Binary compounds of silicon

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Experimental iron-silicon phase diagram

Binary compounds of silicon are

chemical compounds containing silicon and one other chemical element.[1] Technically the term silicide is reserved for any compounds containing silicon bonded to a more electropositive element. Binary silicon compounds can be grouped into several classes. Saltlike
silicides are formed with the electropositive s-block metals. Covalent silicides and silicon compounds occur with hydrogen and the elements in groups 10 to 17.

group 12 elements
. The general composition is MnSi or MSin with n ranging from 1 to 6 and M standing for metal. Examples are M5Si, M3Si (Cu, V, Cr, Mo, Mn, Fe, Pt, U), M2Si (Zr, Hf, Ta, Ir, Ru, Rh, Co, Ni, Ce), M3Si2 (Hf, Th, U), MSi (Ti, Zr, Hf, Fe, Ce, Th, Pu) and MSi2 (Ti, V, Nb, Ta, Cr, Mo, W, Re).

The

Kopp–Neumann law
applies; heat capacities are linear in the proportion of silicon:

As a general rule, nonstochiometry implies instability. These

semiconductors. Since degenerate semiconductors
exhibit some metallic properties, such as luster and electrical conductivity which decreases with temperature, some silicides classified as metals may be semiconductors.

Group 1

Silicides of

polymer network
.

Many cluster compounds of lithium silicides are known, such as Li13Si4, Li22Si5, Li7Si3 and Li12Si7.

aromatic.[4]

Other group 1 elements also form clusters: sodium silicide can be represented by NaSi, NaSi2 and Na11Si36

Zintl ions (Si4−
4, Si4−
9, Si2−
5) are known with group 1 counterions.[7]

Group 2

Silicides of

group 2 elements are also saltlike silicides except for beryllium whose phase diagram with silicon is a simple eutectic (1085 °C @ 60% by weight silicon).[8] Again there is variation in composition: magnesium silicide is represented by Mg2Si,[9] calcium silicide can be represented by Ca2Si, CaSi, CaSi2, Ca5Si3 and by Ca14Si19,[10] strontium silicide can be represented by Sr2Si, SrSi2 and Sr5Si3[11] and barium silicide can be represented by Ba2Si, BaSi2, Ba5Si3 and Ba3Si4.[12] Mg2Si, and its solid solutions with Mg2Ge and Mg2Sn, are good thermoelectric materials and their figure of merit
values are comparable with those of established materials.

Transition and inner transition metals

The

eutectic at 363 °C with 2.3% silicon by weight (18% atom percent) without mutual solubility in the solid state.[13] Silver forms another eutectic at 835 °C with 11% silicon by weight, again with negligible mutual solid state solubility. In group 12
all elements form a eutectic close to the metal melting point without mutual solid-state solubility: zinc at 419 °C and > 99 atom percent zinc and cadmium at 320 °C (< 99% Cd).

Commercially relevant intermetallics are group 6 molybdenum disilicide, a commercial ceramic mostly used as an heating element. Tungsten disilicide is also a commercially available ceramic with uses in microelectronics. Platinum silicide is a semiconductor material. Ferrosilicon is an iron alloy that also contains some calcium and aluminium.

MnSi, known as brownleeite, can be found in outer space. Several Mn silicides form a Nowotny phase. Nanowires based on silicon and manganese can be synthesised from Mn(CO)5SiCl3 forming nanowires based on Mn19Si33.[14] or grown on a silicon surface[15][16][17] MnSi1.73 was investigated as thermoelectric material[18] and as an optoelectronic thin film.[19] Single-crystal MnSi1.73 can form from a tin-lead melt[20]

In the frontiers of technological research, iron disilicide is becoming more and more relevant to optoelectronics, specially in its crystalline form β-FeSi2.[21][22] They are used as thin films or as nanoparticles, obtained by means of epitaxial growth on a silicon substrate.[23][24]

Atomic number Name Symbol Group Period
Block
 Phases
21 Scandium Sc 3 4 d Sc5Si3, ScSi, Sc2Si3,[25][26][27][28]
22 Titanium Ti 4 4 d Ti5Si3, TiSi, TiSi2, TiSi3, Ti6Si4[25]
23 Vanadium V 5 4 d V3Si, V5Si3, V6Si5, VSi2, V6Si5[25][29]
24 Chromium Cr 6 4 d Cr3Si, Cr5Si3, CrSi, CrSi2[25][30]
25 Manganese Mn 7 4 d MnSi, Mn9Si2, Mn3Si, Mn5Si3, Mn11Si9[25]
26 Iron Fe 8 4 d FeSi2, FeSi[31][32] Fe5Si3, Fe2Si, Fe3Si
27 Cobalt Co 9 4 d CoSi, CoSi2, Co2Si, Co2Si, Co3Si[33][34]
28 Nickel Ni 10 4 d Ni3Si, Ni31Si12, Ni2Si, Ni3Si2, NiSi (Nickel monosilicide), NiSi2[25][35]
29 Copper Cu 11 4 d Cu17Si3, Cu56Si11,Cu5Si, Cu33Si7, Cu4Si, Cu19Si6,Cu3Si,Cu87Si13[25][36]
30 Zinc Zn 12 4 d eutectic[37]
39 Yttrium Y 3 4 d Y5Si3, Y5Si4, YSi, Y3Si5,[38][39] YSi1.4.[40]
40 Zirconium Zr 4 5 d Zr5Si3, Zr5Si4, ZrSi, ZrSi2,[25] Zr3Si2, Zr2Si, Zr3Si[41]
41 Niobium Nb 5 5 d Nb5Si3, Nb4Si[25]
42 Molybdenum Mo 6 5 d Mo3Si, Mo5Si3, MoSi2[25]
43 Technetium Tc 7 5 d Tc4Si7 (proposed)[42]
44 Ruthenium Ru 8 5 d Ru2Si, Ru4Si3, RuSi, Ru2Si3[43][44]
45 Rhodium Rh 9 5 d RhSi,[45] Rh2Si, Rh5Si3, Rh3Si2, Rh20Si13[46]
46 Palladium Pd 10 5 d Pd5Si, Pd9Si2, Pd3Si, Pd2Si, PdSi[47]
47 Silver Ag 11 5 d eutectic[48]
48 Cadmium Cd 12 5 d eutectic[49]
57 Lanthanum La 6 f La5Si3, La3Si2, La5Si4, LaSi, LaSi2[50]
58 Cerium Ce 6 f Ce5Si3, Ce3Si2, Ce5Si4, CeSi,[51] Ce3Si5, CeSi2[52]
59 Praseodymium Pr 6 f Pr5Si3, Pr3Si2, Pr5Si4, PrSi, PrSi2[53]
60 Neodymium Nd 6 f Nd5Si3, Nd5Si4, Nd5Si3,NdSi, Nd3Si4, Nd2Si3, NdSix[54]
61 Promethium Pm 6 f
62 Samarium Sm 6 f Sm5Si4, Sm5Si3, SmSi, Sm3Si5, SmSi2[55]
63 Europium Eu 6 f
64 Gadolinium Gd 6 f Gd5Si3, Gd5Si4, GdSi, GdSi2[56]
65 Terbium Tb 6 f Si2Tb (terbium silicide), SiTb, Si4Tb5, Si3Tb5[57]
66 Dysprosium Dy 6 f Dy5Si5, DySi, DySi2[58]
67 Holmium Ho 6 f Ho5Si3,Ho5Si4,HoSi,Ho4Si5,HoSi2[59]
68 Erbium Er 6 f Er5Si3, Er5Si4, ErSi, ErSi2[60]
69 Thulium Tm 6 f
70 Ytterbium Yb 6 f Si1.8Yb,Si5Yb3,Si4Yb3, SiYb, Si4Yb5, Si3Yb5[61]
71 Lutetium Lu 3 6 d Lu5Si3[62]
72 Hafnium Hf 4 6 d Hf2Si, Hf3Si2, HfSi, Hf5Si4, HfSi2[25][63]
73 Tantalum Ta 5 6 d Ta9Si2, Ta3Si, Ta5Si3[25]
74 Tungsten W 6 6 d W5Si3, WSi2[64]
75 Rhenium Re 7 6 d Re2Si, ReSi, ReSi1.8[65] Re5Si3[25]
76 Osmium Os 8 6 d OsSi, Os2Si3, OsSi2[66]
77 Iridium Ir 9 6 d IrSi, Ir4Si5, Ir3Si4, Ir3Si5, IrSi3. Ir2Si3, Ir4Si7, IrSi2[67][68]
78 Platinum Pt 10 6 d Pt25Si7, Pt17Si8, Pt6Si5, Pt5Si2, Pt3Si, Pt2Si, PtSi[69]
79 Gold Au 11 6 d Eutectic diagram at link[70]
80 Mercury Hg 12 6 d eutectic[71]
89 Actinium Ac 7 f
90 Thorium Th 7 f Th3Si2, ThSi, Th3Si5, and ThSi2−x[72]
91 Protactinium Pa 7 f
92 Uranium U 7 f U3Si, U3Si2, USi, U3Si5, USi2−x, USi2 and USi3[73]
93 Neptunium Np 7 f NpSi3, Np3Si2, and NpSi[74]
94 Plutonium Pu 7 f Pu5Si3, Pu3Si2, PuSi, Pu3Si5 and PuSi2[75]
95 Americium Am 7 f AmSi, AmSi2[76]
96 Curium Cm 7 f CmSi, Cm2Si3, CmSi2[77]
97 Berkelium Bk 7 f
98 Californium Cf 7 f
99 Einsteinium Es 7 f
100 Fermium Fm 7 f
101 Mendelevium Md 7 f
102 Nobelium No 7 f
103 Lawrencium Lr 3 7 d
104 Rutherfordium Rf 4 7 d
105 Dubnium Db 5 7 d
106 Seaborgium Sg 6 7 d
107 Bohrium Bh 7 7 d
108 Hassium Hs 8 7 d
109 Meitnerium Mt 9 7 d
110 Darmstadtium Ds 10 7 d
111 Roentgenium Rg 11 7 d
112 Copernicium Cn 12 7 d

Group 13

In

group 13 boron (a metalloid) forms several binary crystalline silicon boride compounds: SiB3, SiB6, SiBn.[78] With aluminium, a post-transition metal, a eutectic is formed (577 °C @ 12.2 atom % Al) with maximum solubility of silicon in solid aluminium of 1.5%. Commercially relevant aluminium alloys containing silicon have at least element added.[79] Gallium, also a post-transition metal, forms a eutectic at 29 °C with 99.99% Ga without mutual solid-state solubility;[80] indium[81] and thallium[82]
behave similarly.

Group 14

Germanium silicide forms a solid solution and is again a commercially used semiconductor material.[83] The tin–silicon phase diagram is a eutectic[84] and the lead–silicon phase diagram shows a monotectic transition and a small eutectic transition but no solid solubility.[85]

Group 15

Silicon nitride (Si3N4) is a ceramic with many commercial high-temperature applications such as engine parts. It can be synthesized from the elements at temperatures between 1300 and 1400 °C. Three different crystallographic forms exist. Other binary silicon nitrogen compounds have been proposed (SiN, Si2N3, Si3N)[86] and other SiN compounds have been investigated at cryogenic temperatures (SiN2, Si(N2)2, SiNNSi).[87] Silicon tetraazide is an unstable compound that easily detonates.

The phase diagram with

annealing
an amorphous Si-P alloy.

The arsenic–silicon phase diagram measured at 40 Bar has two phases: SiAs and SiAs2.[91] The antimony–silicon system comprises a single eutectic close to the melting point of Sb.[92] The bismuth system is a monotectic.[93]

Group 16

In group 16

Silicon sulfide is also a chain compound. Cyclic SiS2 has been reported to exist in the gas phase.[95] The phase diagram of silicon with selenium has two phases: SiSe2 and SiSe.[96] Tellurium silicide is a semiconductor with formula TeSi2 or Te2Si3.[97]

Group 17

Binary silicon compounds in group 17 are stable compounds ranging from gaseous

polysilicon fluorides (SiF2)x and (SiF)x. The other halides form similar binary silicon compounds.[98]

The periodic table of the binary silicon compounds

SiH4 He
LiSi Be SiB3 SiC Si3N4 SiO2 SiF4 Ne
NaSi Mg2Si Al Si SiP
SiS2
SiCl4
 Ar
KSi CaSi2 ScSi TiSi V5Si3 Cr5Si3 MnSi FeSi CoSi NiSi Cu5Si Zn Ga
Si1−xGex
 SiAs SiSe2
SiBr4
 Kr
RbSi Sr2Si YSi ZrSi Nb5Si3 Mo5Si3 Tc RuSi RhSi PdSi Ag Cd In Sn Sb TeSi2 SiI4 Xe
CsSi Ba2Si LuSi HfSi Ta5Si3 W5Si3 ReSi2 OsSi IrSi PtSi Au Hg Tl Pb Bi Po At Rn
Fr Ra Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
↓
LaSi CeSi PrSi NdSi Pm SmSi EuSi GdSi TbSi DySi HoSi ErSi Tm YbSi
Ac ThSi Pa USi NpSi PuSi AmSi CmSi Bk Cf Es Fm Md No
Binary compounds of silicon
Covalent silicon compounds metallic silicides.
Ionic silicides Do not exist
Eutectic / monotectic / solid solution Unknown / Not assessed

References

  1. ^ Inorganic chemistry, Egon Wiberg, Nils Wiberg, Arnold Frederick Holleman
  2. ISSN 0197-0216
    .
  3. ^ Solid state ionics for batteries, Tsutomu Minami, Masahiro Tatsumisago
  4. PMID 21996453
    .
  5. S2CID 95520630
    .
  6. PMID 11229033
    .
  7. PMID 21455921
    .
  8. S2CID 96368677
    .
  9. ISSN 0197-0216
    .
  10. ISSN 0044-2313
    .
  11. ISSN 0197-0216
    .
  12. ISSN 0044-2313
    .
  13. ^ Constitution of Binary Alloys, second edition, Max Hansen and Kurt Anderko, McGraw-Hill Book Co., (NY NY 1958) p. 232 and EG Heath, J. of Electro Control, 11, 1961, pp 13-15 as summarized in Constitution of Binary Alloys, First Supplement, Elliott, McGraw-Hill Book Inc., (NY NY 1965) p. 103
  14. PMID 18983151
    .
  15. S2CID 35197350
    .
  16. ISSN 0734-2101
    .
  17. ISSN 0169-4332
    .
  18. S2CID 135674442
    .
  19. ISSN 0040-6090
    .
  20. S2CID 120204099
    .
  21. ISBN 3-527-40650-6
  22. ^ A silicon/iron-disilicide light-emitting diode operating at a wavelength of 1.5 μm. D. Leong, M. Harry, K. J. Reeson and K. P. Homewood. Nature 387, 686-688, 12 June 1997.
  23. PMID 9978811
    .
  24. ISSN 0021-8979
    .
  25. ^
    ISSN 0009-2665
    .
  26. ISSN 0925-8388
    .
  27. S2CID 94990578
    .
  28. S2CID 93869056
    .
  29. ISSN 0197-0216
    .
  30. S2CID 95591626
    .
  31. ISSN 0365-110X
    .
  32. PMID 10927390
    .
  33. ISSN 0044-2313
    .
  34. S2CID 94983677
    .
  35. ISSN 0197-0216
    .
  36. S2CID 98185051
    .
  37. ISSN 0197-0216
    .
  38. ISSN 0197-0216
    .
  39. ISSN 0044-2313
    .
  40. ISSN 0044-2313
    .
  41. ISSN 1054-9714
    .
  42. S2CID 94740968
    .
  43. ISSN 0925-8388
    .
  44. ISSN 1054-9714
    .
  45. ISSN 0365-110X
    .
  46. S2CID 96736788
    .
  47. S2CID 100418050
    .
  48. ISSN 0197-0216
    .
  49. ISSN 0197-0216
    .
  50. S2CID 98826249
    .
  51. ISSN 0925-8388
    .
  52. ISSN 0197-0216
    .
  53. S2CID 94765578
    .
  54. ISSN 0197-0216
    .
  55. ISSN 0197-0216
    .
  56. ISSN 0197-0216
    .
  57. ISSN 1054-9714
    .
  58. S2CID 91215617
    .
  59. S2CID 93224227
    .
  60. ISSN 1054-9714
    .
  61. S2CID 196735476
    .
  62. ISSN 0022-5088
    .
  63. ISSN 0197-0216
    .
  64. ^ Tungsten: Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds Lassner, Erik, Schubert, Wolf-Dieter 1999
  65. S2CID 95014982
    .
  66. S2CID 95791114
    .
  67. ISSN 0925-8388
    .
  68. ISSN 0365-110X
    .
  69. S2CID 198916454
    .
  70. ISSN 0197-0216
    .
  71. ISSN 1054-9714
    .
  72. ^ as summarized in Constitution of Binary Alloys, Second Supplement, Francis A. Shunk, McGraw-Hill Book Inc., (NY NY 1969) p. 681-82.
  73. ^ http://www.rertr.anl.gov/Web1999/PDF/18suripto.pdf [bare URL PDF]
  74. ISSN 0925-8388
    .
  75. ISSN 0022-3115
    .
  76. ISSN 0022-5088
    .
  77. ISSN 0022-5088
    .
  78. ISSN 0197-0216
    .
  79. ISSN 0197-0216
    .
  80. ISSN 0197-0216
    .
  81. ISSN 0197-0216
    .
  82. ISSN 0197-0216
    .
  83. ISSN 0197-0216
    .
  84. ISSN 0197-0216
    .
  85. ISSN 0197-0216
    .
  86. ISSN 0197-0216
    .
  87. ISSN 0276-7333
    .
  88. ISSN 0197-0216
    .
  89. ISSN 0734-2101
    .
  90. ISSN 0927-0256
    .
  91. ISSN 0197-0216
    .
  92. ISSN 0197-0216
    .
  93. ISSN 0197-0216
    .
  94. ISSN 0197-0216
    .
  95. PMID 22374622
    .
  96. ISSN 1054-9714
    .
  97. S2CID 135533614
    .
  98. ^ Inorganic chemistry, Egon Wiberg, Nils Wiberg, Arnold Frederick Holleman 2001
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