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21. 发明授权

US6117360A Liquid crystal composition and liquid crystal display device 失效
标题翻译：液晶组成和液晶显示装置
公开(公告)号：US6117360A
公开(公告)日：2000-09-12
申请号：US698451
申请日：1996-08-15
申请人： Kazutoshi Miyazawa , Shuichi Matsui , Tomoyuki Kondo , Takashi Kato , Yasuko Sekiguchi , Etsuo Nakagawa
发明人： Kazutoshi Miyazawa , Shuichi Matsui , Tomoyuki Kondo , Takashi Kato , Yasuko Sekiguchi , Etsuo Nakagawa
IPC分类号： C07C17/12 , C07C17/26 , C07C17/35 , C07C17/354 , C07C25/18 , C07C43/225 , C07C45/00 , C09K19/30 , C09K19/12 , G02F1/133
CPC分类号： C07C17/12 , C07C17/263 , C07C17/35 , C07C17/354 , C07C25/18 , C07C43/225 , C07C45/004 , C09K19/3001 , C09K19/3028 , C07C2101/14
摘要： Liquid crystal compositions which have excellent miscibility at low temperatures, a properly large optical anisotropy, and a small threshold voltage while satisfying various characteristics required of liquid crystal compositions for active matrix mode liquid crystal display devices. The compositions contain, as a first component, at least one compound expressed by any one of formulas ##STR1## and as a second component, at least one compound expressed by any one of formulas ##STR2## wherein R represents a straight chain alkyl group having 1 to 10 carbon atoms, X represents CF.sub.3 or OCF.sub.3, X.sup.2 represents fluorine or OCF.sub.3, each Y represents, independently of each other, a hydrogen or fluorine atom, and m is 1 or 2.
摘要翻译：同时满足用于有源矩阵模式液晶显示装置的液晶组合物所需的各种特性的在低温下具有优异的混溶性，适当大的光学各向异性和小的阈值电压的液晶组合物。组合物含有作为第一组分的至少一种由下式表示的化合物和第二组分，至少一种由下式表示的化合物：其中R表示具有1-10个碳原子的直链烷基， X表示CF 3或OCF 3，X 2表示氟或OCF 3，Y各自独立地为氢或氟原子，m为1或2。

22. 发明授权

US5820784A Liquid crystal compostion and liquid crystal display device 失效
标题翻译：液晶组合液晶显示装置
公开(公告)号：US5820784A
公开(公告)日：1998-10-13
申请号：US606032
申请日：1996-02-22
申请人： Tomoyuki Kondo , Shuichi Matsui , Yasuyuki Koizumi , Koichi Shibata , Yasuhiro Haseba , Norihisa Hachiya , Etsuo Nakagawa , Kazutoshi Miyazawa
发明人： Tomoyuki Kondo , Shuichi Matsui , Yasuyuki Koizumi , Koichi Shibata , Yasuhiro Haseba , Norihisa Hachiya , Etsuo Nakagawa , Kazutoshi Miyazawa
IPC分类号： C07C69/773 , C09K19/20 , C09K19/30 , C09K19/42 , C09K19/46
CPC分类号： C09K19/3068 , C09K19/2007 , C09K19/3001 , C09K19/42 , C09K19/46
摘要： A liquid crystal composition is disclosed which contains, as the first component, at least one compound expressed by the formula (I-a) or (I-b) and contains, as the second component, at least one compound expressed by any one of the formulas (II-a) to (II-g), each of the formulas being recited in the specification. According to the present invention, a liquid crystal composition which is particularly excellent in compatibility in low temperatures, and has a suitably large .DELTA.n and a small V.sub.th can be provided while satisfying several characteristics required for liquid crystal compositions for AM-LCD.
摘要翻译：公开了一种液晶组合物，其含有作为第一组分的由式（Ia）或（Ib）表示的至少一种化合物，并且含有作为第二组分的至少一种式（II -a）至（II-g），每个式在本说明书中叙述。根据本发明，可以提供在AM-LCD液晶组合物中满足几种特性的情况下，可以提供在低温下相容性特别优异且具有适当大的ΔTAn和小Vth的液晶组合物。

23. 发明授权

US06231934B1 Alkenyl compound, liquid crystal composition, and liquid crystal display device 失效
标题翻译：烯基化合物，液晶组合物和液晶显示装置
公开(公告)号：US06231934B1
公开(公告)日：2001-05-15
申请号：US09155348
申请日：1998-09-28
申请人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Yasuko Sekiguchi , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Yasuko Sekiguchi , Etsuo Nakagawa
IPC分类号： C09K1934
CPC分类号： C07C43/225 , C07C43/176 , C07C43/188 , C07C69/753 , C07C69/76 , C09K19/04 , C09K19/16 , C09K19/3001 , C09K19/3048 , C09K19/3059 , C09K19/3402 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451 , C09K2019/3422 , Y10T428/10
摘要： The liquid crystalline compound is expressed by the general formula (1) Ra-A1-Z1-A2-Z2-A3-Z3-A4-Rb (1) wherein Ra represents an alkenyl group having 2 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms any methylene group (—CH2—) in the alkenylene or alkyl group may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but in no case —O— and/or —S— continues, and any hydrogen atom in Ra may be replaced by a halogen atom; Rb represents Ra, a halogen atom, or cyano group provided that at least one of Ra and Rb represents a group having double bond; A1, A2, A3, and A4 independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group any hydrogen atom on the ring may be replaced by fluorine atom or cyano group, cyclohexenediyl group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, or 1,3-dioxane-2,5-diyl group; and Z1, Z2, and Z3 independently represent an alkenylene group having 2 to 4 carbon atoms, —(CH2)2—, —COO—, —OCO—, —C≡C—, —CH2O—, —OCH2—, or single bond any hydrogen atom in the groups may be replaced by a halogen atom provided that at least one of Z1, Z2, and Z3 represents an alkenylene group having 2 to 4 carbon atoms.
摘要翻译：液晶化合物由通式（1）表示，其中R a表示具有2至20个碳原子的烯基或具有1至20个碳原子的烷基，亚烯基或烷基中的任何亚甲基（-CH 2 - ）可以被-O - ， - S - ， - CO - ， - CH = CH-或-C = C-取代，但不限于-O-和/或-S-，Ra中的任何氢原子被卤素原子取代; Rb表示Ra，卤素原子或氰基，Ra和Rb中的至少一个表示具有双键的基团; A1，A2，A3和A4独立地表示反式-1,4-亚环己基，1,4-亚苯基，环上的任何氢原子可以被氟原子或氰基取代，环己烯二基，吡啶-2,5- 二基，嘧啶-2,5-二基或1,3-二恶烷-2,5-二基; 且Z 1，Z 2和Z 3独立地表示具有2至4个碳原子的亚烯基， - （CH 2）2 - ， - COO - ， - OCO - ， - C = C - ， - CH 2 O - ， - OCH 2 - 键中的任何氢原子可以被卤素原子代替，条件是Z 1，Z 2和Z 3中的至少一个表示具有2至4个碳原子的亚烯基。

24. 发明授权

US06210761B1 Liquid crystal compounds exhibiting negative anisotropy of permittivity, liquid crystal compositions, and liquid crystal displays 有权
标题翻译：显示介电常数各向异性的液晶化合物，液晶组合物和液晶显示器
公开(公告)号：US06210761B1
公开(公告)日：2001-04-03
申请号：US09319008
申请日：1999-05-28
申请人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1912
CPC分类号： C09K19/12 , C07C25/18 , C07C43/225 , C09K19/14 , C09K19/20 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451 , Y10T428/10
摘要： The present invention is to provide liquid crystalline compounds which exhibit a negative dielectric anisotropy value, have an extremely high voltage holding ratio and a low threshold voltage, are remarkably small in their dependency on temperature, hardly exhibit smectic phase, and are excellent in miscibility with other liquid crystal materials; to provide liquid crystal compositions comprising the liquid crystalline compound; and to provide liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds are expressed by the following general formula (1) wherein Ra, Rb, Y1 to Y6, Z1 and Z2 are herein defined.
摘要翻译：本发明提供具有非常高的电压保持率和低阈值电压的具有负介电各向异性值的液晶化合物在温度依赖性方面非常小，几乎不显示出近晶相，并且与其他液晶材料; 以提供包含液晶化合物的液晶组合物; 并提供通过使用液晶组合物制造的液晶显示装置; 液晶化合物由以下通式（1）表示，其中本文定义了Ra，Rb，Y1至Y6，Z1和Z2。

25. 发明授权

US06210603B1 Fluorine-substituted benzene derivative, liquid-crystal composition, and liquid-crystal display element 有权
标题翻译：氟取代苯衍生物，液晶组合物和液晶显示元件
公开(公告)号：US06210603B1
公开(公告)日：2001-04-03
申请号：US09308983
申请日：1999-05-28
申请人： Tomoyuki Kondo , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Shuichi Matsui , Yasusuke Hisatsune , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Shuichi Matsui , Yasusuke Hisatsune , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1912
CPC分类号： C07C17/12 , C07C17/263 , C07C17/35 , C07C25/18 , C07C43/225 , C07C45/004 , C09K19/10 , C09K19/44 , C09K19/46 , C07C49/813
摘要： Liquid crystalline compounds are provided which have an extremely high voltage holding ratio, altered only slightly by change of temperature, and which have a low threshold voltage and a high &Dgr;n. Also provided are liquid crystal compositions containing the liquid crystalline compound; and liquid crystal display devices containing the liquid crystal composition. The liquid crystalline compound is expressed by the general formula (1) wherein R, Y1 to Y16, X and Z1 to Z3 are defined in claim 1.
摘要翻译：提供具有非常高的电压保持率的液晶化合物，仅通过温度变化稍微改变，并且具有低阈值电压和高DELTAn。还提供了含有液晶化合物的液晶组合物; 以及含有液晶组合物的液晶显示装置。液晶化合物由通式（1）表示，其中R 1，Y 1至Y 16，X和Z 1至Z 3如权利要求1中所定义。

26. 发明授权

US5948318A Liquid crystal composition and liquid crystal display device 失效
标题翻译：液晶组成和液晶显示装置
公开(公告)号：US5948318A
公开(公告)日：1999-09-07
申请号：US698456
申请日：1996-08-15
申请人： Kazutoshi Miyazawa , Shuichi Matsui , Tomoyuki Kondo , Takashi Kato , Yasuko Sekiguchi , Etsuo Nakagawa
发明人： Kazutoshi Miyazawa , Shuichi Matsui , Tomoyuki Kondo , Takashi Kato , Yasuko Sekiguchi , Etsuo Nakagawa
IPC分类号： C07C17/12 , C07C17/26 , C07C17/35 , C07C17/354 , C07C25/18 , C07C43/225 , C07C45/00 , C09K19/30 , C09K19/12 , C09K19/20 , G02F1/13
CPC分类号： C07C17/12 , C07C17/263 , C07C17/35 , C07C17/354 , C07C25/18 , C07C43/225 , C07C45/004 , C09K19/3001 , C09K19/3028 , C07C2101/14
摘要： Liquid crystal compositions which have a low threshold voltage, excellent miscibility at low temperatures, and a wide range of a nematic phase while satisfying various characteristics required of liquid crystal compositions for active matrix mode liquid crystal display devices. The compositions contain, as a first component, at least one compound expressed by any one of formulas ##STR1## and as a second component, at least one compound expressed by any one of formulas ##STR2## wherein each of the formulas, X represents CF.sub.3 or OCF.sub.3, each Y represents, independently of each other, a hydrogen or fluorine atom, m is 1 or 2, and n is an integer or 1 to 10.
摘要翻译：液晶组合物具有低阈值电压，低温下的良好混溶性和宽范围的向列相，同时满足用于有源矩阵模式液晶显示装置的液晶组合物所需的各种特性。所述组合物含有作为第一组分的至少一种由下式表示的化合物和作为第二组分的化合物，至少一种由下式表示的化合物，其中每个式X表示CF 3或OCF 3，每个Y表示彼此独立地为氢或氟原子，m为1或2，n为整数或1至10。

27. 发明授权

US06579577B2 Substituted benzene derivative, liquid crystal composition, and liquid crystal display element 有权
标题翻译：取代苯衍生物，液晶组合物和液晶显示元件
公开(公告)号：US06579577B2
公开(公告)日：2003-06-17
申请号：US09917271
申请日：2001-07-30
申请人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1912
CPC分类号： C07C17/12 , C07C17/263 , C07C17/35 , C07C25/18 , C07C43/225 , C09K19/14 , C09K19/20 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451 , Y10T428/10
摘要： There is provided a liquid crystalline compound having a high voltage holding ratio which has a very small degree of temperature dependence, a low threshold voltage which has a very small degree of temperature dependence, a high &Dgr;n, and excellent miscibility with other liquid crystal materials at low temperature; a liquid crystal composition; and a liquid crystal display element, and the liquid crystalline compound is a substituted benzene derivative represented by general formula (1), where, R represents a straight chain or branched alkyl group having 1 to 20 carbon atoms in which each of optional and nonadjacent methylene groups (—CH2—) may be substituted by an oxygen atom; X represents a halogen atom, —CF3, —CF2H, —CFH2, —OCF3 or —OCF2H; each of Z1 and Z2 independently represents —(CH2)2—, —(CH2)4—, —CH2O—, —OCH2— or a covalent bond, but Z1 and Z2 are not covalent bonds simultaneously; each of Y1, Y2, Y3, Y4, Y5, and Y6 independently represents H or F, but at least one of Y1, Y2, Y3, and Y4 represents F.
摘要翻译：提供了具有非常小的温度依赖性的高电压保持率的液晶化合物，具有非常小的温度依赖性的低阈值电压，高DELTAn和与其它液晶材料的优异的混溶性低温; 液晶组合物; 和液晶显示元件，液晶化合物是通式（1）表示的取代苯衍生物，其中，R表示碳原子数1〜20的直链或支链烷基，其中任选的和不相邻的亚甲基基团（-CH 2 - ）可以被氧原子取代; X表示卤素原子，-CF 3，-CF 2 H，-CFH 2，-OCF 3或-OCF 2 H; Z 1和Z 2各自独立地表示 - （CH 2）2 - ， - （CH 2）4 - ， - CH 2 O-，-OCH 2 - 或共价键，但Z 1和Z 2不同时为共价键; Y1，Y2，Y3，Y4，Y5和Y6各自独立地表示H或F，但Y1，Y2，Y3和Y4中的至少一个表示F.

28. 发明授权

US06174456B1 Liquid crystal compounds having substituted alkyl groups, liquid crystal composition and liquid crystal display element 失效
标题翻译：具有取代烷基的液晶化合物，液晶组合物和液晶显示元件
公开(公告)号：US06174456B1
公开(公告)日：2001-01-16
申请号：US08981145
申请日：1997-12-08
申请人： Tomoyuki Kondo , Kouichi Shibata , Shuichi Matsui , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Kouichi Shibata , Shuichi Matsui , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
IPC分类号： C09K1930
CPC分类号： C07C43/1742 , C07C17/16 , C07C22/04 , C07C22/08 , C07C25/18 , C07C25/24 , C09K19/04 , C09K19/30 , C09K19/3001 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451
摘要： The present invention provides liquid crystalline compounds having compatibility with the other liquid crystal materials and excellent stability, and having low viscosity and high transition temperature of the isotropic phase, liquid crystal compositions containing at least one kind of the liquid crystalline compounds, and liquid crystal display devices constituted by using the liquid crystal compositions. The liquid crystalline compounds are represented by the following formula: R—A1—Z1—A2—Z2—A3—Z3—A4—(CH2)m.X (1) wherein R indicates H or an alkyl group having 1 to 10 carbon atoms (one or more methylene group (—CH2—) in the alkyl group may be replaced by —O—, —S—, —CO—, —CH═CH— or —C≡C—, but —O— or —S— are not continuous), m indicates an integer of 1 to 10; X indicates F, Cl, Br, I or OH; A1, A2, A3 and A4, each independently, indicate a trans-1,4-cyclohexylene group, a 1,4-phenylene group in which one or more hydrogen atoms on the ring may be substituted by a fluorine atom, a cyclohexenylenediyl group, a pyrimidine-2,5-diyl group, a pyridine-2,5-diyl group or a 1,3-dioxane-2,5-diyl group; Z1, Z2 and Z3, each independently, indicate —(CH2)2— or a covalent bond, and at least two of Z1, Z2 and Z3 indicate covalent bonds.
摘要翻译：本发明提供了与其它液晶材料相容的液晶化合物，稳定性优异，各向同性相具有低粘度和高转变温度，含有至少一种液晶化合物的液晶组合物和液晶显示器通过使用液晶组合物构成的装置。液晶化合物由下式表示：其中R表示H或具有1〜10个碳原子的烷基（烷基中的一个或多个亚甲基（-CH 2 - ）可以被-O - ， - S - ， - CO - ， - CH = CH-或-C = C-，但-O-或-S-不连续），m表示1至10的整数; X表示F，Cl，Br，I或OH; A1，A2，A3和A4各自独立地表示反式-1,4-亚环己基，其中一个或多个氢原子可以被氟原子取代的1,4-亚苯基，环己烯二基，嘧啶-2,5-二基，吡啶-2,5-二基或1,3-二恶烷-2,5-二基; Z1，Z2和Z3各自独立地表示 - （CH2）2-或共价键，并且Z1，Z2和Z3中的至少两个表示共价键。

29. 发明授权

US6117361A Liquid crystal compound having fluorine-substituted 1,4-phenylene moiety, liquid crystal composition and liquid crystal display element 失效
标题翻译：具有氟取代的1,4-亚苯基部分的液晶化合物，液晶组合物和液晶显示元件
公开(公告)号：US6117361A
公开(公告)日：2000-09-12
申请号：US144082
申请日：1998-08-31
申请人： Koichi Shibata , Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
发明人： Koichi Shibata , Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
IPC分类号： C09K19/30 , C09K19/46 , C09K19/50 , C07C25/00 , C09K19/12
CPC分类号： C09K19/46 , C09K19/3001 , C09K19/3003 , C09K19/3028 , C09K19/50 , C09K2019/0444
摘要： A compound represented by the following general formula (1) is provided. This has broader temperature range of nematic phase, lower viscosity and higher miscibility with other liquid crystal compounds at low temperature than those of conventional liquid crystal compounds, and the compounds have high chemical stability. ##STR1## wherein H.sub.1 to H.sub.8 represent independently a hydrogen atom or a halogen atom, provided that at least one of them is a halogen atom; R.sub.1 represents a moiety which is an alkyl group having 2 to 20 carbon atoms provided that one or more methylene groups (--CH.sub.2 --) which are not successive in the alkyl group are replaced with an oxygen atom (--O--) in the form of ether; Y.sub.1 represents an alkyl group having 1 to 20 carbon atoms, and one or more methylene groups in Y.sub.1 independently may be replaced with an oxygen atom, a sulfur atom, a dihydroxysilyl group, a dimethylsililene group, --CH.dbd.CH-- or --C.tbd.C--; X.sub.1 to X.sub.3 represent independently a covalent bond, a 1,2-ethylene group or a 1,4-butylene group.
摘要翻译：提供由以下通式（1）表示的化合物。与常规液晶化合物相比，这种具有较高的向列相温度范围，较低的粘度和较低的其它液晶化合物的混溶性，并且该化合物具有高的化学稳定性。其中H1至H8独立地表示氢原子或卤素原子，条件是它们中的至少一个是卤素原子; R1表示一个具有2-20个碳原子的烷基的部分，条件是烷基中不连续的一个或多个亚甲基（-CH 2 - ）被氧原子（-O-）取代为醚; Y1表示碳原子数1〜20的烷基，Y1中的一个以上的亚甲基可以被氧原子，硫原子，二羟基甲硅烷基，二甲基硅烷基，-CH = CH-或-C C-; X1至X3独立地表示共价键，1,2-亚乙基或1,4-亚丁基。

30. 发明授权

US06596349B2 Terphenyl derivative, liquid crystal composition and liquid crystal display device 有权
标题翻译：三联苯衍生物，液晶组合物和液晶显示装置
公开(公告)号：US06596349B2
公开(公告)日：2003-07-22
申请号：US09836315
申请日：2001-04-18
申请人： Tomoyuki Kondou , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Tomoyuki Kondou , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1912
CPC分类号： C07C25/18 , C07C43/225 , C09K19/12 , Y10T428/10
摘要： The present invention provides liquid crystalline compounds having a high voltage holding ratio and a low threshold voltage, little variation of these properties with temperature change, high &Dgr;n, and good compatibility with other liquid crystal materials particularly under a low temperature; liquid crystal compositions containing these crystalline compounds; and liquid crystal display devices made using these liquid crystal compositions. The liquid crystalline compounds are terphenyl derivatives represented by general formula (1): wherein R represents a straight or branched alkyl group of 1-20 carbon atoms, and any methylene groups (—CH2—) not adjacent each other in each alkyl group may be replaced by oxygen atoms; X is a halogen atom, —OCF3, —OCF2H, —CF3, —CF2H or —CFH2; Y1, Y2, Y3, Y4, Y5 and Y6 independently represents H or F, but at least two of Y1, Y2, Y3 and Y4 represent F; and any atom constituting these compounds may be substituted by its isotope.
摘要翻译：本发明提供具有高电压保持率和低阈值电压的液晶化合物，这些性质与温度变化的变化小，DELTAn高，与其他液晶材料的相容性特别好，在低温下; 含有这些结晶化合物的液晶组合物; 以及使用这些液晶组合物制成的液晶显示装置。液晶化合物是由通式（1）表示的三联苯衍生物：其中R表示1-20个碳原子的直链或支链烷基，每个烷基中不相邻的任何亚甲基（-CH 2 - ）可以是被氧原子取代; X是卤素原子，-OCF 3，-OCF 2 H，-CF 3，-CF 2 H或-CFH 2; Y1，Y2，Y3，Y4，Y5和Y6独立地表示H或F，但Y1，Y2，Y3和Y4中的至少两个表示F; 并且构成这些化合物的任何原子可以被其同位素取代。

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