Low Temperature Solid-State Reactions of (NH4)2[MS4] (M = W, Mo) with [Cu(CH3CN)4](PF6) and CuBr in the Presence of Bis(diphenylphosphino)methane (dppm):  Crystal Structures of [MS4Cu4(dppm)4](PF6)2(M = W, Mo), [WS4Cu3(dppm)3]X (X = PF6, Br), [Cu3(dppm)3Br2]Br, [WS4Cu2(dppm)3], and [(n-Bu)4N][WS4Cu3Br2(dppm)2]

1998 ◽  
Vol 37 (24) ◽  
pp. 6308-6316 ◽  
Author(s):  
Jian-Ping Lang ◽  
Kazuyuki Tatsumi
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Crystal Structures ◽  
Solid State Reactions

Dimethyl-, Disilyl- and Digermylsulfide: Different Intermolecular Contacts in the Solid State

2004 ◽  
Vol 59 (6) ◽  
pp. 635-638 ◽  
Author(s):  
Norbert W. Mitzel ◽  
Udo Losehand
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Crystal Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Intermolecular Contacts

The compounds (H3C)2S, (H3Si)2S and (H3Ge)2S have been crystallised in situ on a diffractometer and their crystal structures determined by low-temperature X-ray diffraction. The molecules are present as monomers in the crystals. The aggregation of the molecules through secondary intermolecular contacts in the crystal is different: (H3C)2S is weakly associated into dimers by S···S contacts, whereas (H3Si)2S and (H3Ge)2S form Si···S and Ge···S contacts in an ice-analogous aggregation motif. Important geometry parameters are (H3C)2S: C-S 1.794(av) Å , C-S-C 99.2(1)°; (H3Si)2S: Si- S 2.143(1) Å , Si-S-Si 98.4°; (H3Ge)2S Ge-S 2.223(2) and 2.230(2) Å , Ge-S-Ge 98.2(1)◦.

Syntheses and Crystal Structures of the Solid Solution Sr4OBr2.89(2)Cl3.11(2) and the Elusive Ba2OBr2

2011 ◽  
Vol 66 (10) ◽  
pp. 1000-1004
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Single Crystals ◽  
Crystal Structures ◽  
Solid State Reactions ◽  
Molar Ratio ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Cell Parameters

Transparent and colorless single crystals of the compounds Sr4OBr2.89(2)Cl3.11(2) and Ba2OBr2 were obtained by solid-state reactions of SrCl2, SrBr2 and SrO (3 : 3 : 2 molar ratio) or by using an excess of BaO together with BaBr2 and Ba as a flux with the molar ratio 3 : 2 : 2, respectively. Ba2OBr2 crystals are isopointal to K2ZnO2 adopting the orthorhombic space group Ibam (no. 72, Z = 4) with the cell parameters a = 7247.44(10), b = 1297.76(20) and c = 657.43(10) pm. Sr4OBr2.89(2)Cl3.11(2) is isotypic to Ba4OCl6 (or isopointal to K6ZnO4) and crystallizes in the hexagonal space group P63mc (no. 186, Z = 2) with the cell parameters a = 982.20(4) and c = 750.41(7) pm.

Synthesis and Characterization of Metal Silicide/Silicon Carbide Composites by Low Temperature Solid-State Reactions

1993 ◽  
Vol 322 ◽  
Author(s):  
D. Zeng ◽  
M. J. Hampden-Smith ◽  
L.-M. Wang
Keyword(s):  
Silicon Carbide ◽  
Solid State ◽  
Thermal Treatment ◽  
Low Temperature ◽  
Thermal Annealing ◽  
Solid State Reactions ◽  
Synthesis And Characterization ◽  
Metal Silicide ◽  
Co Reduction

AbstractCo-reduction of mixtures of MoCl3(THF)3 and SiCls4 in THF using Li/C10H8 or both Li/C10Hs8 and LiBEt3H resulted in formation and separation of black powders which upon thermal annealing at temperatures ranging from 750°C to 1 100°C produced crystalline molybdenum silicide and silicon carbide composite. Co-reduction of mixtures of WCI4 and GeBr4 with LiBEt3H in THF formed W2C and elemental Ge which upon thermal treatment at 750°C for 4 hours generated a small amount of crystalline W5Ge3.

Synthesis, crystal structures and solid state reactions of zinc(ii) cyclobutane-1,1′-dicarboxylates containing 1,2-bis(pyrid-4 yl)ethylene

2019 ◽  
Vol 29 (6) ◽  
pp. 643-645
Author(s):  
Ivan E. Ushakov ◽  
Alexander S. Goloveshkin ◽  
Ekaterina N. Zorina-Tikhonova ◽  
Aleksandr S. Chistyakov ◽  
Aleksei A. Sidorov ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Solid State Reactions
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