Synthesis, structural and spectroscopic characterization of new polychalcogenide complexes of indium and thallium, and their application as precursors to solid state materials. (Volumes I and II)

Miscellaneous · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7045945

Dhingra, S S

To study the coordination chemistry of group III-A metals with polychalcogenide ligands, the authors undertook a systematic investigation of this system and were able to isolate a number of structurally interesting indium and thallium polychalcogenides complexes. The polyselenide complexes exhibit the structural diversity in this system (Ph[sub 4]P)[sub 4] [In[sub 2](Se[sub 4])[sub 4](Se[sub 5])], (Pr[sub 4]N)[sub 4] [In[sub 2](Se[sub 4])[sub 4](Se[sub 5])], (Et[sub 4]N)[sub 4][In[sub 2](Se[sub 4])[sub 4](Se[sub 5])], (Pr[sub 4]N)[sub 2][In[sub 2]Se[sub 2](Se[sub 4])[sub 2]], [(Ph[sub 3]P)[sub 2]N][sub 2][In[sub 2]Se[sub 2](Se[sub 4])[sub 2]], (Et[sub 4]N)[sub 3][In[sub 3]Se[sub 3](Se[sub 4])[sub 3]], (Et[sub 4]N)[sub 3][Tl[sub 3]Se[sub 3]S(Se[sub 4])[sub 3]] and (Et[sub 4]N)[sub 5][NaIn[sub 6]Se[sub 6] (Se[sub 4])[sub 6]]. Similar structural diversity is also seen in the polysulfide complexes: (Ph[sub 4]P)[sub 2][In(S[sub 4])(S[sub 6])X] (X = Br, Cl) (Ph[sub 4]P)[sub 4][In[sub 2](S[sub 4])[sub 2](S[sub 6])[sub 2](S[sub 7])], (Ph[sub 4]P)[sub 2][In[sub 2]S(S[sub 5])(S[sub 4])[sub 1.5](S[sub 6])[sub 0.5]]; [alpha]-(Ph[sub 4]P)[sub 2][Tl[sub 2](S[sub 4])[sub 2]](S[sub 4])[sub 2], [beta]-(Ph[sub 4]P)[sub 2][Tl[sub 2](S[sub 4])[sub 2]][center dot]2DMF, [beta]-(Ph[sub 4]P)[sub 2](S[sub 4])[sub 2]].2DMF, [gamma]-(Ph[sub 4]P)[sub 2][T[sub 2](S[sub 4])[sub 2].DMF, (Et[sub 4]N)[sub 2][Tl[sub 2](S[sub 4])[sub 2]], (Me[sub 4]N)[sub 2][Tl[sub 2](S[sub 4])[sub 2]] and K[sub 0.68]Tl[sub 1.32]S[sub 5]. The compounds (Ph[sub 4]P)][Ga(Se[sub 6])[sub 2]], (Ph[sub 4]P)[In(Se[sub 6])[sub 2] and (Ph[sub 4]P)[Tl(Se[sub 6])[sub 2]], exhibit an unusual and open layered framework. The synthetic strategies, X-ray crystal structures and physicochemical properties of these new polychalcogenide complexes are illustrated. These complexes are excellent low temperature precursors for films of binary and ternary solid state compounds which are obtained as single phases.

• Research Organization: Michigan State Univ., East Lansing, MI (United States)
• OSTI ID: 7045945
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
CHALCOGENIDES
CHEMICAL PREPARATION
MOLECULAR STRUCTURE
INDIUM COMPLEXES
THALLIUM COMPLEXES
CHEMICAL PROPERTIES
GALLIUM SELENIDES
INDIUM SELENIDES
INDIUM SULFIDES
PHYSICAL PROPERTIES
THALLIUM SELENIDES
THALLIUM SULFIDES
COMPLEXES
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THALLIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties