[{"data":1,"prerenderedAt":101},["ShallowReactive",2],{"cheatsheet-coordination-chemistry":3},{"sheet":4},{"sheetSlug":5,"topicSlugs":6,"primaryTopic":7,"title":8,"subtitle":9,"sections":10},"coordination-chemistry",[5],27,"Coordination Chemistry","Complex-ion charge, naming, coordination number, crystal-field theory, magnetism, and Beer's law.",[11,23,31,39,47,56,64,72,80,88],{"heading":12,"kind":13,"items":14},"Metal oxidation state","rules",[15],{"ref":16,"mode":19,"provenance":20,"text":21,"source_hash":22},{"type":17,"topic":7,"id":18,"field":17},"rule","CC-R001","transform","owned_workbook","Complex ion in [brackets], counter-ions outside. Complex charge balances the counter-ions; then metal charge + Σ(ligand charges) = complex charge.","1a7371e8e00ed326d1f07ba5f4c4627eb3140f5df0f5a48b3ac4e9c2444014c0",{"heading":24,"kind":13,"items":25},"Naming (IUPAC)",[26],{"ref":27,"mode":19,"provenance":20,"text":29,"source_hash":30},{"type":17,"topic":7,"id":28,"field":17},"CC-R002","Cation first. Ligands alphabetical before the metal (ignore di/tri prefixes for ordering). Use bis/tris if the ligand name already has di/tri (ethylenediamine → bis). Anionic complex → metal takes -ate.","2b3a7c030874cf82cf985ab2453abcdc4764f800300ff576bd2592eea922b54c",{"heading":32,"kind":13,"items":33},"Coordination number & geometry",[34],{"ref":35,"mode":19,"provenance":20,"text":37,"source_hash":38},{"type":17,"topic":7,"id":36,"field":17},"CC-R003","CN = total metal-ligand bonds (monodentate 1, bidentate like en/oxalate 2). CN 2 → linear; 4 → tetrahedral or square planar; 6 → octahedral.","46b6dd53254a6ca27c0e0505ccee7a25f84b718a7d991a8c3f646d09824cf8bc",{"heading":40,"kind":13,"items":41},"d-electron count",[42],{"ref":43,"mode":19,"provenance":20,"text":45,"source_hash":46},{"type":17,"topic":7,"id":44,"field":17},"CC-R004","Write the free-metal configuration, then remove electrons (4s before 3d) for the ion. Count d-electrons for CFT. Mn = [Ar]4s²3d⁵ → Mn³⁺ = [Ar]3d⁴.","a5ad7e639761f47ea8c04485ebff35ef94bd582f62e31c1a8c68057fa92f957e",{"heading":48,"kind":13,"items":49},"Crystal field: high vs low spin",[50],{"ref":51,"mode":19,"provenance":53,"text":54,"source_hash":55},{"type":17,"topic":7,"id":52,"field":17},"CC-R006","original","Octahedral d⁴-d⁷: compare Δ_o with pairing energy P. Δ_o \u003C P → high spin (fill e_g before pairing); Δ_o > P → low spin (pair in t2g first). d⁰-d³ and d⁸-d¹⁰ have only one filling.","c7a0e79e343e815d3615a4c5edbfa3520d67931252865abb257f0422afee621b",{"heading":57,"kind":13,"items":58},"Square-planar splitting",[59],{"ref":60,"mode":19,"provenance":53,"text":62,"source_hash":63},{"type":17,"topic":7,"id":61,"field":17},"CC-R013","Strong-field d⁸ ions (Pt²⁺, Pd²⁺, Ni²⁺) adopt square planar, with a distinct d-orbital splitting; the highest orbital (d_x²−y²) stays empty, giving a diamagnetic low-spin d⁸.","bba995b88cb718828da3562872d86003b04faa8894f3faf9cfd61f165c9ecc44",{"heading":65,"kind":13,"items":66},"Magnetism",[67],{"ref":68,"mode":19,"provenance":20,"text":70,"source_hash":71},{"type":17,"topic":7,"id":69,"field":17},"CC-R007","Any unpaired d-electrons → paramagnetic; all paired → diamagnetic. d³ octahedral (3 unpaired) and d⁸ octahedral (2 unpaired) are the same in either field strength.","7fdcae6688a29df761bb49c17f44ea941143da66e3770cde33c5ce51c8cc0576",{"heading":73,"kind":13,"items":74},"Isomerism",[75],{"ref":76,"mode":19,"provenance":53,"text":78,"source_hash":79},{"type":17,"topic":7,"id":77,"field":17},"CC-R012","Structural isomers (same formula, different connectivity): ionization and linkage. Stereoisomers (same connectivity, different arrangement): cis/trans (geometric) and non-superimposable optical isomers.","6966be3938c90ac7e54b56fa1973db08b2fb68625f0bb66308fb68d41af69ac5",{"heading":81,"kind":13,"items":82},"Beer's law",[83],{"ref":84,"mode":19,"provenance":20,"text":86,"source_hash":87},{"type":17,"topic":7,"id":85,"field":17},"CC-R008","A = εcℓ: A absorbance (unitless), ε molar extinction coefficient (M⁻¹cm⁻¹), c concentration (M), ℓ path length (cm). ε is wavelength-specific.","effcf9c66bdaa7963389c3b138a4a598c1a6771225b235fbbfd6700286605440",{"heading":89,"kind":13,"items":90},"Beer's law ratio & dilution",[91,96],{"ref":92,"mode":19,"provenance":20,"text":94,"source_hash":95},{"type":17,"topic":7,"id":93,"field":17},"CC-R009","Same compound, same ε and ℓ: A₁/A₂ = c₁/c₂, so c₂ = A₂c₁/A₁ (no need for ε).","a12d00a4b7be54d1b4fee1cbd543dbdeb2cbc48666e0c39daf63e95324b98b9d",{"ref":97,"mode":19,"provenance":20,"text":99,"source_hash":100},{"type":17,"topic":7,"id":98,"field":17},"CC-R010","For a diluted sample, apply M₁V₁ = M₂V₂ to get the diluted concentration BEFORE using A = εcℓ.","3baa6dc5dfd16b77fbc608c149ed0f11825135d5e40473d0cb21e1cf1afafe78",1787246033448]