Synthesis of S,S-dimethylsulfiliminoazines

Filatov, I. E.; Kulikov, Yu. V.; Rusinov, Gennady L.; Pashkevich, K. I.

doi:10.1007/bf00470707

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…New borate compounds can be generated from a great diversity of borate crystal structures. The 70-year history of borate structure determinations has illustrated the unique chemistry of borates, characterized by the following distinguishing features (Becker, 2001;Filatov & Bubnova, 2000;Touboul et al, 2003):…”

Section: Introductionmentioning

confidence: 99%

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Yuan

Xue

2007

Acta Crystallogr Sect B

132

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The structural characteristics of all the borates available were analyzed using the Inorganic Crystal Structure Database. The fundamental building blocks (FBBs) in 841 borates were systematically classified into 6 types in terms of their topological structures. By including the polymerization of the FBBs in the borate structure, a novel systematic classification and an algebraic description of borates have been proposed. The current systematic borate classification, in which all the identical FBBs can be classified into the same type, is more reasonable and provides new insight into the structural differences between various borates. The current, simpler, algebraic description is more extensive and can reflect more of the structural information of borates. This thus provides an impetus for elucidating the topological features of borates. Our work also provides much useful information on the design and search for novel borates, which is also helpful to classify newly synthesized borates and to strengthen the understanding of the overall scope of borate structures.

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Section: Introductionmentioning

confidence: 99%

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Yuan

Xue

2007

Acta Crystallogr Sect B

132

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“…LiB 3 O 5 [29,30] and BiB 3 O 6 [31]. The γ-Na 2 B 4 O 7 modification was studied at low temperatures [32], α-Na 2 B 8 O 13 [33], α-CsB 5 O 8 [34], Bi 4 B 2 O 9 [34], and Na 3 (NO 3 )[B 6 O 10 ] [36] were studied at high temperatures in correlation with the results of hightemperature X-ray powder diffraction, the results for LiB 3 O 5 [29] and Li 2 B 4 O 7 [12] being provided in anharmonic approximation. High-temperature structural studies have revealed thermal rigidity of boron-oxygen groups and their mutual rotation around shared oxygen atoms according to the shares mechanism (monoclinic and triclinic crystals) [37] and hinge mechanism (crystals of any symmetry) [38].…”

Section: Introductionmentioning

confidence: 99%

Temperature‐dependent Changes of the Crystal Structure of Li₂B₄O₇

Sennova

Бубнова

Cordier

et al. 2008

Zeitschrift anorg allge chemie

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The crystal structure of Li 2 B 4 O 7 was studied by single crystal X-ray diffraction whilst the substance was cooled down from room temperature to Ϫ150°C. The title compound crystallizes in the tetragonal, non-centrosymmetric space group I 4 1 cd (no. 110), a ϭ 9.475(5) Å (r.t.), c ϭ 10.283(6) Å (r.t.), R values for seven different data sets vary from 2.6 to 2.9 %. Low-temperature single crystal examinations were combined with low-temperature powder X-ray diffraction experiments (Ϫ189 Ϫ ϩ27°C). The results are discussed in comparison with data earlier obtained at high temperatures (20 Ϫ 500°C). No phase transitions or abrupt changes of the crystal structure were observed. The coordination 2601 sphere of the lithium ions is that of a distorted tetrahedron and remains almost unchanged, although the coordination number of the lithium ions decreases slightly with rising temperature, similarly to what was found for LiB 3 O 5 . An expected rigidity of the boronoxygen groups was confirmed. The thermal deformations of the [B 4 O 7 ] 2Ϫ framework occur according to the hinge mechanism. This indicates that the LiO 4 chains change their winding on cooling, which leads to deformations along c.

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“…There are a vast number of structures existing in borate crystals due to the different combinations of [B' 3 ] and [B' 4 ] polyhedra. Generally, these groups prefer to maintain their configurations in various crystal structures, whereas the individual bond lengths show systematic variations depending on the location of bonds in a group (Filatov & Bubnova, 2000 [BO 4 ] tetrahedron, which can be interpreted by the BVS model (Pauling, 1929;Brown & Altermatt, 1985). Ideally, the formal bond valence of one B-O bond is equal to 1 valence unit (v.u.)…”

Section: B-o Bond-length Distributionmentioning

confidence: 99%

Bond analyses of borates from the Inorganic Crystal Structure Database

Xue

2006

Acta Crystallogr Sect B

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Various fundamental building blocks (FBBs) are observed in the crystallographic structures of oxoborates available in the Inorganic Crystal Structure Database, Version 1.3.3 (2004); the occurrence of borate groups with low complexity is dominant. Bond-valence parameters d(0) of B-O bonds in 758 oxoborates with various FBBs have been calculated using the bond-valence sum model. Some discrepancies in the d(0) values obviously occur if the detailed configurations of FBBs in borate crystals are considered; d(0) is sensitive to the chemical bonding structure of B atoms in the crystallographic framework. Moreover, d(0) values are affected by the existence of interstitial atoms and the substitution of other anionic groups. In addition, the d(0) parameters for B-N, B-S, B-P and B-F bonds are also calculated statistically. Some suitable d(0) data for various borate FBBs are recommended according to their particular configurations, especially for those with low complexity. On the basis of the proposed linear relationship between calculated nonlinear optical (NLO) coefficients of borates and the current d(0) values for various FBBs, it is found that the d(0) values may be regarded as a useful parameter for pre-investigating the NLO properties of borates, leading to an efficient structural evaluation and design of novel borates.

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Synthesis of S,S-dimethylsulfiliminoazines

Cited by 4 publications

References 2 publications

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Temperature‐dependent Changes of the Crystal Structure of Li₂B₄O₇

Bond analyses of borates from the Inorganic Crystal Structure Database

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Synthesis of S,S-dimethylsulfiliminoazines

Cited by 4 publications

References 2 publications

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Crystal chemistry of borates: the classification and algebraic description by topological type of fundamental building blocks

Temperature‐dependent Changes of the Crystal Structure of Li2B4O7

Bond analyses of borates from the Inorganic Crystal Structure Database

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Temperature‐dependent Changes of the Crystal Structure of Li₂B₄O₇