Jmol-Application/C4/Symmetry-and-Point-Groups/Khasi

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Time Narration
00:01 Pdiang sngewbha sha kane ka tutorial halor Symmetry and Point Groups haka Jmol.
00:06 Ha kane ka tutorial, ngin pule ban:
00:08 Dro lain, kata, axis lyngba ki atom ha u molecule.
00:12 Spin bad rotate ïa u molecule shilynter jong u axis.
00:17 Dro ïaka plane lyngba ki atoms ha u molecule.
00:21 Bad pyni ïaka jingbuh kyrdan jong ki point group.
00:25 Ban bud ïa kane ka tutorial, phi dei ban don ka jing tip ïaka undergraduate Chemistry bad tip bha shaphang ka rukom treikam naka Jmol window.
00:35 Lada em, peit ïa ki tutorial ba kum kane kiba don haka website jong ngi.
00:39 Ban record ïa kane ka tutorial, nga pyndonkam ka:
00:42 Ubuntu Operating System version 14.04
00:46 Jmol version 12.2.32
00:50 Java version 7 bad * Mozilla Firefox browser 35.0.
00:57 Bunsien, ki symmetry haki molecule la batai ha ki kyntien jong ki symmetry elements kum:
01:03 Axis jong ka symmetry
01:05 Plane jong ka symmetry Center jong ka symmetry ter ter.
01:09 Ngin pyndonkam ka Jmol ban display kine ki symmetry element ha u molecule.
01:14 To ngin sdang ïa kane ka tutorial dakaba dro u C3 rotational axis lyngba ki atom haka model jong u methane.
01:22 Nga la plie lypa ïaka Jmol window.
01:25 Click haka modelkit menu ban ïoh ïaka model ball and stick jong u methane haka panel.
01:31 Label ïaki atom ha u methane molecule dakaba pyndonkam ïaka Display menu ha u tool bar.
01:37 Click ha ka Display, hiar sha Label bad click ha u jingjied Number.
01:43 Baroh ki atom ha u methane molecule lah ai number.
01:47 Ngi donkam ban thoh ki command ha ka console ban dro ïaki laiñ bad planes lyngba ki atom.
01:53 Ban plie ïa ka Console, click haka File menu.
01:57 Hiar sha ka Console bad click haka.
02:01 Ka Console window ka plie haka screen.
02:04 Ngin pyndonkam ïa ka kyntien draw haka command line ban dro ïaki laiñ bad plane.
02:10 Ka jingtip ba bniah halor ka Jmol script commands ka don hakane ka website.
02:15 Plie ïaka website ha uno uno u browser.
02:19 Ka web-page ka plie ryngkat bad ka list jong ki keyword bala pyndonkam na bynta ban thoh ki script command haka Jmol.
02:26 Hiar shapoh bad click haka kyntien draw haka list.
02:31 KA page ka plie bad ki jingbatai bniah shaphang ka draw keyword.
02:36 KA rukom pynbeit kyntien ba kyllum na bynta ka draw command la ai ha khlieh jong ka page.
02:42 La pynbud ïa kane da ka thup jingtip ba ïadei bad ka jingpyndonkam ïaka keyword.
02:47 To ngin leit phai biang sha ka Jmol panel.
02:51 Nga pyndonkam ka Kmag screen magnifier ban pyni heh iaka console window.
02:55 Ban dro u laiñ u ba thew ïa u C3 rotational axis,
02:59 type ïa ka command bala ai harum ha u dollar prompt, ha ka console.
03:04 U command line u sdang da ka kyntien “draw”, bad la pynbud pat da ka object ID.
03:10 U Number 250 ha u command line u thew ïaka jingjrong jong u laiñ.
03:15 La bud pat ïa kane da ka jaka shong jong u laiñ.
03:18 Hapoh ki bracket, atom number equal to 1 bad atom number equal to 2. Ñion Enter.
03:26 Khmih thuh haka panel. U laiñ ba ïaid lyngba ki atom 1 bad 2 la dro ha u model jong u methane.
03:33 Une u laiñ u long mynta kum u axis naka bynta ban pynshad.
03:37 Ngi lah ban dro palat ïa u wei u laiñ ha ka model bala ai.
03:41 Ban dro u C2 rotational axis, type haka console ïaka command bala ai harum.
03:47 Ha kane ka command, ki number haki bracket ba khun ki kdew ïa ki Cartesian coordinates naka bynta u line
03:54 bala pynbud daka command ban batai ïaka rong jong u laiñ. Ñion Enter.
03:59 Mynta haka panel, ngi don u methane ryngkat uC2 bad C3 rotational axes.
04:05 Ban rotate ha shi lynter u line 1, kata u C3 axis, type ïaka command harum:
04:12 rotate $line1 60 (rotate space dollar line1 space 60).
04:18 U number 60 u pyni ïa ka degree jong ka rotation. Ñion Enter.
04:24 Khmih thuh ïaka jingshad shilynter u line1.
04:27 Ban spin ïa u molecule shilynter u line1, type ïa ka command harum:
04:32 "spin $line1 180 60" (spin space dollar line1 space 180 space 60).
04:39 U number 180 u thew ïaka degrees jong ka rotation bad u 60 u thew ïaka speed jong ka rotation. Ñion Enter.
04:48 Haka panel, ngi iohi ia u model methane uba spin shilynter u line1, kata u C3 axis.
04:55 Kum ka assignment-Dro u laiñ uba pynï ia u C3 axis of symmetry, ha u model jong u ethane
05:02 bad spin ïa u model shilynter jong u C3 axis.
05:06 Phai biang sha ka Jmol panel.
05:08 Ngi lah ruh ban dro ïaka plane kaba ïaid lyngba ka shi kynhuh jong ki atom ha u molecule.
05:12 ban leh kumta, nyngkong delete ïa u laiñ ha u model methane dakaba type ïaka command ba harum.

"draw off" (draw space off). Ñion Enter.

05:24 Ban dro ïaka reflection plane kaba ïaid lyngba ki atom 1, 2 bad 3 jong u methane molecule:
05:31 type ïaka command harum haka console.
05:35 U Number 300 haka command u kdew ïaka size jong ka plane. Ñion Enter.
05:41 Khmih thuh ïaka reflection plane kaba iaid lyngba ki atom 1, 2 bad 3 ha u methane molecule.
05:49 Ban dro ka reflection plane ba –ar lyngba ki atom 1, 4 bad 5:
05:55 Haka console, ñion u up-arrow key bad edit ïaka command kumba harum.
06:01 Edit plane1 sha plane2 bad atomno2 sha 4 bad atomno3 sha 5.
06:12 Bad ruh, ban pynkylla ïaka rong jong ka plane, type ïaka command harum:
06:17 "color $plane2 blue" (semicolon color space dollar plane2 space blue). Ñion Enter.
06:24 Haka panel, ngi iohi ar tylli ki reflection planes ha u methane molecule.
06:29 Pyndonkam ka Jmol, ngi lah ruh ban pyni ka jingphiah kyrdan u point group naka bynta u methane kum harum.
06:36 To ngin pynkhuid noh ïaki plane bala dro ha u methane molecule, haka panel.
06:41 Haka console, type: draw off (draw space off). ñion Enter.
06:47 Ban pyni ïa baroh ki symmetry element ba lah na bynta u methane: type ïa ka command harum haka console.
06:54 "draw pointgroup" (draw space pointgroup). Ñion Enter.
06:59 Ngi iohi ïaki symmetry elements jong u methane bala pyni haka panel.
07:04 Ban shem ïa ka jingbuh kyrdan point group na bynta u methane, type ïaka command harum:

"calculate pointgroup" (calculate space pointgroup). Ñion Enter.

07:14 Td,ka point group jong u methane molecule, la pyni haka console.
07:20 Sa kawei ka jingpyni nuksa ba bha tam na bynta ka jingpyni ïa ka point group ka dei allene.
07:25 Ngi lah ban dro ïaka structure jong u allene, haka panel, pyndonkam da ka modelkit menu. Lane, ngi lah ruh ban download ïaka structure jong u allene na ka chemical structure database.
07:37 Lada phi long connect sha ka internet - click haka File menu, hiar sha Get Mol bad type “allene” haka text-box. Click ha OK.
07:48 Ban pyni lut ia baroh ki possible symmetry elements na bynta u allene:
07:52 ñion u up-arrow key ha u dollar prompt, haka console, tad ynda phi ïoh ïa kane ka command:
07:59 draw pointgroup . ñion Enter.
08:02 Khmih thuh ïaka panel. Ngi iohi ïa baroh ki possible symmetry elements na bynta u allene.
08:09 Ban ioh ïa ka jingphiah kyrdan point group na bynta u allene -
08:12 Sa shisien, haka console, ñion ïa u up-arrow key tad ynda phi ioh ïaka command "calculate pointgroup". Ñion Enter.
08:21 Ka point group classification na bynta u allene, kata u D2d, la pyni haka Console.
08:28 Kumjuh ruh, phi lah ban download ki molecules jong ka jingkwah jong phi bad kheiñ ïaka point group jong ki.
08:34 To ngin Batai lyngkot. Ha kane ka tutorial, ngi la pule:
08:38 Ban dro ki laiñ, kata, C2 bad C3 rotational axes lyngba ki atom ha u methane molecule.
08:45 Spin bad rotate u molecule shilynter u axis.
08:49 Dro ka reflection plane lyngba ki atom ha u methane molecule.
08:54 Bad pyni ïa ka point group classification pyndonkam ki nuksa jong u methane bad allene.
09:01 Kum ka assignment- Dro ka reflection plane haka model jong u dichloromethane
09:07 bad wad ïa ka point group classification na bynta u ammonia bad benzene.
09:12 Kane ka video Ka batai lyngkot ïaka Spoken Tutorial project.
09:15 Lada phim don ka bandwidth ba biang, phi lah ban download bad peit ïaka.
09:20 Ngi pynlong workshop dakaba pyndonkam ki spoken tutorials bad ai certificates. sngewbha thoh sha ngi.
09:27 Ka spoken-tutorial project la bei tyngka daka National Mission on Education Lyngba ka ICT, MHRD, Sorkar India.
09:33 ïa kane ka script la pynkylla sha ka ktien Khasi da I Hezekiah Lyngdoh na Shillong. Khublei ba phi la ïasnohlang.

Contributors and Content Editors

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