM o2O g  | | | Abstract
| Single crystals o f (I) C uD yM o20 8 and (II) CuYbM o20 8 have been prepared by crystalli sation from melts. Both com pounds crystallize with orthorhombic symmetry, space group D 2 5h~Pbca with (I): a = 10.195(1), b = 9.721(2), c = 14.563(3); (II): a = 10.094(6), b = 9.628(9), c = 14.467(8) A , Z = 8. The crystal structure is characterized by a triangular C u 0 3-polygon, a square antiprismatic coordination around the Rare Earth ions and the typical M o 0 4 tetra hedra. | | |
Reference
| Z. Naturforsch. 51b, 240 (1996); eingegangen am 18. Mai 1995 | | |
Published
| 1996 | | |
Keywords
| Copper, Rare Earth M olybdenum Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0240.pdf | | | Identifier
| ZNB-1996-51b-0240 | | | Volume
| 51 | |
5 | Author
| O. Sedello, Hk Müller-Buschbaum | Requires cookie* | | Title
| On the Crystal Structure o f (C u ,M n )3 66M o30 12  | | | Abstract
| Single crystals o f (Cu,M n)3 66M o 30 12 have been prepared in sealed copper tubes. X-ray investiga tions lead to orthorhombic symmetry, space group Dih-Pnm a, a = 5.1541(9), b = 10.788(2), c = 18.114(3)) Ä , Z = 4. (Cu,M n)366M o 30 12 is iso typic to NaCo2 31M o 30 12 and (C u,C o)3 75M o 30 12 with split positions for two o f the metals. | | |
Reference
| Z. Naturforsch. 51b, 447—449 (1996); eingegangen am 31. August 1995 | | |
Published
| 1996 | | |
Keywords
| Copper, Manganese, Molybdenum Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0447_n.pdf | | | Identifier
| ZNB-1996-51b-0447_n | | | Volume
| 51 | |
6 | Author
| O. Sedello, Hk Müller-Buschbaum | Requires cookie* | | Title
| On the Crystal Structure of (Cu, M n )U M o 30 12  | | | Abstract
| Single crystals of (C u,M n)U M o30 12 have been prepared in sealed copper tubes. X-ray investiga tions lead to hexagonal symmetry, space group C|h-P63/m, a = 9.7895 (13), c = 6.202(1) A , z = 2. (C u ,M n)U M o30 12 is isotypic to CdThM o30 12. Calculations of the Coulomb terms o f lattice energy with respect to different oxidation states o f copper, molybdenum and uranium and the pre viously described pair of isotypic compounds of CdThM o30 12 to Na2ThRe60 24 are discussed. | | |
Reference
| Z. Naturforsch. 51b, 450—452 (1996); eingegangen am 5. September 1995 | | |
Published
| 1996 | | |
Keywords
| Copper, Manganese, Uranium Molybdenum Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0450_n.pdf | | | Identifier
| ZNB-1996-51b-0450_n | | | Volume
| 51 | |
7 | Author
| Hk Sedello, Müller-Buschbaum | Requires cookie* | | Title
| O  | | | Abstract
| Single crystals of BaCuTe03T e 0 4 have been prepared by crystallisation from melts. X-ray investigations lead to orthorhombic symmetry, space group C2v-Ama2, a = 5.4869(8), b = 15.412(1), c = 7.2066(4) A , Z = 4. This compound represents a new structure type, containing B aO 10, C u 0 5, T e 0 6 and T e 0 4 polyhedra. The lone pair (E) of TeIV completes the TeIV0 4 polyhedron to a trigonal T e 0 4E bipyramid. The Te to E distance is estimated by calculations o f the Coulomb terms of lattice energy to 1.43 A . | | |
Reference
| Z. Naturforsch. 51b, 465—468 (1996); eingegangen am 31. August 1995 | | |
Published
| 1996 | | |
Keywords
| Barium, Copper, Tellurium, Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0465.pdf | | | Identifier
| ZNB-1996-51b-0465 | | | Volume
| 51 | |
8 | Author
| V- | Requires cookie* | | Title
| Zwei monokline Kupfer-Oxovanadate des Magnesiums mit geordneter Metallverteilung: /w-Mg2CuV20 8 und MgCu2V20 8. Ein Beitrag zur Dimorphie von Mg2CuV2Os Two Monoclinic Copper Oxovanadates of Magnesium Showing Ordered Metal Distribution: m-Mg9CuV-,08 and MgCu  | | | Abstract
| Single crystals of ra-Mg2CuV20 8 (I) and MgCu2V20 8 (II) have been prepared by solid state reactions. The orange (I) and dark red (II) crystals show monoclinic symmetry, space group C2h -P2,/c, (I): a = 6.167(3), b = 8.172(5), c = 6.400(8) Ä, ß = 116.22(3)°, Z = 2; (II): a = 6.453(1), b = 8.342(2), c = 11.517(2) Ä, ß = 90.44(2), Z = 4. Both compounds show ordered metal distributions and vanadium in tetrahedral coordination by oxygen. (I) is characterized by elongated C u06 octahedra and (II) by trigonal C u 0 5 bipyramids. ra-Mg2CuV20 8 is the low temperature form of the formerly investigated orthorhombic o-Mg2CuV2Ö8. Calculations of the Coulomb parts of the lattice energy of the two crystal forms are discussed. | | |
Reference
| Z. Naturforsch. 51b, 817—821 (1996); eingegangen am 4. Dezember 1995 | | |
Published
| 1996 | | |
Keywords
| Magnesium, Copper, Vanadium Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-0817.pdf | | | Identifier
| ZNB-1996-51b-0817 | | | Volume
| 51 | |
9 | Author
| Z. Naturforsch | Requires cookie* | | Title
| Über ein Blei-Kupfer-Tellurat PbC^TeOy mit Cu2+ in deformiert tetragonal pyramidaler und tetraedrischer Sauerstoffkoordination  | | | Abstract
| On a Lead C opper Tellurate P b C u 3T e 0 7 Containing C u2+ in D istorted Square Pyram idal and Tetrahedral O xygen C oordination B. W edel, Hk. M üller-B uschbaum * PbCu3T e07 has been prepared from the element oxides by solid state reaction in air. Single crystal X-ray work led too orthorhombic symmetry, space group D^-Pnma, a = 10.488(1), b = 6.353(2), c = 8.813(2) A, Z = 4. Cu(1)0 5 square pyramids and Te06 octahedra are members of the anionic part of the crystal structure, Cu(2) atoms show tetrahedral coordination by oxygen. The C u (2)2+ and the Pb2+ cations are incorporated into a [Cu(l)2Te07] network. PbCu,Te07 can thus be viewed as a lead copper oxocuprate(II) tellurate. Calculations of the Coulomb terms of lattice energy reveal two possible positions for the lone pair of electrons at Pb'+. | | |
Reference
| Z. Naturforsch. 51b, 1587—1590 (1996); eingegangen am 21. Mai 1996 | | |
Published
| 1996 | | |
Keywords
| Lead, Copper, Tellurium, Oxide, Crystal Structure | | |
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| default:Reihe_B/51/ZNB-1996-51b-1587.pdf | | | Identifier
| ZNB-1996-51b-1587 | | | Volume
| 51 | |
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