Über das o-Natriumtelhirostannat(rV) Na₄SnTe₄ / On the o-Sodium-tellurostannate(IV), Na₄SnTe₄

Abstract

<jats:p>The new compound Na<jats:sub>4</jats:sub>SnTe<jats:sub>4</jats:sub> crystallizes in the orthorhombic system, space group P2<jats:sub>1</jats:sub>2<jats:sub>1</jats:sub>2<jats:sub>1</jats:sub> with lattice constants a = 865.8(5) pm, b = 884.0(5) pm, and c = 1526.9(8) pm. In the structure there are isolated SnTe<jats:sub>4</jats:sub><jats:sup>4</jats:sup>- -tetrahedra.</jats:p>

Syntheses, Vibrational Spectra, and Theoretical Studies of the Adamantanoid Sn4Ch104- (Ch = Se, Te) Anions: X-ray Crystal Structures of [18-Crown-6-K]4[Sn4Se10]·5en and [18-Crown-6-K]4[Sn4Te10]·3en·2THF

“…The Ch b −Sn−Ch b bond angles within the central Sn 4 Ch 6 core are 108.44(2)−113.98(2) o [107.74(2)−111.91(2)°] and are comparable to the Ch t −Sn−Ch b bond angles 105.64(2)−112.06(3)° [107.48(3)−110.77(3)°], a trend that is also observed in the Si 4 Te 10 4- 23 and Ge 4 Te 10 4- 24 anions. The Ch t -Sn−Ch b angles are close to the ideal tetrahedral angles observed in SnCh 4 4- , , and the Ch b −Sn−Ch b angles are similar to those observed in other systems containing Sn 4 Ch 6 cores: that is, [Cp(CO) 3 Mo] 4 Sn 4 Te 6 , 108.0(1)−114.4(1)°; (CH 3 ) 4 Sn 4 Se 6 , 110.13(4)−115.19(4)°; and [Cp(CO) 2 Fe] 4 Sn 4 Se 6 , 108.8(1)−111.8(1)° . The average Sn−Ch b −Sn bond angles, 108.3(3)° [106.8(8)°], are comparable to those observed in [Cp(CO) 3 Mo] 4 Sn 4 Te 6 (104.4(1)−108.1(1)°), (CH 3 ) 4 Sn 4 Se 6 (102.13(4)−103.75(4)°), and [Cp(CO) 2 Fe] 4 Sn 4 Se 6 (107.3(1)−109.0(1)°).…”

Multinuclear magnetic resonance study of the dilead trichalcogenide anions Pb2SnCh3-n2- (Ch = Se or Te), Pb2SSeTe2-, and M2Se32- (M = Sn and/or Pb) and the crystal structures of (2,2,2-crypt-K+)2Sn2Te32- and (2,2,2-crypt-K+)2Sn2Se32-

“…-821( 22) 78(10) C( 17) 4147( 29) 1861( 7) 3624( 21) 87( 10) C( 120) 5010( 31) 791( 8) 537( 23) 108( 12) C( 18) 3061( 26) 1847( 7) 4389( 24) 80( 10) 0( 121) 4121( 16) 877( 4) 1353( 14) 61( 5) C( 19) 748( 29) 1944( 7) 4541( 23) 89( 11) C( 122) 4651( 25) 888( 6) 2464( 20) 69( 9) C( 20) 106 (28) 1713( 7) 3742( 21) 75( 9) C( 123) 3780( 29) 960( 7) 3271( 24) 93( 11 -1437 (29) 1786( 8) 884( 22) 96( 11) C( 126) 938( 27) 568( 7) 4451( 22) 86( 10) 0(24)…”

Synthesis and Characterization of Ba2SnTe5: A New Zintl Phase Containing Unique One-Dimensional Chains of (SnTe3)2- and Dimeric Units of (Te2)2-

“…To date, several such structures have been found. Among these are Na 4 SnTe 4 and K 2 BaSnTe 4 8 with isolated SnTe 4 tetrahedra; K 6 Sn 2 Te 6 with dimers of fused tetrahedra (i.e., with direct Sn−Sn bond); Cs 4 Sn 2 Te 7 with dimers of corner-sharing tetrahedra; Tl 2 SnTe 3 , (Et 4 N) 4 Sn 2 Te 6 , and (Me 4 N) 4 Sn 2 Te 6 with dimers of edge-sharing tetrahedra; Rb 2 SnTe 5 , K 2 SnTe 5 , and Tl 2 SnTe 5 with 1-D chains of SnTe 4 tetrahedra interconnected by planar Te 5 ; K 2 HgSnTe 4 and (Et 4 N) 4 HgSnTe 4 27 with 1-D chains of Sn 0.5 Hg 0.5 Te 4 edge-sharing tetrahedra; Cs 2 SnTe 4 with 1-D chains of individual SnTe 4 tetrahedra linked via Te−Te bonds; and K 2 Ag 2 SnTe 4 , the first 3-D network formed by corner- and edge-sharing SnTe 4 and AgTe 4 tetrahedra. The title compound, Ba 2 SnTe 5 , is another example of 1-D material built from SnTe 4 tetrahedra, uniquely characterized by the presence of isolated dimers of tellurium.…”